[android-developers] Re: device fingerprinting
Well, there's the IMEI, the IMSI, and the ANDROID_ID. Alas, the ANDROID_ID isn't unique (and is in fact identical on many Droid2 units). On Oct 30, 12:41 pm, bagelboy greg.do...@gmail.com wrote: Hello Devs, I'm working on an LVL implementation and I want to use as many different device identifiers as I can. I have considered using IMEI numbers but I've discarded that because a) it's intrusive and b) not all devices will have them. What might I use to fingerprint a phone for license verification? As an aside, how have your experiences with LVL been so far? Any pitfalls? I'm not asking for anyone to share their implementation details as that would give the hackers ideas. -BB -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: android + sqllite : problem with accessing database
Oddly, you can't pre-load a database. You have to create it on the
phone and load it up from a flat file or some other source.
On Oct 29, 6:13 am, Mad Troll trollheim.independ...@googlemail.com
wrote:
I created database in sql lite with commands:
sqlite.exe
CREATE TABLE android_metadata (locale TEXT DEFAULT 'en_US');
INSERT INTO android_metadata VALUES ('en_US');
CREATE TABLE myTable (ID int);
INSERT INTO myTable VALUES ('1');
.
etc.
i saved to file myDatabase.db
and i'm trying open it through android.
I open new project in eclipse
i put my database in assets folder
and i tried open my db using code:
SQLiteDatabase checkDB = null;
String DB_PATH = /data/data/my.andoid.app/databases/;
String DB_PATH = myDatabase.db;
try{
String myPath =DB_PATH + DB_NAME;
checkDB = SQLiteDatabase.openDatabase(myPath, null,
SQLiteDatabase.OPEN_READONLY);
}catch(SQLiteException e){
return e.getMessage();
}
And i can't open my database.
Could anyone help me and point me what i'm doing wrong?
regards
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[android-developers] Re: android + sqllite : problem with accessing database
I think the usual way is to put the SQLite DB file in raw, on the
phone create an empty DB and close it, then copy the raw copy over
this created version. I've never done it myself, though.
On Oct 29, 9:36 am, Mad Troll trollheim.independ...@googlemail.com
wrote:
so how i can do it?
i remember in one of examples i saw file with line structure:
data 1 | data2 | data 3
and application was created db from this file on phone
so you suggest i should convert my db into text file, and try open
text file im my app
to placed content of this file into db created by phone
but i cant create regular sql db and try to add it into project?
bugger
On 29 Oct, 13:35, DanH danhi...@ieee.org wrote:
Oddly, you can't pre-load a database. You have to create it on the
phone and load it up from a flat file or some other source.
On Oct 29, 6:13 am, Mad Troll trollheim.independ...@googlemail.com
wrote:
I created database in sql lite with commands:
sqlite.exe
CREATE TABLE android_metadata (locale TEXT DEFAULT 'en_US');
INSERT INTO android_metadata VALUES ('en_US');
CREATE TABLE myTable (ID int);
INSERT INTO myTable VALUES ('1');
.
etc.
i saved to file myDatabase.db
and i'm trying open it through android.
I open new project in eclipse
i put my database in assets folder
and i tried open my db using code:
SQLiteDatabase checkDB = null;
String DB_PATH = /data/data/my.andoid.app/databases/;
String DB_PATH = myDatabase.db;
try{
String myPath =DB_PATH + DB_NAME;
checkDB = SQLiteDatabase.openDatabase(myPath, null,
SQLiteDatabase.OPEN_READONLY);
}catch(SQLiteException e){
return e.getMessage();
}
And i can't open my database.
Could anyone help me and point me what i'm doing wrong?
regards
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[android-developers] Re: Java101 strings and ints
It should be pointed out that this is a basic Java question, not an
Android question. And more to the point it's a basic programming
question.
You'd be far better off learning more about programming on a desktop
system before digging into the ugliness that is Android (or any other
phone platform). It will be much less frustrating for you.
On Oct 29, 10:55 am, acr acr...@gmail.com wrote:
Hi all, Im new to android and java but moving along at full speed. My
lack of experience is making some elementary tasks too repetitive.
For example I want to be able to loop through the following snipit of
code.. the problem is I want i replace the number 1 in g1m0+=1;
so through each iteration g1m0 would become g2mo
for (Graphic grap : _toCompare) {
for(int i=1;i=7;i++){
if(grap.getCol()==i grap.getRow()==1){
g1m0+=1;
}else if(grap.getCol()==i grap.getRow()==2){
g1m0+=1;
g1m1+=1;
}else if(grap.getCol()==i grap.getRow()==3){ ..
I know this is a simple to the novices out there can you please give
me some insight to shorten up my code here..
Thanks a bunch!
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[android-developers] Re: How to pass objects around activities using A HashMap of WeakReferences to Objects?
You think the OP knows how to do a failover?? On Oct 28, 2:48 am, Doug beafd...@gmail.com wrote: I think the idea is that if you've just placed something in a (shared) HashMap with the value being a WeakReference to the object of interest, then immediately launch an activity to grab that value by id, the value you placed in the map will almost 100% be guaranteed be available by the time the activity's onCreate is called, but not permanently occupying space on the heap. Sure, it's not 100% safe to assume it exists, but a likely bet if the gc uses any kind of LRU mechanism to clean up a weakly referenced object. Yeah, that's the kind of code I like -- it'll probably work most of the time. There are cases when it's agreeable to make a small sacrifice in reliability for great increases in speed and convenience. And you may have heard of such a thing as a failover strategy. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: sqlite
A scheme I've seen used in other systems is to insert a dummy entry for the key, having it rejected if it's a duplicate. Ignore errors from that operation and then update by key. Depends on the specifics of the DB as to whether that will be more or less efficient than doing a query first. On Oct 17, 12:10 am, Hendrik Greving fourhend...@gmail.com wrote: I'd like to have a sqlite table with rows of 4 entries: a row id, a string and 2 integers and possibly more data later. I want the string to be unique. What's the easiest way to write an adapter that insert new rows with automatically replacing if the string already exists? Does DatabaseUtils.InsertHelper help? What is this for actually? How can I use CONFLICT_REPLACE? I could probably get it working by making a query and then delete and inserting or something like that, but I'm sure there is a better way. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Child Thread Blocking Problems
The problem is that you should never wait or block in the main thread. Your background thread needs to somehow notify the main thread that the connection is ready, and until then the main thread should be spinning (in the figurative sense) in its event loop, not sitting on a wait. On Oct 28, 1:08 pm, Hank hwang...@gmail.com wrote: Within my service I created a new thread that will try to establish a internet connection, and I want it to wait for the connection to be established before doing anything. But when I call wait() or use ConditionalVariable.block(), it blocks the whole application and causes ANR. Does anybody know why it does that even though I created a child thread for this task? and do you have any solutions for this problem? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Child Thread Blocking Problems
Lemme guess: You created a Thread but you never started it. On Oct 28, 1:42 pm, Hank hwang...@gmail.com wrote: In my code, I don't have wait or block in the main thread, but in the child thread. So supposedly only the child thread should wait or block. On Oct 28, 2:37 pm, DanH danhi...@ieee.org wrote: The problem is that you should never wait or block in the main thread. Your background thread needs to somehow notify the main thread that the connection is ready, and until then the main thread should be spinning (in the figurative sense) in its event loop, not sitting on a wait. On Oct 28, 1:08 pm, Hank hwang...@gmail.com wrote: Within my service I created a new thread that will try to establish a internet connection, and I want it to wait for the connection to be established before doing anything. But when I call wait() or use ConditionalVariable.block(), it blocks the whole application and causes ANR. Does anybody know why it does that even though I created a child thread for this task? and do you have any solutions for this problem? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Child Thread Blocking Problems
Assuming that post() or postDelayed() starts the Thread is even more popular. On Oct 28, 4:47 pm, fadden fad...@android.com wrote: On Oct 28, 12:35 pm, DanH danhi...@ieee.org wrote: Lemme guess: You created a Thread but you never started it. Calling run() instead of start() is tremendously popular. :-) It also causes a memory leak, because Threads get added to ThreadGroup when they're created and don't get removed until they stop executing. If they never start executing, they never get removed. (We're going to change this in a future release to use weak references, which isn't perfect but avoids this situation.) -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Is there anyway to pause a method in progress to wait for a button to be pressed?
So please someone tell me there is some way I can have my method pause until a button is pressed? You can't. Though if you really want to you can, by placing your main code in a secondary thread and having it communicate with the UI thread. It can send a message to the UI thread to display the current configuration, then wait for the UI thread to respond that a button has been pressed. But the problem you run into is that the Android OS may want to deep- six your thread to free up RAM if the app is backgrounded. Dunno how you handle that. On Oct 25, 8:49 pm, Silverbullet999 jv487...@gmail.com wrote: Basically I have created a blackjack game (first using just java) and it falls under an infinite while loop (this is so that the deck data is kept and everything works well. So first it deals the cards and then it needs to wait for either the hit button (which is displayed) or the stand button (which is displayed) to be clicked. I initially did this with a while loop that would keep checking if buttons were hit (basically when a button was hit, a static int would change and stuff would occur). However this just causes the droid to freeze up (thus far anyway) and also not refresh. So please someone tell me there is some way I can have my method pause until a button is pressed? I also need to know the proper way to use invalidate() so that my textviews, pictureviews and such can be updated as the methods change them. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: inner classes in android
First you need to understand that inner classes and subclasses are two distinctly different things. Inner classes are mostly just a convenience, simplifying coding without actually providing significant additional function. Subclasses, on the other hand, are the meat and potatoes of OO programming and provide power, function, and security advantages that are so substantial that few programmers ever grasp their full potential. On Oct 26, 9:27 pm, zeeshan mirza zeeshan.nabeel.mi...@gmail.com wrote: Frank thank you for your answer. I know some points when do we need to create inner classes like we cant extend more than one class so if we create inner classes we can extend more classes. Am i right? is there any other advantage of inner classes ? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Increase Ram Virtually
Wow! Virtual memory! Why, it seems only back in 1960 that was just a gleam in the eye of computer designers. And here we have it already! On Oct 27, 8:19 am, Sami sami...@gmail.com wrote: http://softsami.blogspot.com/2010/09/increase-ram-virtually.html -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Increase Ram Virtually
(Sami, virtual memory has been around for a looong time, even in Windoze. Generally there's no need/reason to muck with the Windows defaults, since most machines have enough RAM that you don't need VM to fudge having more, but simply use VM to swap inactive applications out -- just as occurs on Android. While you CAN generally use an enlarged VM address space to run an application that needs more RAM than you have installed, most applications are not designed to be VM friendly and will page horribly if you do. That is, performance will degrade by at least 10x, and often 100x or more.) On Oct 27, 8:19 am, Sami sami...@gmail.com wrote: http://softsami.blogspot.com/2010/09/increase-ram-virtually.html -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Developing using Eclipse for Android and Java desktop application
You can certainly write a desktop application that will use any crypto algorithm you can find the source for (or find a JAR for). Writing bare desktop Java is so easy there's no need to be constrained by a particluar desktop tool set. And somehow I find it hard to believe that javax.crypto would be irretrievably incompatible between the two versions. After all, it's necessary (and possible) for Android to be able to interchange with servers using encrypted data. More likely it's just a matter of getting both ends to use the same SPECIFIC algorithm, including not just the named algorithm (like DES) but also the nitty-gritty details of initialization vectors, salting, and the like. On Oct 26, 1:31 pm, Vikas1976 vikas.shah.1...@gmail.com wrote: Hi everyone, I am writing because I am writing an application that uses crypto to encode information in files that will be stored and read on an Android device, and I would like to develop a desktop SWT app to generate these files. It seems that the JRE6 library and the Android 1.6 library implement javax.crypto.cipher differently, and I end up with error messages when I try to decode strings in SWT encrypted on the Android device or vice versa. My question is whether you can force Eclipse to use the Android's javax.crypto.cipher in the SWT app, or use the JRE6 version in the Android app. Thanks! Vikas -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: inner classes in android
Android (and Java) would never have been built without subclasses. True, with a good suite of APIs you may never need to subclass anything, but that's simply because the people who designed the APIs were skillful in using the full power of the OO model. (Interfaces, by the way, are just a poor man's subclass -- very little conceptual difference.) On Oct 27, 5:20 pm, William Ferguson william.ferguson...@gmail.com wrote: Sorry Dan, I have to strongly disagree with 'Subclasses, on the other hand, are the meat and potatoes of OO programming. IMHO subclasses are typically the most abused part of OO programming and are often a cause of obscure programming bugs. The Android API is a good case in point, many of the widget classes require you to subclass them in order to provide additional functionality but don't give you access to the attributes you need. IMO one of the main failures of the Android API is that it makes too heavy use of implementation inheritance (subclassing) rather than interfaces. I rarely subclass. I find I can get a much cleaner abstraction using interfaces and composition. And when I do subclass I keep the responsibilities and methods locked down tight. Subclassing is a slippery slope that gets steep really fast. On Oct 28, 3:50 am, DanH danhi...@ieee.org wrote: First you need to understand that inner classes and subclasses are two distinctly different things. Inner classes are mostly just a convenience, simplifying coding without actually providing significant additional function. Subclasses, on the other hand, are the meat and potatoes of OO programming and provide power, function, and security advantages that are so substantial that few programmers ever grasp their full potential. On Oct 26, 9:27 pm, zeeshan mirza zeeshan.nabeel.mi...@gmail.com wrote: Frank thank you for your answer. I know some points when do we need to create inner classes like we cant extend more than one class so if we create inner classes we can extend more classes. Am i right? is there any other advantage of inner classes ? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: SQLiteException thrown during rawQuery()
Thew SQLiteException generally contains some very useful text. Might be worthwhile telling us what it was. On Oct 27, 6:40 pm, swgillan swgil...@gmail.com wrote: Hello, I got an SQLiteException when executing a rawQuery() function. I checked the API on this, and noticed that it is not documented that rawQuery would throw this (otherwise I would have put try/catch for this). Is this just something that was missed or is there something else in the documentation I need to be reading in regards handling to handling SQLite syntax errors? Thank you, Steven Gillan -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: inner classes in android
Interfaces were added to Java because they didn't want to (for reasons I fully appreciate) do multiple inheritance, which would have provided equivalent functionality (and then some). Interfaces are, IMO, very much worthwhile, but they do come at a significant performance cost vs pure virtual calls. They also provide nothing in the way of access control. On Oct 27, 7:26 pm, William Ferguson william.ferguson...@gmail.com wrote: (Interfaces, by the way, are just a poor man's subclass -- very little conceptual difference.) *choke* Uh OK. I'll leave it there. I hope that one day you will see the difference. On Oct 28, 8:32 am, DanH danhi...@ieee.org wrote: Android (and Java) would never have been built without subclasses. True, with a good suite of APIs you may never need to subclass anything, but that's simply because the people who designed the APIs were skillful in using the full power of the OO model. (Interfaces, by the way, are just a poor man's subclass -- very little conceptual difference.) On Oct 27, 5:20 pm, William Ferguson william.ferguson...@gmail.com wrote: Sorry Dan, I have to strongly disagree with 'Subclasses, on the other hand, are the meat and potatoes of OO programming. IMHO subclasses are typically the most abused part of OO programming and are often a cause of obscure programming bugs. The Android API is a good case in point, many of the widget classes require you to subclass them in order to provide additional functionality but don't give you access to the attributes you need. IMO one of the main failures of the Android API is that it makes too heavy use of implementation inheritance (subclassing) rather than interfaces. I rarely subclass. I find I can get a much cleaner abstraction using interfaces and composition. And when I do subclass I keep the responsibilities and methods locked down tight. Subclassing is a slippery slope that gets steep really fast. On Oct 28, 3:50 am, DanH danhi...@ieee.org wrote: First you need to understand that inner classes and subclasses are two distinctly different things. Inner classes are mostly just a convenience, simplifying coding without actually providing significant additional function. Subclasses, on the other hand, are the meat and potatoes of OO programming and provide power, function, and security advantages that are so substantial that few programmers ever grasp their full potential. On Oct 26, 9:27 pm, zeeshan mirza zeeshan.nabeel.mi...@gmail.com wrote: Frank thank you for your answer. I know some points when do we need to create inner classes like we cant extend more than one class so if we create inner classes we can extend more classes. Am i right? is there any other advantage of inner classes ? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: SQLiteException thrown during rawQuery()
Oh, I see -- you expect the Android documentation to be accurate!
never mind
On Oct 27, 7:20 pm, swgillan swgil...@gmail.com wrote:
Sorry, perhaps I wasn't clear:
It isn't the error that I am worried about, it is more that rawQuery
isn't documented as throwing a particular exception.
I can read my logcat and see plain as day that I had a syntax error in
my function.
I am trying to prevent something stupid like putting:
try{
rawQuery()}catch(bException e/b){
something bad happened to get here
}
instead it would be nice to catch the correct Exception in the first
place.
On Oct 27, 4:56 pm, DanH danhi...@ieee.org wrote:
Thew SQLiteException generally contains some very useful text. Might
be worthwhile telling us what it was.
On Oct 27, 6:40 pm, swgillan swgil...@gmail.com wrote:
Hello,
I got an SQLiteException when executing a rawQuery() function. I
checked the API on this, and noticed that it is not documented that
rawQuery would throw this (otherwise I would have put try/catch for
this). Is this just something that was missed or is there something
else in the documentation I need to be reading in regards handling to
handling SQLite syntax errors?
Thank you,
Steven Gillan
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[android-developers] Re: GK:How to give conditions in android XMLs
Are you sure they don't simply mean that they want different XML files for different environments/devices? There is a file suffix convention that lets you specify different files for different environments, to allow a single Android build to be targeted to several different devices simultaneously. On Oct 25, 10:38 pm, Jack Ganesh ganesh...@gmail.com wrote: Hi All., My appication is used across different devices. For all device (SPH- D800,MOTO-Droid. etc) i force to make use of one string.xml and one android manefiest file for my application. Can any please tell me how can i make the conditions inside the all xml file. Thanks in advance ! ! Thanks., Ganesh Kumar R. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Problem With Thread !
The JVM certainly could make use of the knowledge. As it is, there are some significant security holes, and the JVM must have some special rules (loopholes) so that inner classes will work. And the scheme used is slower and much more cumbersome than would be an implementation where the JVM is in on the secret and could implement the access checking and outer class access directly. On Oct 23, 2:57 pm, Bob Kerns r...@acm.org wrote: That's because the JVM doesn't NEED any other knowledge. The JVM doesn't define the language -- the compiler does. The JVM is the environment the compiler targets, but with a different compiler, you get, say, Scheme or AspectJ instead of Java. Taking your argument to the logical conclusion, nothing about C++ is real, because the hardware doesn't know about it. Hmmm Solipsism is fun, but not particularly useful. On Oct 23, 5:53 am, DanH danhi...@ieee.org wrote: Inner classes certainly exist Only as a fiction of javac. The JVM has no knowledge of them, other than the InnerClasses attribute that's really just for debugging and reflections. On Oct 22, 11:17 pm, Bob Kerns r...@acm.org wrote: There's always been Runnable, yes, but there hasn't always been the cultural emphasis on composition rather than derivation. In other words, I agree it was a mistake, but it was a mistake born of its time, and not one that would be as likely to be repeated today. Inner classes certainly exist -- they're just broken (only capture final variables). The sense of unreality to which you refer is just an implementation technique, and only visible if you peek below the covers of reality. :) That's true of most any bit of programming semantics you choose to examine that closely. On Oct 22, 5:15 pm, DanH danhi...@ieee.org wrote: But there's always been a Runnable, and it's no more difficult to subclass a Runnable than a Thread. Inner classes made it easier (if more obscure) to define your subclasses, but didn't change the basic nature of the beast. (In fact, in reality inner classes don't exist.) On Oct 22, 7:04 pm, Bob Kerns r...@acm.org wrote: -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: How to pass objects around activities using A HashMap of WeakReferences to Objects?
Don't know where you read that, but it sounds somewhat bogus. A WeakHashMap had weak keys -- when the key object no longer exists then the map entry is removed (eventually) by GC. If you use a Long as a key, and send the Long via intent extras, my understanding is that the Long is apt to be serialized/deserialized, meaning that the object received on the other end may not be the same Long. The problem with this is that the entry might be discarded before it is accessed. Now, you could use a HashMap of Long keys referencing WeakReferences, but that would be a different beast. Then the entries in the HashMap would persist, but the object referenced could evaporate if the original reference to it is lost on the sending side before the receiving side retrieves the object. In any event, the idea is that a reference to the (Weak)HashMap is separately passed to the other side, perhaps during initialization of a background thread. Then keys are passed via intents to identify individual objects in the HashMap. (Gotta admit that I don't quite see the point in this either.) On Oct 26, 5:11 pm, Anil anil.r...@gmail.com wrote: The FAQ mentions a method of passing objects around activities. (It is not clear to me): A HashMap of WeakReferences to Objects You can also use a HashMap of WeakReferences to Objects with Long keys. When an activity wants to pass an object to another activity, it simply puts the object in the map and sends the key (which is a unique Long based on a counter or time stamp) to the recipient activity via intent extras. The recipient activity retrieves the object using this key. Trying to pass a StringBuilder to another activity, // trailBuilder is a StringBuilder WeakHashMap wkmap = new WeakHashMapString,StringBuilder(); wkmap.put(trailBuilder, trailBuilder); alertIntent.putExtra(trailBundle,wkmap); // compile ERROR here Can anyone point me to an example of how this is done? thanks, Anil -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: How to pass objects around activities using A HashMap of WeakReferences to Objects?
(Anyway, your attempt to use the WeakHashMap is totally hosed. You need to study up more on basic Java programming before you attempt any more Android stuff.) On Oct 26, 5:11 pm, Anil anil.r...@gmail.com wrote: The FAQ mentions a method of passing objects around activities. (It is not clear to me): A HashMap of WeakReferences to Objects You can also use a HashMap of WeakReferences to Objects with Long keys. When an activity wants to pass an object to another activity, it simply puts the object in the map and sends the key (which is a unique Long based on a counter or time stamp) to the recipient activity via intent extras. The recipient activity retrieves the object using this key. Trying to pass a StringBuilder to another activity, // trailBuilder is a StringBuilder WeakHashMap wkmap = new WeakHashMapString,StringBuilder(); wkmap.put(trailBuilder, trailBuilder); alertIntent.putExtra(trailBundle,wkmap); // compile ERROR here Can anyone point me to an example of how this is done? thanks, Anil -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: inner classes in android
I'm afraid you need to go back to school -- this isn't an Android
question but a basic OO programming question.
On Oct 26, 5:01 pm, zeeshan mirza zeeshan.nabeel.mi...@gmail.com
wrote:
Hello Friends,
My Question is, why do we create inner classes or subclasses in
android. Like the following example
public class mainClass extends SomeClass implements SomeInterfaces{
Some variables declaration ...
public class subClass extends SomeOtherClass {
public SomeInterface someMethod() {
return mainClass.this;
}
}
}
Can we create this subClass as an individual class and later on use
its methods in mainClass? if not Why?
//Zeeshan
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[android-developers] Re: Problem With Thread !
Inner classes certainly exist Only as a fiction of javac. The JVM has no knowledge of them, other than the InnerClasses attribute that's really just for debugging and reflections. On Oct 22, 11:17 pm, Bob Kerns r...@acm.org wrote: There's always been Runnable, yes, but there hasn't always been the cultural emphasis on composition rather than derivation. In other words, I agree it was a mistake, but it was a mistake born of its time, and not one that would be as likely to be repeated today. Inner classes certainly exist -- they're just broken (only capture final variables). The sense of unreality to which you refer is just an implementation technique, and only visible if you peek below the covers of reality. :) That's true of most any bit of programming semantics you choose to examine that closely. On Oct 22, 5:15 pm, DanH danhi...@ieee.org wrote: But there's always been a Runnable, and it's no more difficult to subclass a Runnable than a Thread. Inner classes made it easier (if more obscure) to define your subclasses, but didn't change the basic nature of the beast. (In fact, in reality inner classes don't exist.) On Oct 22, 7:04 pm, Bob Kerns r...@acm.org wrote: -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Problem With Thread !
You're still just running in the UI thread. You need to start another thread somehow (there are several ways, that others can enumerate better than I can). On Oct 23, 4:39 am, MarcoCanali marco.can...@gmail.com wrote: Ok i Implements Runnable for put the service in Waith() i call Thread.sleep() in run() method of class that Implements Runnable and The Problem is the Same ; The stone don't hit the two Bird On 22 Ott, 23:32, DanH danhi...@ieee.org wrote: Thread implements Runnable mainly as a convenience. When you want to start a thread you need a Runnable to execute. You can supply a separate Runnable, but, since you're already creating a Thread, why not just make it a Runnable too, and kill two birds with one stone? On Oct 22, 3:41 pm, Kostya Vasilyev kmans...@gmail.com wrote: Prakash is right - the thread needs to be started. Now, btw, why does Thead implement Runnable in Java? Seems like a recipe for confusion. -- Kostya Vasilyev --http://kmansoft.wordpress.com 23.10.2010 0:33 пользователь DanH danhi...@ieee.org написал: No, he's posting it as a Runnable to a Handler, it looks like. Yeah, there's a lot of that going around, and it causes a lot of confusion. Stupid to use a Thread when a Runnable will do, but that's the way it is in some examples on the net, and those examples keep getting copied. And, of course, since it's not a separate thread (though the OP probably thinks it is), the sleep call holds up the UI. Not a nice thing to do. On Oct 22, 2:59 pm, TreKing treking...@gmail.com wrote: On Fri, Oct 22, 2010 at 8:02 AM, MarcoCanali marco.can...@gmail.com wrote: The Service Work ... On Fri, Oct 22, 2010 at 8:34 AM, Prakash Iyer thei...@gmail.com wrote: Don't you need to sta... TreKing http://sites.google.com/site/rezmobileapps/treking - Chicago transit tracking app for Android-powered devices -- You received this message because you are su... -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Problem With Thread !
Of course, I can treat a String as a boolean. Any class can be abused
by the ignorant.
But that's all beside the point. Thread isn't going to change. The
bizarre use of Thread as a Runnable, though (which appears to only
occur in Android), though, should be called out wherever it's seen.
Using the excuse that the class is too confusing is a bit of the
Android pot calling the Java kettle black.
On Oct 23, 5:00 am, Kostya Vasilyev kmans...@gmail.com wrote:
23.10.2010 4:04, Bob Kerns пишет: Because you're left with two dead birds
instead of one?
Or a ragout made out of two pigeons and marshmallows :) Perhaps pretty,
but inedible.
Runnable is an interface for packaging code into an object. There is
nothing about threading inherent in Runnable.
Having Thread implement Runnable makes using as a Runnable pretty
obvious - and wrong. The entire reason for Thread class's existence is
to be able to run code on a separate thread. That's clearly not the same
as packaging code into an object, which is what Runnable does.
So I'd say this is a case of inheritance for convenience of
implementation, which is usually considered to be a bad. But it's worse
than that, since treating Thread as a Runnable - as permitted by its
derivation - causes Thread to completely break.
Could have been something like this:
class Thread /* does not implement Runnable */
{
// supply runnable to do background work
Thread(Runnable r) {
this.runnable = r;
}
// override worker() to do background work
Thread() {
}
void start ()
{
// fork, call worker()
}
void worker() {
if (this.runnable != null) {
this.runnable.run();}
else {
throw new IllegalStateException(Either use Thread(Runnable) or override
worker());
}
}
}
--
Kostya Vasilyev -- WiFi Manager + pretty widget
--http://kmansoft.wordpress.com
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[android-developers] Re: Problem With Thread !
(The problem is that several of the authoritative examples of using
postDelayed that you'll find on the net make this error, and lead many
astray.)
On Oct 23, 5:00 am, Kostya Vasilyev kmans...@gmail.com wrote:
23.10.2010 4:04, Bob Kerns пишет: Because you're left with two dead birds
instead of one?
Or a ragout made out of two pigeons and marshmallows :) Perhaps pretty,
but inedible.
Runnable is an interface for packaging code into an object. There is
nothing about threading inherent in Runnable.
Having Thread implement Runnable makes using as a Runnable pretty
obvious - and wrong. The entire reason for Thread class's existence is
to be able to run code on a separate thread. That's clearly not the same
as packaging code into an object, which is what Runnable does.
So I'd say this is a case of inheritance for convenience of
implementation, which is usually considered to be a bad. But it's worse
than that, since treating Thread as a Runnable - as permitted by its
derivation - causes Thread to completely break.
Could have been something like this:
class Thread /* does not implement Runnable */
{
// supply runnable to do background work
Thread(Runnable r) {
this.runnable = r;
}
// override worker() to do background work
Thread() {
}
void start ()
{
// fork, call worker()
}
void worker() {
if (this.runnable != null) {
this.runnable.run();}
else {
throw new IllegalStateException(Either use Thread(Runnable) or override
worker());
}
}
}
--
Kostya Vasilyev -- WiFi Manager + pretty widget
--http://kmansoft.wordpress.com
--
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[android-developers] Re: Issue with Catch Handler
I vaguely recall this being mentioned as a feature of the emulator. Seems odd, though, since it should be easy to fix and it makes debugging that much harder. On Oct 21, 9:58 pm, John Moline molinesys...@gmail.com wrote: Thanks Brad. I did narrow it down to my emulator. If I run the same process without using the emulator, it runs fine. It looks like some sort of permissions or framework issue within the emulator. On Thu, Oct 21, 2010 at 7:22 PM, Brad Gies rbg...@gmail.com wrote: I have had the same problem... It's not the Exception that is null, it's that getMessage() returns null. In some catch blocks (I think mainly or only to do with HTTPClient, but it may happen also with JSON Exceptions... I can't remember) calling e.getMessage() returns null since I updated my SDK to 2.2, and it caused major issues because I normally wrote that to a log file, which meant that my catch block was creating an exception Would love to know the reason... And would be even better if it got fixed. In the meantime, I'm doing this in my catch block if I use the message for ANYTHING: String message = ex.getMessage(); if (message == null) message = null; Then I write the message... It's a major pain... I don't have an answer for you either... just letting you know it's not just you :) Sincerely, Brad Gies --- Bistro Bot - Bistro Blurb http://bgies.com http://nocrappyapps.com http://bistroblurb.com http://forcethetruth.com http://ihottonight.com --- Everything in moderation, including abstinence (paraphrased) Every person is born with a brain... Those who use it well are the successful happy ones - Brad Gies Adversity can make or break you... It's your choice... Choose wisely - Brad Gies Never doubt that a small group of thoughtful, committed people can change the world. Indeed. It is the only thing that ever has - Margaret Mead On 19/10/2010 9:35 PM, Johnny Molina wrote: Hello, I have recently hit a snag using the Android plugin to Eclipse. For some reason, ALL of my errors being thrown don't initialize and show me the error. Has anyone ever seen this issue before and if so, what did you do to correct it? In particular, I am seeing it when I try to invoke the HTTPGet in a HTTPClient object. If I have no connectivity, then I should get an error. The Catch block does fire when this occurs...however, when I check my general Exception object, the object is NULL (NULL Pointer). Why would this happen if the catch is grabbing the exception? My exceptions used to be workingand I was able to see the stack trace. However, I can no longer see any stack trace regardless of the Exception class I am using. Can someone please help me understand what the heck is wrong with Eclipse, Android, or both? Is there something I am missing on the configuration side?...is this a bug? Mind you, I have already used Stack Overflow for this question. It has been viewed 40 times but no answer yet. I hope anybody on here can help me understand why this is occurring. Thanks in advance, John -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Problem With Thread !
No, he's posting it as a Runnable to a Handler, it looks like. Yeah, there's a lot of that going around, and it causes a lot of confusion. Stupid to use a Thread when a Runnable will do, but that's the way it is in some examples on the net, and those examples keep getting copied. And, of course, since it's not a separate thread (though the OP probably thinks it is), the sleep call holds up the UI. Not a nice thing to do. On Oct 22, 2:59 pm, TreKing treking...@gmail.com wrote: On Fri, Oct 22, 2010 at 8:02 AM, MarcoCanali marco.can...@gmail.com wrote: The Service Work in Right mode but the other activity of application don't respond to command ...from the sleep command add !! None of this makes any sense to me. Someone have an Idea of problem with Thread process, the sleep method intact the Application main core i think !!! None of this makes any sense to me either. On Fri, Oct 22, 2010 at 8:34 AM, Prakash Iyer thei...@gmail.com wrote: Don't you need to start the thread? No, he's posting it as a Runnable to a Handler, it looks like. - TreKing http://sites.google.com/site/rezmobileapps/treking - Chicago transit tracking app for Android-powered devices -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Problem With Thread !
Thread implements Runnable mainly as a convenience. When you want to start a thread you need a Runnable to execute. You can supply a separate Runnable, but, since you're already creating a Thread, why not just make it a Runnable too, and kill two birds with one stone? On Oct 22, 3:41 pm, Kostya Vasilyev kmans...@gmail.com wrote: Prakash is right - the thread needs to be started. Now, btw, why does Thead implement Runnable in Java? Seems like a recipe for confusion. -- Kostya Vasilyev --http://kmansoft.wordpress.com 23.10.2010 0:33 пользователь DanH danhi...@ieee.org написал: No, he's posting it as a Runnable to a Handler, it looks like. Yeah, there's a lot of that going around, and it causes a lot of confusion. Stupid to use a Thread when a Runnable will do, but that's the way it is in some examples on the net, and those examples keep getting copied. And, of course, since it's not a separate thread (though the OP probably thinks it is), the sleep call holds up the UI. Not a nice thing to do. On Oct 22, 2:59 pm, TreKing treking...@gmail.com wrote: On Fri, Oct 22, 2010 at 8:02 AM, MarcoCanali marco.can...@gmail.com wrote: The Service Work ... On Fri, Oct 22, 2010 at 8:34 AM, Prakash Iyer thei...@gmail.com wrote: Don't you need to sta... TreKing http://sites.google.com/site/rezmobileapps/treking - Chicago transit tracking app for Android-powered devices -- You received this message because you are su... -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Problem With Thread !
But there's always been a Runnable, and it's no more difficult to subclass a Runnable than a Thread. Inner classes made it easier (if more obscure) to define your subclasses, but didn't change the basic nature of the beast. (In fact, in reality inner classes don't exist.) On Oct 22, 7:04 pm, Bob Kerns r...@acm.org wrote: Because you're left with two dead birds instead of one? A more serious answer would be that this stems from the early days of Java, and it was not so convenient to supply a Runnable, because there were no inner classes back then. A lack of experience with the language at that point left open the possibility that subclassing Thread to get various behaviours in addition to supplying the code to be run might be a sensible strategy. The documentation still offers extending thread as a co-equal option, but offers no reason why you would do that. To more modern eyes, doing so would be breaking down the separation of concerns. Not a serious failing, but offering no real advantages either. But at the time, the culture was much more focused in class hierarchy and inheritance. Gradually, over the years, we have learned that delegation, proxies, and related collaboration patterns are far more flexible and less fragile. On Oct 22, 2:32 pm, DanH danhi...@ieee.org wrote: Thread implements Runnable mainly as a convenience. When you want to start a thread you need a Runnable to execute. You can supply a separate Runnable, but, since you're already creating a Thread, why not just make it a Runnable too, and kill two birds with one stone? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Uploading an app to the Market for testing
Price at $199. On Oct 21, 1:59 pm, MB manoj.bi...@gmail.com wrote: You would have to quickly publish and then un-publish the app to test LVL in your app. This is the only way I could figure out. If you figure out something better please share it with the group. This is what I had to do for testing LVL even with the sample LVL code. --MB. On Oct 21, 8:49 am, Bret Foreman bret.fore...@gmail.com wrote: I've just added LVL and server-based licensing into my (as-yet unpublished) app. It appears that the license testing requires that the app exist in the Android Market. Is there a way to publish an app to the Market but keep it hidden while I test? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Type Conversion to Dalvik format failed: Unable to execute dex: null
This is a failure on build, right, not a failure of the installed app or a failure to install? Have you tried building a toy app, to verify that your development setup hasn't gotten corrupted? On Oct 21, 5:29 am, shuchi shuchimu...@gmail.com wrote: I am trying to create an Android maps project. Everything was working fine until i added Salesforce classes into it. Now it doesn't even compile. It gives me: Type Conversion to Dalvik format failed: Unable to execute dex: null error. I tried 1) Increasing memory in the .ini file. That didn't help. 2) Project - Clean option. It cleans, builds again and then gives me the same error. I am using Snow Leopard and i have the latest version of Android on my system. I just installed it last week. Plus, my eclipse is Ganymede. I even tried it with Galileo. Nothing seems to work. Did anyone face similar issues? Any help will be highly appreciated. Regards Shuchi -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: 答复: [android-developers] Re: How to connect to a remote MySQL DB without webservices... ?
The first thing you should do is write an application on a desktop PC to do the DB accesses you want (without using interfaces unavailable on Android). Work it out there, and then figure out how to map it to Android. On Oct 19, 4:58 am, goodwin weigoodw...@gmail.com wrote: Hi Kumar I don’t think google will let people lay any other .jar file , unless you rebuild the source code of android. / i will try using sqldroid library to my needs, i will try to connect to a remote mysql dabatabase, not sqlite and not local but im having some problems, plz can someone help me? - how can i add sqldroid-0.1.jar to my project (sorry but i am newbie and i can't find nothing about adding this to a project) - where i have to put these two lines? Class.forName(SQLite.JDBCDriver); DriverManager.getConnection(jdbc:sqlite:/data/data/your-package/ db.sqlite); - in the connection code, wich lines i have to change to connect to my remote database? my database is on 81.111.190.170:3306 thanks On 19 oct, 11:33, Kumar Bibek coomar@gmail.com wrote: As far as I can imagine, the whole concept of having a library that could connect to a remote DB is not worth for a mobile platform. You are not writing a desktop app anyway, which would require the whole DB with all it's features exposed through a remote DB connection. It too much for a mobile app I would say. Apart from the security issues, if at all you get a direct connection to a remote DB, then there is no point in keeping a local DB, which is bad in various situations (no network connectivity). In case you are having a local DB as well, don't you think it's redundant duplication of data, and also, don't you think that your code will also be more? Well, if you have a webservice over your DB on your servers, you still have to write extra bit of code, but then, you will only deal with functions that the webservice exposes, and thus, you would be handling a subset of all possible situations, if it would have been a direct DB connection. Another issue I might think can come up very soon, is that you are looking for a MySQL version library. If at all there are any for Android, I am sure, they are not yet matured enough to use in an enterprise level setup. You might want to change the DB to Oracle, or SQL server, are you sure that these libraries can really handle that well? I personally don't think so. May be in the future, they will be available, BUT RIGHT NOW, Use a webservice and SQLite, I would suggest. On Tue, Oct 19, 2010 at 2:50 PM, saex elpablos...@gmail.com wrote: i check that library and it's for LOCAL SQLITE databases! i am talking about remote mysql dabatabases, not sqlite and not local greets On 19 oct, 08:36, Miguel Morales therevolti...@gmail.com wrote: There is nothing implemented into the standard SDK to directly connect to a MySQL database. Your best bet might be to use something like an external library such as:http://code.google.com/p/sqldroid/ I've never used this myself though. On Mon, Oct 18, 2010 at 11:29 PM, JonFHancock jonfhanc...@gmail.com wrote: Not that I'm aware of, but remember that any code executed on a machine you do not control is untrusted. It would be all too easy for someone to modify your code in a way that can make calls to your db that corrupt the db. Making a php or java server-side application that you can just send http post data to is way too easy to justify the risk. On Oct 18, 2:29 pm, saex elpablos...@gmail.com wrote: Hi can i do it? I just wanna make SELECT/INSERT into a remote database with my android phone application, i think it have to be easy but i can't find the way. I only find people that tell i have to make a webservice os romething like that, but that is another world for me, and i can't put a webservice in the database host... ¿there is not a normal way to do it without a webservice? thanks -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- ~ Jeremiah:9:23-24 Android 2D MMORPG: http://developingthedream.blogspot.com/,http://www.youtube.com/user/r... -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to
[android-developers] Re: Message not getting posted
Because this BBS sucks. Google has a serious shoemaker's children problem. On Oct 18, 6:44 pm, Ray pamoned...@gmail.com wrote: Hello Moderators, I have been trying to send the message below since yesterday and I have tried posting it two times. I am not able to see it getting posted to the group. Can you please let me know why? Thanks, -Ray Posting the following e-mail: -- Forwarded message -- From: Ray pamoned...@gmail.com Date: Mon, Oct 18, 2010 at 1:01 PM Subject: App design question for multiple data connections To: Android Developers android-developers@googlegroups.com Hello, I am working on developing an application that requires me to establish multiple client-server based connections. Connection can be of two types where the Android device can be a server or a client. I can have up to 6 - 8 connections. Once the connections are set-up they need to be running in the background and are not typically affected by UI actions. Since each connection can be blocking, I am wondering what is a good way to design this app. Should I have two services for handling the server and client connections? Each service could have a connection manager that can spawn new threads when necessary. Or does creating two services even help? I presume spawning new processes would not be good as they will be expensive. I would appreciate any suggestions. Also, if this use case is not typical please let me know if you need more information to make any recommendation. Thanks, -Balaji -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Always getting java.lang.VerifyError on 1.6 but fine on 2.1 and 2.2
Probably true on Android, not universally true. Would fail on standard Java, like I said, if -Xfuture were specified. On Oct 21, 5:27 pm, fadden fad...@android.com wrote: On Oct 20, 11:10 am, DanH danhi...@ieee.org wrote: The wrapper class example is defective if the verifier is conventional -- doesn't have the swizzle you describe since 1.6. It works because the code does something like: if (version is 2.0 or later) use wrapped stuff else feature not available, do nothing The wrapper class would fail verification and not be usable, but references *to* the wrapped class would be okay. Verification happens between loading and initialization. If class C refers to class D, the VM needs to be able to load D and examine it, but does not need to initialize and verify D in order to verify C. This is still true in older versions of Android. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: stopping the GC from kicking in
I didn't view the video, but it sounds like he was on target. Modern programming techniques is often a euphemism for sloppy programming techniques, and one sloppy technique is not adjusting your style to the environment and environmental limitations. In this case, on a slow box with a clunky GC implementation, great effort needs to be put into minimizing the rate of heap consumption if one wishes to avoid GC pauses. The guy may have been extreme in his suggestions, but the general direction would be correct. On Oct 20, 1:43 am, Peter Webb r.peter.w...@gmail.com wrote: The first thing I recommend watching is this google presentation:http://www.google.com/events/io/2009/sessions/WritingRealTimeGamesAnd... I think the advice given in this video is basically wrong. It is a presentation done by a C++ programmer who has just written his first Java program. His idea of managing GC lag is to not instantiate any classes at all in real-time sections of the code. He spends a great deal of time explaining how difficult that is. This flies in the face of modern software design, which says build it right then build it fast. He basically says throw away most of the benefits of using auto-GC languages such as Java by writing your code in a very artifical way which avoids allocating memory. It is a pity because he could have told us some things we (or at least I) don't know, such as how the GC is triggered, whether it is device dependent, whather there are calls to suspend repacking the heap, practical stuff about how to best use a GC language for real-time apps. Trying to avoid anything at all which might cause GC to happen is throwing the baby out with the bathwater. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: TextView visibility problem
Ah, how do you handle a problem like Maria?? On Oct 20, 9:40 am, Julie Andrews julieonli...@gmail.com wrote: This group is so helpful On Wed, Oct 20, 2010 at 6:30 PM, sisko adeod...@gmail.com wrote: You are right. When I move the TextView up it is squashed but visible. Can you advice on how I can make it visible beneath the relative layout On 20 Oct, 03:22, metal mikey coref...@gmail.com wrote: It might be because the TextView is positioned offscreen. Try putting it prior to the RelativeLayout, if you can see it then then it's likely the RelativeLayout is pushing it offscreen when the TextView is placed after the RelativeLayout. On Oct 20, 10:07 am,siskoadeod...@gmail.com wrote: The following code is causing me problems as the last view, the TextView, does not display : LinearLayout xmlns:android=http://schemas.android.com/apk/res/android; android:id=@+id/LinearLayout01 android:background=@drawable/bkgrnd android:layout_height=fill_parent android:layout_width=fill_parent RelativeLayout android:id=@+id/RelativeLayout01 android:layout_width=wrap_content android:layout_height=wrap_content ImageView android:id=@+id/ImageView01 android:layout_width=wrap_content android:layout_height=wrap_content android:background=@drawable/quizicon android:layout_alignParentLeft=true android:layout_alignParentTop=true /ImageView TextView android:id=@+id/TextView01 android:layout_width=wrap_content android:layout_height=wrap_content android:text=@string/help android:layout_alignParentTop=true android:layout_centerHorizontal=true android:textSize=@dimen/menuxmlTitleSize android:textColor=@color/menuxmlTitleColor /TextView ImageView android:id=@+id/ImageView02 android:layout_width=wrap_content android:layout_height=wrap_content android:background=@drawable/quizicon android:layout_alignParentRight=true android:layout_alignParentTop=true /ImageView /RelativeLayout TextView android:text=@+id/TextView02 android:id=@+id/TextView_HelpText android:layout_width=fill_parent android:layout_height=wrap_content /TextView /LinearLayout Can anyone offer suggestions as to why the TextView does not showup in the present format? Also, please suggest good online resourse(s) that can help me learn good Android XML layout techniques, please. Thanks :-) -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- Juliehttp://tradinglogically.blogspot.comhttp://tradinglogically.blogspot.comhttp://vikitionary.blogspot.comhttp://gandhi-the-man-of-millenium.blogspot.com/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Always getting java.lang.VerifyError on 1.6 but fine on 2.1 and 2.2
The wrapper class example is defective if the verifier is conventional -- doesn't have the swizzle you describe since 1.6. On Oct 20, 12:53 pm, fadden fad...@android.com wrote: On Oct 19, 6:47 pm, DanH danhi...@ieee.org wrote: Even if you never actually execute the code that's causing the problem, the verifier will reject it, since it's doing a static check and can't tell what code is or isn't executed. That's a pretty concise explanation of the difference between 1.6 and 2.0. In = 1.6, if the verifier couldn't find a field or decided that you didn't have access to a package/private method, it would reject the entire class immediately. In = 2.0, the verifier inserts an always throw instruction and verification continues. Nothing fails unless you actually try to execute the code in question. It looks like xcxin.mysecret.mainSecretActivity.processContact() is attempting to access a static field android.provider.ContactsContract.CommonDataKinds.Phone.CONTENT_URI that didn't exist in 1.6. (In fact, I don't think ContactsContract existed in 1.6.) Some notes about backward compatibility can be found here: http://developer.android.com/resources/articles/backward-compatibilit... -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Always getting java.lang.VerifyError on 1.6 but fine on 2.1 and 2.2
(Though only, I suppose, if -Xfuture is specified/defaulted.) On Oct 20, 1:10 pm, DanH danhi...@ieee.org wrote: The wrapper class example is defective if the verifier is conventional -- doesn't have the swizzle you describe since 1.6. On Oct 20, 12:53 pm, fadden fad...@android.com wrote: On Oct 19, 6:47 pm, DanH danhi...@ieee.org wrote: Even if you never actually execute the code that's causing the problem, the verifier will reject it, since it's doing a static check and can't tell what code is or isn't executed. That's a pretty concise explanation of the difference between 1.6 and 2.0. In = 1.6, if the verifier couldn't find a field or decided that you didn't have access to a package/private method, it would reject the entire class immediately. In = 2.0, the verifier inserts an always throw instruction and verification continues. Nothing fails unless you actually try to execute the code in question. It looks like xcxin.mysecret.mainSecretActivity.processContact() is attempting to access a static field android.provider.ContactsContract.CommonDataKinds.Phone.CONTENT_URI that didn't exist in 1.6. (In fact, I don't think ContactsContract existed in 1.6.) Some notes about backward compatibility can be found here: http://developer.android.com/resources/articles/backward-compatibilit... -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: performance woes
It's theoretically possible that the phone is using your CPU to assist the signal processor in separating signal from noise. As the signal gets weaker and weaker this would increase the load on the CPU, and the phone is obviously going to give priority to signal processing over UI stuff. I don't know how modern phones are partitioned -- I assume that most of the radio work is handed over to a dedicated signal processor, but I can see that, to cost reduce the unit and cut it's size/weight/ power, mfgrs would tend to use the UI CPU for some signal processor management functions. On Oct 20, 4:29 pm, Kostya Vasilyev kmans...@gmail.com wrote: My Samsung Galaxy S also exhibits stuttering issues, launching applications often takes a few seconds. This happens with core phone apps, too, so reading an sms or making a phone call can sometimes be quite painful. On the other hand, my Motorola Milestone is always really snappy and is a joy to use. I think the difference has to do with Samsung's UI customizations, like the pageable application list, etc. The Milestone doesn't have those, running Android without enhancements of this kind. So my conclusion is - Android is pretty good, but phone makers can, and sometimes do, make it worse (or better, if you look at HTC, although not everyone likes their custom Sense UI either). Samsung is about to release an update to 2.2 for the Galaxy S, perhaps this will fix the stuttering issue. I'd advise you to wait for this update before making a final decision, and keep in mind that Android is not equally good (or bad) on every phone. -- Kostya Vasilyev --http://kmansoft.wordpress.com 21.10.2010 1:06 пользователь richie rich rich.al...@gmail.com написал: I have a Samsung Galaxy S. I'm a happy android developer, with a few marketplace apps. Hence, my frustration that overall, my experience with Getting the Galaxy S (after my G1) has been pretty fraught with performance sluggishness of the phone/overall OS. I find when the cel phone signal strength is anything less than 3 bars, the phone is basically unusable. Want to look up a contact, press, and wait 10 seconds for anything. Open and App? Go grab a coffee. I thought it was something that would get better, but it has gotten worse. Overall, are people generally impressed with Android performance? After a year as an Android user, I'm thinknig of going back to the iPhone world. I never waited as long for apps to start/respond as I am now and wonder, if this something Froyo would fix? Are there settings to help? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group athttp://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Memory Leaks
Yes, size matters from the standpoint of triggering GC, simply because GC is generally triggered when the total amount of allocated space exceeds some threshold (or when the amount allocated since the last GC exceeds some threshold). I worked on a GC implementation off and on for 12 years, so I'm fairly familiar with how things work. On Oct 19, 4:27 am, Daniel Drozdzewski daniel.drozdzew...@gmail.com wrote: On Mon, Oct 18, 2010 at 6:21 PM, DanH danhi...@ieee.org wrote: I doubt that adding content to the object would make it any more likely to be collected. The garbage collector doesn't generally weigh objects as to whether they should be collected or not. The only differentiating factors are 1) the absolute size of the object itself (not counting references to other objects), 2) the number of times the object has survived garbage collection, and (sometimes) 3) the class of the object. Dan, It is true that from a single object point of view, said object is either reachable from the root or is not, hence it can be garbage collected or it can not. However would you not agree, that from a heap management and GC strategy point of view size matters? Plenty of GC performance tuning tricks talk about the heap sizes, sizes of various generations and so on. From experience you can see, that GC kicks in much more often, when the amount of live objects on the heap increases (past certain thresholds). Heap resizing is also determined by the total size of life objects. I also know that in Android we don't have freedom to set those, which does not mean that they are not set. Please refer to following article: http://www.oracle.com/technetwork/java/gc-tuning-5-138395.html -- Daniel -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: How to connect to a remote MySQL DB without webservices... ?
It's kind of a hopeless cause: Android does not implement remote DB, and because of that it's considered unnecessary or unsafe. But I think you can do the operations yourself, if you're willing to get down and dirty with the protocols. On Oct 18, 4:29 pm, saex elpablos...@gmail.com wrote: Hi can i do it? I just wanna make SELECT/INSERT into a remote database with my android phone application, i think it have to be easy but i can't find the way. I only find people that tell i have to make a webservice os romething like that, but that is another world for me, and i can't put a webservice in the database host... ¿there is not a normal way to do it without a webservice? thanks -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Always getting java.lang.VerifyError on 1.6 but fine on 2.1 and 2.2
What did you compile against? You should always compile/build against the earliest version you hope to run on. On Oct 19, 4:25 am, Alex Xin xinxi...@gmail.com wrote: Hi, I have an app that runs perfect on 2.2 and 2.2 but always getting VerifyError on 1.6 while startup, I don't think that my app cannot run under 1.6 because I don't call any APIs that don't support 1.6. I'm really confused, does anybody has the same issue? How do you solve this problem? Thanks, Alex -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Always getting java.lang.VerifyError on 1.6 but fine on 2.1 and 2.2
Keep in mind that there are also Java version dependencies and library dependencies. I don't know what Java versions may correspond to what Android versions, but you can't eg, compile with a Java 6 targeted javac and expect to run on a Java 5 JDK. And in some cases you can run into trouble if you compile against a later version of something like one of the org.apache interfaces and then try to run on earlier. (In fact, with a few of the org.apache interfaces the problem can go both ways.) On Oct 19, 7:52 am, Tom Gibara tomgib...@gmail.com wrote: Yes. Temporarily changing the Project Build Target in the project's android properties (assuming you're using eclipse) should highlight any unexpected Java source incompatibilities. Tom. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: stopping the GC from kicking in
It kicks in because you used storage. Use less storage. (Actually not as dumb as that sounds -- you often can use, eg, a cache to avoid allocating new arrays and such and instead reuse old ones. And be a little less careless doing substrings, creating new arrays when slicing an existing one, etc. I've seen cases where relatively minor modifications reduced heap consumption by a factor of ten. (Note that the amount of heap used remains fairly constant or even increases a little, but the rate of creating new objects drops.)) But, having said that, sometimes the best approach for a situation like this is to force GC early, at a time in your program when the pause won't be noticed. On Oct 19, 4:11 pm, kk kkostia...@gmail.com wrote: Hi all, When the GC kicks in during my game I sometimes get a noticeable framerate drop, which is to be expected. In logcat I get the usual: D/dalvikvm( 85): GC freed 55745 objects / 3149712 bytes in 709ms Is there any way to get more info as to what is causing this? I.e. what in my code is causing the GC to kick in... cheers, kk. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Always getting java.lang.VerifyError on 1.6 but fine on 2.1 and 2.2
Right ***above*** the exception trace should be some arcane-looking messages with VFY in them. On Oct 19, 6:36 pm, Alex Xin xinxi...@gmail.com wrote: Hi, thanks for helping me, here's the logcat, you could see it crashes prior to call my onCreate() method. 10-20 07:32:27.490: ERROR/AndroidRuntime(204): java.lang.VerifyError: xcxin.mysecret.mainSecretActivity 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at java.lang.Class.newInstanceImpl(Native Method) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at java.lang.Class.newInstance(Class.java:1472) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at android.app.Instrumentation.newActivity(Instrumentation.java:1097) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2316) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at android.app.ActivityThread.access$2100(ActivityThread.java:116) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at android.os.Handler.dispatchMessage(Handler.java:99) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at android.os.Looper.loop(Looper.java:123) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at android.app.ActivityThread.main(ActivityThread.java:4203) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at java.lang.reflect.Method.invokeNative(Native Method) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at java.lang.reflect.Method.invoke(Method.java:521) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at dalvik.system.NativeStart.main(Native Method) On Wed, Oct 20, 2010 at 7:11 AM, fadden fad...@android.com wrote: On Oct 19, 2:25 am, Alex Xin xinxi...@gmail.com wrote: I have an app that runs perfect on 2.2 and 2.2 but always getting VerifyError on 1.6 while startup, I don't think that my app cannot run under 1.6 because I don't call any APIs that don't support 1.6. Post the output from logcat. Right above the exception trace should be some arcane-looking messages with VFY in them. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Always getting java.lang.VerifyError on 1.6 but fine on 2.1 and 2.2
Like I said ... Even if you never actually execute the code that's causing the problem, the verifier will reject it, since it's doing a static check and can't tell what code is or isn't executed. If you want to include some code in your application that is optionally loaded (because it's not compatible with all versions of the platform) you need to use the factory approach where you write a factory method that explicitly loads the class with ClassLoader calls and then does a newInstance on the loaded class (and returns the result of the newInstance). Externally you only reference the class by interface or superclass, so that the problematic class isn't loaded while verifying the referencing code. On Oct 19, 8:24 pm, Alex Xin xinxi...@gmail.com wrote: Thank you! Now I know where I can get those messages. 10-20 09:18:14.973: WARN/dalvikvm(210): VFY: unable to resolve static field 0 (CONTENT_URI) in Landroid/provider/ContactsContract$CommonDataKinds$Phone; 10-20 09:18:14.982: WARN/dalvikvm(210): VFY: rejecting opcode 0x62 at 0x0012 10-20 09:18:14.982: WARN/dalvikvm(210): VFY: rejected Lxcxin/mysecret/mainSecretActivity;.processContact (Landroid/database/Cursor;)V 10-20 09:18:14.982: WARN/dalvikvm(210): Verifier rejected class Lxcxin/mysecret/mainSecretActivity; Now I know where I am wrong, ContactsContract.CommonDataKinds is only available on API Level 5 or higher. Thank you all Alex On Wed, Oct 20, 2010 at 7:39 AM, DanH danhi...@ieee.org wrote: Right ***above*** the exception trace should be some arcane-looking messages with VFY in them. On Oct 19, 6:36 pm, Alex Xin xinxi...@gmail.com wrote: Hi, thanks for helping me, here's the logcat, you could see it crashes prior to call my onCreate() method. 10-20 07:32:27.490: ERROR/AndroidRuntime(204): java.lang.VerifyError: xcxin.mysecret.mainSecretActivity 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at java.lang.Class.newInstanceImpl(Native Method) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at java.lang.Class.newInstance(Class.java:1472) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at android.app.Instrumentation.newActivity(Instrumentation.java:1097) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2316) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at android.app.ActivityThread.access$2100(ActivityThread.java:116) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at android.os.Handler.dispatchMessage(Handler.java:99) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at android.os.Looper.loop(Looper.java:123) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at android.app.ActivityThread.main(ActivityThread.java:4203) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at java.lang.reflect.Method.invokeNative(Native Method) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at java.lang.reflect.Method.invoke(Method.java:521) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 10-20 07:32:27.490: ERROR/AndroidRuntime(204): at dalvik.system.NativeStart.main(Native Method) On Wed, Oct 20, 2010 at 7:11 AM, fadden fad...@android.com wrote: On Oct 19, 2:25 am, Alex Xin xinxi...@gmail.com wrote: I have an app that runs perfect on 2.2 and 2.2 but always getting VerifyError on 1.6 while startup, I don't think that my app cannot run under 1.6 because I don't call any APIs that don't support 1.6. Post the output from logcat. Right above the exception trace should be some arcane-looking messages with VFY in them. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com android-developers%2bunsubscr...@googlegroups.comandroid-developers%252bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr
[android-developers] Re: ConcurrentModificationException in SQLite
It's not a SQLite problem per se, it's a problem with the android.database stuff, or the way you're using it. (Has nothing to do with database access.) A HashMap referenced by android.database.sqlite.SQLiteDatabase.getDbStats is getting modified by another thread simultaneously. HashTable is threadsafe, but not HashMap. Presumably there's a restriction on android.database.sqlite.SQLiteDatabase.getDbStats and its kin with regard to access from multiple threads. (If not, there should be, or a HashTable should be used instead of the HashMap.) (Actually, looking at the SQLiteDatabase writeup I don't see any restrictions on multithread access so long as you haven't done setLockingEnabled(false), so this may well be an Android bug.) On Oct 19, 6:51 pm, Bret Foreman bret.fore...@gmail.com wrote: I'm doing some stress testing of my SQLite database using the testing monkey and I got the following exception, which appears to be from inside SQLite. My app has many threads accessing the database but all of them do so in locking mode so I don't think this exception is my fault. Any opinions on whether I should worry about this exception or if it's just an artifact of the extremely fast monkey keyboard access? 10-19 16:38:38.443: ERROR/JavaBinder(2035): *** Uncaught remote exception! (Exceptions are not yet supported across processes.) 10-19 16:38:38.443: ERROR/JavaBinder(2035): java.util.ConcurrentModificationException 10-19 16:38:38.443: ERROR/JavaBinder(2035): at java.util.HashMap $HashIterator.nextEntry(HashMap.java:795) 10-19 16:38:38.443: ERROR/JavaBinder(2035): at java.util.HashMap $KeyIterator.next(HashMap.java:822) 10-19 16:38:38.443: ERROR/JavaBinder(2035): at android.database.sqlite.SQLiteDatabase.getDbStats(SQLiteDatabase.java: 2133) 10-19 16:38:38.443: ERROR/JavaBinder(2035): at android.database.sqlite.SQLiteDebug.getDatabaseInfo(SQLiteDebug.java: 150) 10-19 16:38:38.443: ERROR/JavaBinder(2035): at android.app.ActivityThread$ApplicationThread.dump(ActivityThread.java: 1793) 10-19 16:38:38.443: ERROR/JavaBinder(2035): at android.os.Binder.dump(Binder.java:222) 10-19 16:38:38.443: ERROR/JavaBinder(2035): at android.os.Binder.onTransact(Binder.java:201) 10-19 16:38:38.443: ERROR/JavaBinder(2035): at android.app.ApplicationThreadNative.onTransact(ApplicationThreadNative.java: 407) 10-19 16:38:38.443: ERROR/JavaBinder(2035): at android.os.Binder.execTransact(Binder.java:288) 10-19 16:38:38.443: ERROR/JavaBinder(2035): at dalvik.system.NativeStart.run(Native Method) -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Memory Leaks
finalize isn't guaranteed to be called. If you want to know if an
object has been GCed, create a WeakReference to it and test that after
the GC.
But note that full GC isn't guaranteed to occur when you do gc
either. And some systems require two GCs to trigger finalize (or
clear a WeakReference).
And nulling out the only visible reference doesn't necessarily free
an object either. There still may be a hidden temporary pointer to
the object in the method invocation.
On Oct 18, 10:58 am, John Gaby jg...@gabysoft.com wrote:
I appear to have a memory leak(s) in my application, and I am trying
to get a handle on it by trying to understand more about garbage
collection. I have created the following application.
Here I have a class 'MyClass', and I create an instance of that class
in my 'onCreate'. I then null out the pointer which should leave no
references to that instance.
In 'MyClass', I override the finalize method so that I can see when
the object is destroyed. When I run this program, the finalize method
is never called, even if I call System.gc(), from within my program,
or use the 'Cause GC' button using DDMS. (This is the same behavior
that I see in my full application, by the way).
Can someone explain to me more about what is going on here. I believe
that in my main application, that I have objects that are not being
freed. Is there some strategy for identifying those objects?
Thanks.
/*
* Main Activity
*/
package com.gabysoft.memoryleak;
import android.app.Activity;
import android.os.Bundle;
public class MemoryLeak extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
MyClass mc = new MyClass();
mc = null;
setContentView(R.layout.main);
System.gc();
}
}
/*
* My Class
*/
package com.gabysoft.memoryleak;
import android.util.Log;
public class MyClass extends Object
{
MyClass()
{
Log.d(GabySoft, MyClass::MyClass() + this);
}
@Override
protected void finalize()
{
Log.d(Gabysoft, MyClass::finalize() + this);
}
}
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[android-developers] Re: Storage
How do you handle a problem like Maria?? On Oct 18, 10:34 am, Julie Andrews julieonli...@gmail.com wrote: Scroll down slowly and be honest to yourself. *man 1. board* Ans. = man overboard *stand 2. i* Ans. = I understand OK?…. Got the drift? Let’s try a few now and see how you fair? *3. /r/e/a/d/i/n/ g/* . . . . . . . . . .. . Ans. = reading between the lines *4. r road a d* . . . . . . . . . . . . . . . Ans. = cross road *5. cycle cycle cycle* . . . . . . . . . . . . . . . Ans. = tricycle *0 6. M.D. Ph.D.* . . . . . . . . . . . . . . . Ans. = two degrees below zero *knee 7. light* . . . . . . . . . . . . . . . Ans. = neon light (knee-on-light) *ground 8. ——— — feet feet feet feet feet feet* . . . . . . . . . . . . . . . Ans. = six feet underground *9. he’s / himself* . . . . . . . . . . . . . . . Ans. = he’s by himself *10. ecnalg* . . . . . . . . . . . . . . . Ans. = backward glance *11. death ….. life* . . . . . . . . . . . . . . . Ans. = life after death 12. THINK . . . . . . . . . . . . . . . Ans. think big !! And the last one is real fundoo .. *13. ababaaa ababaabbaaa. …* . . . . . . . . . . . . . . . Ans. long time no ‘C’ (see) On Mon, Oct 18, 2010 at 8:10 PM, Andy a...@fendley.com wrote: Hi, Does anyone know how to access programatically the internal(flash) and external(sd card) storage values such as space used and space available? I cant seem to find an api anywhere? Thanks for any help. Andy -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- Juliehttp://tradinglogically.blogspot.comhttp://tradinglogically.blogspot.comhttp://vikitionary.blogspot.comhttp://gandhi-the-man-of-millenium.blogspot.com/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Memory Leaks
What I really want is a way to find out whether an object has been freed (or will be freed) or not. I believe that I must have objects that are not being freed, and I would like to try and identify them. You can use WeakReferences for that. Create a WeakReference for the object. If the WeakReference get method returns null the object has been collected. (Or you can get fancy and use the ReferenceQueue feature.) On Oct 18, 11:40 am, John Gaby jg...@gabysoft.com wrote: Thanks for the input. I am a little confused about your comment: 'The fact that you did not see the log from finalize() does not mean it did not happen.' Are you saying that the finalize can be called and yet I may not get the log? How is that possible? I added the call to super.finalize() as you suggested (it didn't change anything), but please note that I really don't care about the finalize being called, except as a debugging tool. What I really want is a way to find out whether an object has been freed (or will be freed) or not. I believe that I must have objects that are not being freed, and I would like to try and identify them. Thanks On Oct 18, 9:26 am, Daniel Drozdzewski daniel.drozdzew...@gmail.com wrote: On Mon, Oct 18, 2010 at 4:58 PM, John Gaby jg...@gabysoft.com wrote: I appear to have a memory leak(s) in my application, and I am trying to get a handle on it by trying to understand more about garbage collection. I have created the following application. Here I have a class 'MyClass', and I create an instance of that class in my 'onCreate'. I then null out the pointer which should leave no references to that instance. In 'MyClass', I override the finalize method so that I can see when the object is destroyed. When I run this program, the finalize method is never called, even if I call System.gc(), from within my program, or use the 'Cause GC' button using DDMS. (This is the same behavior that I see in my full application, by the way). Can someone explain to me more about what is going on here. I believe that in my main application, that I have objects that are not being freed. Is there some strategy for identifying those objects? Thanks. Ok, few things first: - Android does not reclaim the memory straight away even after the application gets closed. - System.gc() does not guarantee garbage collection in a timely manner. - When overriding finalize() you have to call super.finalize(). The fact that you did not see the log from finalize() does not mean it did not happen. Daniel -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Memory Leaks
I doubt that adding content to the object would make it any more
likely to be collected. The garbage collector doesn't generally
weigh objects as to whether they should be collected or not. The
only differentiating factors are 1) the absolute size of the object
itself (not counting references to other objects), 2) the number of
times the object has survived garbage collection, and (sometimes) 3)
the class of the object.
On Oct 18, 11:57 am, Daniel Drozdzewski daniel.drozdzew...@gmail.com
wrote:
On Mon, Oct 18, 2010 at 5:54 PM, Daniel Drozdzewski
daniel.drozdzew...@gmail.com wrote:
On Mon, Oct 18, 2010 at 5:40 PM, John Gaby jg...@gabysoft.com wrote:
Thanks for the input. I am a little confused about your comment:
'The fact that you did not see the log from finalize() does not mean
it did not happen.'
It is possible that the finalize() has been called at much later point.
I should have probably said that lack of finalize() does not mean that
the memory has not been regained.
As Dan points out, finalizers don't necessary run.
If Android decided to kill the process running finished application,
then it would simply do it on a system level, without trying to clean
the heap within that VM first.
If you want to see finalizers at work, allocate many objects that you
don't hold on to:
for(int i=0; i1; i++ ) {
MyClass x = new MyClass();
}
...and then call the following:
System.runFinalization();
System.gc();
You should see your log statements.
btw, it would also help, if you made MyClass a bit heavier say by
adding a member String and assigning to it some longish string literal
in MyClass' constructor.
--
Daniel Drozdzewski
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[android-developers] Re: NoClassDefFoundError when running the app
Note that NoClassDefFound can also occur because the class was found but was incompatible with other classes it links to. On Oct 18, 12:48 pm, ping bernd.warm...@gmail.com wrote: Hi. I have a problem with a library which i would like to use in my project. Here is the situtation: I have an android project which has another Java Project in its build path. Thats fine. The other java project reffers to another *.jar library on its buildpath. Eclipse does not show any errors. But when i try to call a method of the java project out of my android project it cannot find the classes which are in the *.jar file of the java project. It throws a NoClassDefFoundException. Android seems to doesnt find the *.jar file within the other java- project. Can anyone tell me what's the problem here Again: the projectstructure: ANDROID PROJECT ---uses--- JAVA PROJECT --uses--- *.jar when I call a method of the javaproject out of the android project a NoClassDefFoundException is thrown at the point where classes of the *.jar file were used :/ greets -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Memory Leaks
You probably do need one of the tools that dumps the heap and shows
you the classes of the objects found.
And do note that Android (outside of the pure Java issues) has
issues of its own with regard to image storage. You can obey all of
the Java rules on clearing references and still get bit by Android
images.
On Oct 18, 12:41 pm, John Gaby jg...@gabysoft.com wrote:
So there is no way to force all objects that no longer have references
to them to be garbage collected?
Once again, I really don't need to know when the object is actually
freed. What I am interested in is finding out whether it CAN be
freed. That is whether all the references to it are gone. In my real
application, the objects in questions are much larger and more
complex. Yet, I never see the finalize called for them. This make me
think that I still have references to them, but since I don't see the
finalize called even in a simple case where I am sure there are no
references, I cannot be sure. I definitely have a leak, however,
since if I perform the same operation enough times, the application
eventually gets an Out Of Memory error.
I am taking a look at using ReferenceQueue, or PhantomReference for
that purpose but they seem to be way more complicated that I need.
Thanks again.
On Oct 18, 10:21 am, DanH danhi...@ieee.org wrote:
I doubt that adding content to the object would make it any more
likely to be collected. The garbage collector doesn't generally
weigh objects as to whether they should be collected or not. The
only differentiating factors are 1) the absolute size of the object
itself (not counting references to other objects), 2) the number of
times the object has survived garbage collection, and (sometimes) 3)
the class of the object.
On Oct 18, 11:57 am, Daniel Drozdzewski daniel.drozdzew...@gmail.com
wrote:
On Mon, Oct 18, 2010 at 5:54 PM, Daniel Drozdzewski
daniel.drozdzew...@gmail.com wrote:
On Mon, Oct 18, 2010 at 5:40 PM, John Gaby jg...@gabysoft.com wrote:
Thanks for the input. I am a little confused about your comment:
'The fact that you did not see the log from finalize() does not mean
it did not happen.'
It is possible that the finalize() has been called at much later point.
I should have probably said that lack of finalize() does not mean that
the memory has not been regained.
As Dan points out, finalizers don't necessary run.
If Android decided to kill the process running finished application,
then it would simply do it on a system level, without trying to clean
the heap within that VM first.
If you want to see finalizers at work, allocate many objects that you
don't hold on to:
for(int i=0; i1; i++ ) {
MyClass x = new MyClass();
}
...and then call the following:
System.runFinalization();
System.gc();
You should see your log statements.
btw, it would also help, if you made MyClass a bit heavier say by
adding a member String and assigning to it some longish string literal
in MyClass' constructor.
--
Daniel Drozdzewski
--
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[android-developers] Re: NoClassDefFoundError when running the app
Well, remember that the jar file CONTAINS class files. In a normal JDK environment the jar doesn't need to be compiled, since it already is. But in Android the contents of the jar does need to get included into the dex file(s) which end up in the apk. On Oct 18, 1:38 pm, ping bernd.warm...@gmail.com wrote: I figured out that no *.class files are generated when the project is building. I tried to clean the project but there are no *.class files of the *.jar in the bin folder of eclipse On Oct 18, 8:29 pm, DanH danhi...@ieee.org wrote: Note that NoClassDefFound can also occur because the class was found but was incompatible with other classes it links to. On Oct 18, 12:48 pm, ping bernd.warm...@gmail.com wrote: Hi. I have a problem with a library which i would like to use in my project. Here is the situtation: I have an android project which has another Java Project in its build path. Thats fine. The other java project reffers to another *.jar library on its buildpath. Eclipse does not show any errors. But when i try to call a method of the java project out of my android project it cannot find the classes which are in the *.jar file of the java project. It throws a NoClassDefFoundException. Android seems to doesnt find the *.jar file within the other java- project. Can anyone tell me what's the problem here Again: the projectstructure: ANDROID PROJECT ---uses--- JAVA PROJECT --uses--- *.jar when I call a method of the javaproject out of the android project a NoClassDefFoundException is thrown at the point where classes of the *.jar file were used :/ greets -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Memory Leaks
Kostya's link was a good one.
On Oct 18, 2:17 pm, John Gaby jg...@gabysoft.com wrote:
It is funny that you mention images, because I am pretty sure that my
leak is associated with images not being freed.
Can you point me to a reference that discusses the heap dumping tools?
Thanks again
On Oct 18, 11:35 am, DanH danhi...@ieee.org wrote:
You probably do need one of the tools that dumps the heap and shows
you the classes of the objects found.
And do note that Android (outside of the pure Java issues) has
issues of its own with regard to image storage. You can obey all of
the Java rules on clearing references and still get bit by Android
images.
On Oct 18, 12:41 pm, John Gaby jg...@gabysoft.com wrote:
So there is no way to force all objects that no longer have references
to them to be garbage collected?
Once again, I really don't need to know when the object is actually
freed. What I am interested in is finding out whether it CAN be
freed. That is whether all the references to it are gone. In my real
application, the objects in questions are much larger and more
complex. Yet, I never see the finalize called for them. This make me
think that I still have references to them, but since I don't see the
finalize called even in a simple case where I am sure there are no
references, I cannot be sure. I definitely have a leak, however,
since if I perform the same operation enough times, the application
eventually gets an Out Of Memory error.
I am taking a look at using ReferenceQueue, or PhantomReference for
that purpose but they seem to be way more complicated that I need.
Thanks again.
On Oct 18, 10:21 am, DanH danhi...@ieee.org wrote:
I doubt that adding content to the object would make it any more
likely to be collected. The garbage collector doesn't generally
weigh objects as to whether they should be collected or not. The
only differentiating factors are 1) the absolute size of the object
itself (not counting references to other objects), 2) the number of
times the object has survived garbage collection, and (sometimes) 3)
the class of the object.
On Oct 18, 11:57 am, Daniel Drozdzewski daniel.drozdzew...@gmail.com
wrote:
On Mon, Oct 18, 2010 at 5:54 PM, Daniel Drozdzewski
daniel.drozdzew...@gmail.com wrote:
On Mon, Oct 18, 2010 at 5:40 PM, John Gaby jg...@gabysoft.com
wrote:
Thanks for the input. I am a little confused about your comment:
'The fact that you did not see the log from finalize() does not
mean
it did not happen.'
It is possible that the finalize() has been called at much later
point.
I should have probably said that lack of finalize() does not mean
that
the memory has not been regained.
As Dan points out, finalizers don't necessary run.
If Android decided to kill the process running finished application,
then it would simply do it on a system level, without trying to
clean
the heap within that VM first.
If you want to see finalizers at work, allocate many objects that
you
don't hold on to:
for(int i=0; i1; i++ ) {
MyClass x = new MyClass();
}
...and then call the following:
System.runFinalization();
System.gc();
You should see your log statements.
btw, it would also help, if you made MyClass a bit heavier say by
adding a member String and assigning to it some longish string literal
in MyClass' constructor.
--
Daniel Drozdzewski
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[android-developers] Re: Should I use synchronized for a boolean variable
BS. On Oct 18, 3:59 pm, Bret Foreman bret.fore...@gmail.com wrote: Even if you just have one reader and one writer, you'll need to serialize access to the flag (with a mutex, for example). Otherwise, you might get an IOException if the flag is being written by one thread at the same time another thread tries to read it. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Should I use synchronized for a boolean variable
You need some sort of synchronization mechanism if you want to ASSURE
that the second thread sees the first thread's change of the flag
IMMEDIATELY. Otherwise the value of the flag could be cached (to a
degree), even though declared volatile. (However, one rarely runs
into a situation where twiddling a single flag isn't safe without
syncing.)
On Oct 18, 4:21 am, xeagle xeagle...@gmail.com wrote:
Hi,
I use a boolean variable flag both in main and child thread. This
flag is used to notify child thread to exit. I only use simple
operation, e.g., flag=false, if (flag) {}. As I know, in java,
get and set a boolean variable is atomic. So synchronized is not
needed for variable flag, declaring flag as volatile is enough.
Is this still true in Android?
Thanks
Jason He
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[android-developers] Re: Should I use synchronized for a boolean variable
Where did they say you could get an exception accessing an unsynchronized value? On Oct 18, 5:27 pm, Bret Foreman bret.fore...@gmail.com wrote: http://www.ibm.com/developerworks/java/library/j-jtp06197.html I'll stick with IBM's opinion. Note that they explicitly use a boolean as an example. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: OutOfMemoryError
Have you read what was written about calling onPause from onPause, onStop from onStop, etc? On Oct 17, 8:16 pm, Lisa lpk...@gmail.com wrote: hi, thank you very much、for your answers. (⌒.⌒)/ I moved recycle in onStop. thanks, was solved this problem, the bitmap. Canvas: trying to use a recycled bitmap android.graphics.bit...@437d8e60 thank you very very much. (@⌒.⌒@)/ but OutOffMemory problems is cotinue. (;＞_＜;) please, it can also help me. (つД｀;)ふぇ〜ん m(_ _)m -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Android : Can we have Packages inside Layout
Nope -- with the exception of the raw subdirectory, everything in the res directory must be flat. On Oct 14, 10:54 am, Jatin D Patel depo.ja...@gmail.com wrote: I have multiple view. But for systematic distribution of views (.xml files inside layout folder). I would like to have different packages (/folders) inside Layout. Is It possible. @Attached : Screen shot IF that is possible, is the following statement correct ?. If Not whats the solution? setContentView(R.layout.payBill.payMyBill); Thanks for help. -- Thanks, Jatin D N Patel Masters, Computer Sci. Suny Binghamton Univ, NY. You Got To Think HIGH to RISE. Untitled.jpg 11KViewDownload -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: OutOfMemoryError
but if I not put super.onPause (); show the following error:
10-15 02:16:10.778: ERROR/AndroidRuntime(193):
android.app.SuperNotCalledException: Activity {cai.eigojozu/
cai.eigojozu.episode.EpisodeActivity} did not call through to
super.onPause()
Can I do? (・_・?)
I think you have a deeper problem here. Generally each onXXX method
should call super of the SAME onXXX method.
On Oct 14, 11:21 pm, Lisa lpk...@gmail.com wrote:
thank you very much、for your answers. (⌒.⌒)/
--
viktor :
I switching image, implements the following:
if (imgViewBG != null) {
final Bitmap imageBG = BitmapFactory.decodeFile(strFile+.png);
imgViewBG.setImageBitmap(imageBG);}
--
Daniel :
the size of the image is
Yes I using big image 854x480, I did display full screen, It's
necesary in my app. f(・_・)
I used BitmapFactory.Options for preferably to the size, but image
quality not good.
My image have letters, so image quality is important.should write
letters?
I sorry , the second question is do not quite understand, how to as
checking
My english is not good. p(～_～?)
--
Prakash Iyer:
then where should reomever the bitmap? (・_・?)
--
DanH :
but if I not put super.onPause (); show the following error:
10-15 02:16:10.778: ERROR/AndroidRuntime(193):
android.app.SuperNotCalledException: Activity {cai.eigojozu/
cai.eigojozu.episode.EpisodeActivity} did not call through to
super.onPause()
Can I do? (・_・?)
--
fr4gus :
I'm looking, but do not quite understand, for example the difference
between hard and soft cahce. as used, etc.
Can you explain me? m(_ _)m please. ┌(_ _)┐
thank you very much indeed.
Thanks a lot for all your replies.
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[android-developers] Re: OutOfMemoryError
And calling super.onPause in your onPause.
On Oct 15, 10:54 am, Prakash Iyer thei...@gmail.com wrote:
I don't think you need to recycle the image in onPause. May be in onStop? If
you want to do it onPause, then you might want to let the Canvas know that
it's underlying image is no longer available in some fashion.
You should call super.X() when you override X as a general rule, so I think
DanH is referring to what looks like you are calling super.onPause in your
override of onDestroy. So you should be calling super.onDestroy...
On Fri, Oct 15, 2010 at 12:21 AM, Lisa lpk...@gmail.com wrote:
thank you very much、for your answers. (⌒.⌒)/
--
viktor :
I switching image, implements the following:
if (imgViewBG != null) {
final Bitmap imageBG = BitmapFactory.decodeFile(strFile+.png);
imgViewBG.setImageBitmap(imageBG);
}
--
Daniel :
the size of the image is
Yes I using big image 854x480, I did display full screen, It's
necesary in my app. f(・_・)
I used BitmapFactory.Options for preferably to the size, but image
quality not good.
My image have letters, so image quality is important.should write
letters?
I sorry , the second question is do not quite understand, how to as
checking
My english is not good. p(～_～?)
--
Prakash Iyer:
then where should reomever the bitmap? (・_・?)
--
DanH :
but if I not put super.onPause (); show the following error:
10-15 02:16:10.778: ERROR/AndroidRuntime(193):
android.app.SuperNotCalledException: Activity {cai.eigojozu/
cai.eigojozu.episode.EpisodeActivity} did not call through to
super.onPause()
Can I do? (・_・?)
--
fr4gus :
I'm looking, but do not quite understand, for example the difference
between hard and soft cahce. as used, etc.
Can you explain me? m(_ _)m please. ┌(_ _)┐
thank you very much indeed.
Thanks a lot for all your replies.
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[android-developers] Re: error code 5: database is locked
Where is the error being thrown from? (You might include the exception traceback.) On Oct 15, 9:44 am, gcstang gcst...@gmail.com wrote: Has anyone encountered this and is there a solution to work around it? I'm creating a Thread and in that thread I open a database connection using the DBHelper, perform an update on a field in my database and close it. I create a separate one in the Thread because if the View is closed the global one for that view is closed, causing my Thread update to throw an error. The thread is in a View, that also has it's own instance of the DBHelper and opens the database onCreate closes it onPause opens it onResume closes it onDestroy The instance in my Thread is throwing this but not all the time :error code 5: database is locked Is there a known practice I should implement so I don't get this error? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: android books
Nothing that counts as excellent (at least not that I've found). I've not found any that are anywhere near true references (in the sense of even one of the in a Nutshell books). They're all pretty much tutorials of one sort or another, some better organized and more comprehensive than others. Pro Android 2 is somewhat better than the others I've looked at, but still leaves a lot to be desired. On Oct 14, 7:52 am, MG my.android.a...@gmail.com wrote: Hi all. I am looking for an excellent Android references. What books and websites will you recommend that could be of great help even for a beginner like me? Thanks! -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: sqlite with ç/ñ
I would guess that SQLite attempts to do a case-insensitive query, but has a bug in converting non-Roman query values. On Oct 13, 3:33 pm, iñaki inaki.s...@gmail.com wrote: Thanks Bret!!! Well, I´ve solved put my string in lowercase... Weird... I´ve try by SQLite Database Browser and i get the same response... With Ç don´t work but ç get rows... Why? On 13 October 2010 17:08, Bret Foreman bret.fore...@gmail.com wrote: Try using double quotes around your strings rather than single. Something like this: String myCondition = field == \Ç\; -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Detecting CB Radio Signals with Android Phones
It's conceivable that one could use some sort of passive resonant frequency multiplier, but probably only in theory. On Oct 13, 2:06 pm, Gerry gerry.t...@gmail.com wrote: CB is in the ~28 MHz frequency range which falls in the HF 10 meter brand. Bluetooth and wifi, are in GHz range and Cellular is in 800Mhz to 2 GHz. so I don't see how the on board circuit can detect CB signals. However, I can see one can convert a Ramsey 10 meter receiver kit to do just that ! Gerry - FCC Licensed Amateur radio operator - Advanced Class and ARRL VE. On Oct 12, 4:07 am, Daniel Fung contentxtransl...@gmail.com wrote: Dear All, I was wondering whether it is possible to detect CB Radio signals with Android phones. It just needs to detect the presence of and would not need to transmit. Thanks in advance for any help that you could give me. Daniel -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: android.R.string.yes/no returns OK/Cancel instead of yes/no?
They're defined like they're defined -- if they were changed then a
lot of applications would be broken, whether changing them makes
sense or not.
The only reason for using them (vs your own values) is to save
yourself the trouble of translating your own yes/no values should
you decide to support another language.
On Oct 14, 11:53 am, xZise javaxz...@googlemail.com wrote:
I know that, but why there are constants named with yes and no but
containing ok and cancel? Is it common to answer a yes/no question
with ok/cancel? I hate this bad habit, because they sound not logical.
Sincerely
xZise
On Oct 13, 8:19 pm, DanH danhi...@ieee.org wrote:
Define your own application-local R.string values. How to define
string resources is one of the first things you should learn about
Android development.
On Oct 12, 3:23 pm, xZise javaxz...@googlemail.com wrote:
Hello, I want to display a simple dialog to ask if somebody has done
something.
public class YesNoTest extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final AlertDialog.Builder b = new AlertDialog.Builder(this);
b.setIcon(android.R.drawable.ic_dialog_alert);
b.setTitle(Hello World);
b.setMessage(Did you done your homework?);
b.setPositiveButton(android.R.string.yes, null);
b.setNegativeButton(android.R.string.no, null);
b.show();
}
}
Normally I would answer Yes or No, but the dialog only shows OK
and Cancel. Is it easily possible to change it to Yes/No with
localization?
Sincerely
xZise
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[android-developers] Re: OutOfMemoryError
Do you really want to do this:
protected void onDestroy () {
super.onPause ();
???
On Oct 12, 6:37 am, Lisa lpk...@gmail.com wrote:
Hi, My name is Lisa .
I am studying Android development.
So I have a problem
It immediately has trouble with memory.
In the LogCat this error is displayed,
java.lang.OutOfMemoryError: bitmap size exceeds VM budget
I'm using recycle () and System.gc () but I get the same error.
My application, is pressing a button switches to the next image and
the images are 854x480
Loading images from the SD Card.
show the images as follows
Bitmap imageB;
ImageView imgV;
imageB = BitmapFactory.decodeFile (sdcard / img.png);
imgV.setImageBitmap (imageB);
Release is as follow.
@ Override
protected void onDestroy () {
super.onPause ();
imageBG = null;
System.gc ();
}
please help me out to solve the issu.
sorry for my bad English
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[android-developers] Re: android.R.string.yes/no returns OK/Cancel instead of yes/no?
Actually, my preference is to use graphics for those two, if one is expecting to do much localization. A left-pointing red arrow or an X in a circle can mean cancel, while a right-pointing green arrow or a check mark can mean OK. On Oct 14, 12:27 pm, Kostya Vasilyev kmans...@gmail.com wrote: 14.10.2010 21:13, DanH пишет: The only reason for using them (vs your own values) is to save yourself the trouble of translating your own yes/no values should you decide to support another language. Even then, an application that only has those two strings in the current language, out of its whole UI, would look rather strange. And for proper localization, one might as well translate those two. -- Kostya Vasilyev -- WiFi Manager + pretty widget --http://kmansoft.wordpress.com -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: How can i set text in EditText
Other platforms have a facility for specifying prompt text to appear
in a text entry box, but I don't see an Android way to do it (though
I'm no expert). You could easily fake it, though, by making the
background of the EditText transparent and placing a TextView behind
it containing the prompt text. Clear the prompt text with the first
keystroke in the EditText.
On Oct 13, 4:43 pm, chcat vlyamt...@gmail.com wrote:
Hi all,
I am trying to implement simple user input validation in EditText,
something like
setText(type your password:)
...
if ( user input != secretword)
setText(incorrect, try again: )
So i am using onTextChanged to validate keyboard input, but how can
i set the text without going to infinite loop?
Thank you,
-V
EditText tv = new EditText(this);
tv.setText(type password );
tv.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
//XXX do something
}
public void beforeTextChanged(CharSequence s, int start, int
count,
int after) {
Log.w(before text changed: , s.toString());
}
public void onTextChanged(CharSequence s, int start, int
before, int count) {
//validate here and do what?
}
});
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[android-developers] Re: How can i set text in EditText
Yep, that would appear to be it. (Sorry I besmirched the good name of Android ;) ) On Oct 14, 1:51 pm, Daniel Drozdzewski daniel.drozdzew...@gmail.com wrote: On Thu, Oct 14, 2010 at 7:26 PM, DanH danhi...@ieee.org wrote: Other platforms have a facility for specifying prompt text to appear in a text entry box, but I don't see an Android way to do it (though I'm no expert). You could easily fake it, though, by making the background of the EditText transparent and placing a TextView behind it containing the prompt text. Clear the prompt text with the first keystroke in the EditText. Have a look at: TextView.setHint(int resid) -- Daniel Drozdzewski -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Differences between Android Button and JAVA buttons
The effective view area can be the whole screen with an alpha
channel. I've had components layered 10 deep on other platforms.
On Oct 12, 11:28 pm, Kumar Bibek coomar@gmail.com wrote:
You can have that, but again, the the effective view area is still a
rectangle, isn't it?
On Wed, Oct 13, 2010 at 9:44 AM, DanH danhi...@ieee.org wrote:
I mean, eg, provide an image of a circle, and have only the area
inside the circle (where alpha is non-zero) be sensitive.
On Oct 12, 10:58 pm, Kumar Bibek coomar@gmail.com wrote:
Ummm, What do you mean by modify that default? All the views take of a
rectangular estate area. This is generally the way how widgets are laid
out
virtually everywhere. Even while you are designing HTML pages, everything
is
a rectangle.
The boundaries of a view is always a rectangle.
On Wed, Oct 13, 2010 at 9:22 AM, DanH danhi...@ieee.org wrote:
I know that's the default. But other platforms have a way to modify
that default.
On Oct 12, 10:41 pm, Kumar Bibek coomar@gmail.com wrote:
By default it is a rectangle. All the views are rectangles as well.
As
Mark
said, they look different because of the backgrounds.
On Wed, Oct 13, 2010 at 9:02 AM, DanH danhi...@ieee.org wrote:
That is an interesting question: I haven't run across any way in
Android to control the shape of the sensitive area of a button. Is
it
always a rectangle, or can it be made circular, triangular, etc, by
making it conform to the shape of an image?
On Oct 11, 6:03 pm, Mark Murphy mmur...@commonsware.com wrote:
A button is shaped like a button courtesy of its background. In
the
case of a button, that is a StateListDrawable consisting of a
series
of nine-patch (stretchable) PNG files representing different
states
(normal, pressed, focused, disabled, etc.).
On Mon, Oct 11, 2010 at 7:01 PM, Dancing Fingers
batym...@gmail.com
wrote:
Hi guys,
I'm working on my own Hexagonal button which works in JAVA. I
was
studying Android Button.java:
@RemoteView
public class Button extends TextView {
public Button(Context context) {
this(context, null);
}
public Button(Context context, AttributeSet attrs) {
this(context, attrs,
com.android.internal.R.attr.buttonStyle);
}
public Button(Context context, AttributeSet attrs, int
defStyle)
{
super(context, attrs, defStyle);
}
}
I don't understand where it gets it shape. If you're adding an
anClickListener of does button know the geometry that's within
it's
boundries?
Any enlightenment would be appreciated.
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[android-developers] Description of how RelativeLayout works?
Can anyone point me to a good one? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: VerifyError: arbitrarily rejecting large method
From my knowledge of other Java verifiers/compilers, it's more the
complexity of the code rather than its absolute size that is likely to
be the problem. Methods that branch into a lot of parallel paths (big
nested switch statements, eg) will cause problems, and things get
worse if there are a lot of nested exception handler ranges (try-
finally ranges are the worst).
In addition to somehow reducing the width of parallel branching (eg,
by placing inner switch statements in their own methods), if you can
reduce the number of global local variables (method local variables
that reach all branch paths) that's likely to help substantially.
On Oct 13, 11:42 am, MarVel marina.velik...@gmail.com wrote:
Hi,
I'm working on an android application for the analysis of measurements
(e.g, blood pressure) using a Bayesian network model (PEModelOR is the
class in my android application), which is embedded in a smart phone.
Since the measurements are to be taken at sequential times, the model
contains a number of variables referring to different time controls.
With the initial version with 2 controls the model run without a
problem but when I extended the model to 4 controls it crashed
producing the following error:
10-12 16:50:15.291: WARN/dalvikvm(4848): VFY: arbitrarily rejecting
large method (regs=134 count=17618)
10-12 16:50:15.291: WARN/dalvikvm(4848): VFY: rejected Lcom/example/
pregmonit/PEModelOR;.init ()V
10-12 16:50:15.291: WARN/dalvikvm(4848): Verifier rejected class Lcom/
example/pregmonit/PEModelOR;
10-12 16:50:15.311: DEBUG/AndroidRuntime(4848): Shutting down VM
10-12 16:50:15.311: WARN/dalvikvm(4848): threadid=1: thread exiting
with uncaught exception (group=0x40027e08)
10-12 16:50:15.341: ERROR/AndroidRuntime(4848): FATAL EXCEPTION: main
10-12 16:50:15.341: ERROR/AndroidRuntime(4848): java.lang.VerifyError:
com.example.pregmonit.PEModelOR
10-12 16:50:15.341: ERROR/AndroidRuntime(4848): at
com.example.pregmonit.EBayes.init(EBayes.java:20)
10-12 16:50:15.341: ERROR/AndroidRuntime(4848): at
com.example.pregmonit.EBayes.android_main(EBayes.java:78)
10-12 16:50:15.341: ERROR/AndroidRuntime(4848): at
com.example.pregmonit.Status.onCreate(Status.java:54)
I saw that in a recent
discussionhttp://groups.google.com/group/android-developers/browse_thread/threa...
Dirk has encountered the same problem but unfortunately I could not
see any solution to that.
The extended PEModelOR method runs without problems in Java but it
fails in the android application due to the dalvikvm verifier as far
as I understood. The PEModelOR method is a description of a Bayesian
Network in java and it simply contains definition of 62 variables and
62 probability distribution tables (in total 700 lines and the java
file is 41 KB); below is a sample of the code (note that BayesNet is a
class loaded via external jar):
import BayesianNetworks.*;
public class PEModelOR extends BayesNet {
public PEModelOR() {
name = PEModelOR;
..
final DiscreteVariable DB =
new DiscreteVariable (DB,
DiscreteVariable.CHANCE,
new String[] { yes,no });
...
DiscreteFunction p62=
new DiscreteFunction(
new DiscreteVariable[] {DB},
new DiscreteVariable[] {FHDiab},
new double[] {0.0052, 0.2, 0.9948, 0.8 });
...
Does the size/definition of PEModelOR cause the problem? I'm not sure
how I can split it as it needs to be loaded at once for creating the
network and running the model with available measurements. The thing
is that this is even not the final version of the model, where the
goal is to have 11 time controls, ending up with 112 variables and
probability tables, and 1245 lines.
Is there a way out or alternative of implementing PEModelOR so that it
does not fail at verification?
I will highly appreciate any help and suggestions on solving this
problem. Thanks a lot in advance.
Cheers, MarVel
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[android-developers] Re: Trouble with program - button only clickable once.
You do know, don't you, that you're generating a random number between
0 and 5, but only have switch cases 1-3? IIRC, without a default
case the code will take an exception on an out-of-range switch value.
And I don't see the point of your if (!clicked) test in onCreate.
On Oct 10, 10:04 pm, Brian brian.corbin.o...@gmail.com wrote:
I want the user to be able to click the generate button multiple
times, but it can only be clicked once after the start screen. I have
my screen change to a different view based on which random number is
made. I want my program to generate another random number as many
times as the user wants. But my program only allows it to happen
once. Any way I can make it so that it is clickable an infinite
number of times?
My code is below:
package org.factgenerator;
import java.util.Random;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
public class Facts extends Activity implements OnClickListener{
Random rand = new Random();
int randomNumber;
View generateButton;
boolean clicked = false;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
View generateButton = findViewById(R.id.generate_button);
if(!clicked){
generateButton.setOnClickListener(this);
}
}
public void generateNumber(){
int n = 5;
randomNumber = rand.nextInt(n+1);
}
@Override
public void onClick(View v) {
clicked = true;
generateNumber();
switch(randomNumber){
case 1:
setContentView(R.layout.fact1);
generateNumber();
clicked = false;
break;
case 2:
setContentView(R.layout.fact2);
generateNumber();
clicked = false;
break;
case 3:
setContentView(R.layout.fact3);
generateNumber();
clicked = false;
break;
}
//generateButton.setOnClickListener(this);
}
}
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[android-developers] Re: android.R.string.yes/no returns OK/Cancel instead of yes/no?
Define your own application-local R.string values. How to define
string resources is one of the first things you should learn about
Android development.
On Oct 12, 3:23 pm, xZise javaxz...@googlemail.com wrote:
Hello, I want to display a simple dialog to ask if somebody has done
something.
public class YesNoTest extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final AlertDialog.Builder b = new AlertDialog.Builder(this);
b.setIcon(android.R.drawable.ic_dialog_alert);
b.setTitle(Hello World);
b.setMessage(Did you done your homework?);
b.setPositiveButton(android.R.string.yes, null);
b.setNegativeButton(android.R.string.no, null);
b.show();
}
}
Normally I would answer Yes or No, but the dialog only shows OK
and Cancel. Is it easily possible to change it to Yes/No with
localization?
Sincerely
xZise
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[android-developers] Re: Need I-phone app converted into an Android app.
Apple will reject an app if they don't like the way you tie your shoes. On Oct 13, 1:54 pm, Bret Foreman bret.fore...@gmail.com wrote: Can you give more details around the reason for rejection? Did it have to do with technology, security, or business? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Need I-phone app converted into an Android app.
Converting an app from iPhone to Android is non-trivial. There may be some companies that advertise the ability to do it (mostly) automatically, but expect to pay for that, and don't expect perfection. On Oct 12, 4:02 pm, Murray sotadevelopm...@gmail.com wrote: An app that our company built for the I-phone was rejected. We would like to find someone who can convert the app over to the Android. The app was built using the Unity 3D engine. If any additional info is need then please feel free to post back. Thanks -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Differences between Android Button and JAVA buttons
That is an interesting question: I haven't run across any way in
Android to control the shape of the sensitive area of a button. Is it
always a rectangle, or can it be made circular, triangular, etc, by
making it conform to the shape of an image?
On Oct 11, 6:03 pm, Mark Murphy mmur...@commonsware.com wrote:
A button is shaped like a button courtesy of its background. In the
case of a button, that is a StateListDrawable consisting of a series
of nine-patch (stretchable) PNG files representing different states
(normal, pressed, focused, disabled, etc.).
On Mon, Oct 11, 2010 at 7:01 PM, Dancing Fingers batym...@gmail.com wrote:
Hi guys,
I'm working on my own Hexagonal button which works in JAVA. I was
studying Android Button.java:
@RemoteView
public class Button extends TextView {
public Button(Context context) {
this(context, null);
}
public Button(Context context, AttributeSet attrs) {
this(context, attrs, com.android.internal.R.attr.buttonStyle);
}
public Button(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
}
I don't understand where it gets it shape. If you're adding an
anClickListener of does button know the geometry that's within it's
boundries?
Any enlightenment would be appreciated.
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[android-developers] Re: Differences between Android Button and JAVA buttons
I know that's the default. But other platforms have a way to modify
that default.
On Oct 12, 10:41 pm, Kumar Bibek coomar@gmail.com wrote:
By default it is a rectangle. All the views are rectangles as well. As Mark
said, they look different because of the backgrounds.
On Wed, Oct 13, 2010 at 9:02 AM, DanH danhi...@ieee.org wrote:
That is an interesting question: I haven't run across any way in
Android to control the shape of the sensitive area of a button. Is it
always a rectangle, or can it be made circular, triangular, etc, by
making it conform to the shape of an image?
On Oct 11, 6:03 pm, Mark Murphy mmur...@commonsware.com wrote:
A button is shaped like a button courtesy of its background. In the
case of a button, that is a StateListDrawable consisting of a series
of nine-patch (stretchable) PNG files representing different states
(normal, pressed, focused, disabled, etc.).
On Mon, Oct 11, 2010 at 7:01 PM, Dancing Fingers batym...@gmail.com
wrote:
Hi guys,
I'm working on my own Hexagonal button which works in JAVA. I was
studying Android Button.java:
@RemoteView
public class Button extends TextView {
public Button(Context context) {
this(context, null);
}
public Button(Context context, AttributeSet attrs) {
this(context, attrs, com.android.internal.R.attr.buttonStyle);
}
public Button(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
}
I don't understand where it gets it shape. If you're adding an
anClickListener of does button know the geometry that's within it's
boundries?
Any enlightenment would be appreciated.
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[android-developers] Re: out of memory, VM won't let us allocate,.
I'm guessing it has to do with the bitmap size here:
Out of memory: Heap Size=5639KB, Allocated=3134KB, Bitmap Size=18669KB
The Android has a mysterious and troublesome bitmap caching scheme,
and sometimes this requires the explicit issuance of System.gc
calls, even though the Java book says that should never be necessary.
And the programmer can exacerbate the situation by not cleaning up
old images properly, though I'm a babe in the woods in terms of
understanding that snake pit.
On Oct 12, 9:58 pm, n2v2rda2 l...@unimocnc.co.kr wrote:
below is my code to make bitmap from network-jpeg-stream whose size
is 360*288
i don't know how to handle it ,
---
private void makeImage() {
try {
System.arraycopy(BA.toByteArray(), 0, temporaryBA, 0,
BA.length());
int tempBALength = BA.length();
if (BA.byteAt(startJpeg) == (byte) 0xff
BA.byteAt(startJpeg + 1)
== (byte) 0xD8) {
if ((BA.byteAt(endJpeg - 1) == (byte) 0xff
BA.byteAt(endJpeg)
== (byte) 0xD9)
|| (BA.byteAt(endJpeg - 2) ==
(byte) 0xff BA.byteAt(endJpeg -
1) == (byte) 0xD9)) {
BitmapFactory.Options options = new
BitmapFactory.Options();
options.inSampleSize = 2;
options.inTempStorage = new byte[256];
Bitmap orgBitmap =
BitmapFactory.decodeByteArray(temporaryBA,
startJpeg, endJpeg - startJpeg +1,options);
Bitmap bitmap =
Bitmap.createScaledBitmap(orgBitmap, width,
(height / 2) , true);
if (bitmap != null) {
screenshot = new byte[endJpeg
- startJpeg +1];
System.arraycopy(temporaryBA,
startJpeg, screenshot, 0, endJpeg
- startJpeg +1);
Message msg =
Message.obtain(handler, 0, current_ch, 0, bitmap);
handler.sendMessage(msg);
} else {
BA.clear();
}
}else{
BA.clear();
}
}else {
BA.clear();
}
BA.clear();
BA.setLength(0);
BA.append(temporaryBA, iEndMarkIndex, tempBALength -
iEndMarkIndex);
} catch (IllegalArgumentException e) {
BA.clear();
} catch (OutOfMemoryError om) {
BA.clear();
} catch (NullPointerException np) {
BA.clear();
} catch (IndexOutOfBoundsException io) {
BA.clear();
}
}
---logcat -
error
10-13 11:22:03.472: ERROR/dalvikvm-heap(6060): 384000-byte external
allocation too large for this process.
10-13 11:22:03.472: ERROR/dalvikvm(6060): Out of memory: Heap
Size=5639KB, Allocated=3134KB, Bitmap Size=18669KB
10-13 11:22:03.472: ERROR/(6060): VM won't let us allocate 384000
bytes
10-13 11:22:03.582: INFO/DEBUG(5641): *** *** *** *** *** *** *** ***
*** *** *** *** *** *** *** ***
10-13 11:22:03.582: INFO/DEBUG(5641): Build fingerprint: 'skt_kr/
htc_bravo/bravo/bravo:2.1-update1/ERE27/171460:user/release-keys'
10-13 11:22:03.582: INFO/DEBUG(5641): pid: 6060, tid: 6081 rams
10-13 11:22:03.582: INFO/DEBUG(5641): signal 11 (SIGSEGV), fault addr
10-13 11:22:03.582: INFO/DEBUG(5641): r0 003d48d0 r1 r2
r3 003d48f4
10-13 11:22:03.582: INFO/DEBUG(5641): r4 003d48d0 r5 r6
r7
10-13 11:22:03.582: INFO/DEBUG(5641): r8 483b3d08 r9 42ea2ed4 10
483b3e38 fp 42ea2ed4
10-13 11:22:03.582: INFO/DEBUG(5641): ip 003d48d0 sp 483b3ae8 lr
pc ac04ab2c cpsr 6010
10-13 11:22:03.612: INFO/DEBUG(5641): #00 pc 0004ab2c /
system/lib/libskia.so
10-13 11:22:03.612: INFO/DEBUG(5641): #01 pc 0004abf0 /
system/lib/libskia.so
10-13 11:22:03.612: INFO/DEBUG(5641): #02 pc 000689d4 /
system/lib/libskia.so
10-13 11:22:03.622: INFO/DEBUG(5641): #03 pc 00064154 /
system/lib/libskia.so
10-13 11:22:03.622: INFO/DEBUG(5641): #04 pc 0004446c /
system/lib/libandroid_runtime.so
10-13 11:22:03.622:
[android-developers] Re: Differences between Android Button and JAVA buttons
I mean, eg, provide an image of a circle, and have only the area
inside the circle (where alpha is non-zero) be sensitive.
On Oct 12, 10:58 pm, Kumar Bibek coomar@gmail.com wrote:
Ummm, What do you mean by modify that default? All the views take of a
rectangular estate area. This is generally the way how widgets are laid out
virtually everywhere. Even while you are designing HTML pages, everything is
a rectangle.
The boundaries of a view is always a rectangle.
On Wed, Oct 13, 2010 at 9:22 AM, DanH danhi...@ieee.org wrote:
I know that's the default. But other platforms have a way to modify
that default.
On Oct 12, 10:41 pm, Kumar Bibek coomar@gmail.com wrote:
By default it is a rectangle. All the views are rectangles as well. As
Mark
said, they look different because of the backgrounds.
On Wed, Oct 13, 2010 at 9:02 AM, DanH danhi...@ieee.org wrote:
That is an interesting question: I haven't run across any way in
Android to control the shape of the sensitive area of a button. Is it
always a rectangle, or can it be made circular, triangular, etc, by
making it conform to the shape of an image?
On Oct 11, 6:03 pm, Mark Murphy mmur...@commonsware.com wrote:
A button is shaped like a button courtesy of its background. In the
case of a button, that is a StateListDrawable consisting of a series
of nine-patch (stretchable) PNG files representing different states
(normal, pressed, focused, disabled, etc.).
On Mon, Oct 11, 2010 at 7:01 PM, Dancing Fingers batym...@gmail.com
wrote:
Hi guys,
I'm working on my own Hexagonal button which works in JAVA. I was
studying Android Button.java:
@RemoteView
public class Button extends TextView {
public Button(Context context) {
this(context, null);
}
public Button(Context context, AttributeSet attrs) {
this(context, attrs,
com.android.internal.R.attr.buttonStyle);
}
public Button(Context context, AttributeSet attrs, int defStyle)
{
super(context, attrs, defStyle);
}
}
I don't understand where it gets it shape. If you're adding an
anClickListener of does button know the geometry that's within it's
boundries?
Any enlightenment would be appreciated.
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[android-developers] Re: Proper way to use Non-Extended Classes?
SharedPreferences pref
=ctcx.getSharedPreferences(MyPref,Context.MODE_PRIVATE);
On Oct 7, 2:23 pm, Ehask ehas...@gmail.com wrote:
I have an app I am working on and being new to Android Dev I am
running into a situation
I have a Scores class not extended from anything (Activity,Service,
etc) but in the same package that needs to access SharedPreferences
public class Scores {
Context ctcx;
public Scores(Context context) {
ctcx = context;
}
public void resetScores(){
SharedPreferences pref =
getSharedPreferences(MyPref,ctcx.MODE_PRIVATE);
}
}
Always results in constructor not defined? All the imports are there
and Eclipse doesnt flag until it tries to run on emulator. Does
everything have to extend something in android?
Thx for any guidance
Eric
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[android-developers] Re: usb connection issues
I have Vista 64 and the Google phone (forget the name). Have not seen this problem. I do have assorted shutdown problems, but generally of the opposite nature -- powers off (hard) rather than hibernating. On Oct 10, 11:07 am, dashman erjdri...@gmail.com wrote: my platform is vista 64 + droid. it connects and i can download apps 3-4 times and then cannot send - times out. i cannot even restart vista - the shutdown screen just hangs. i have to shut it down manually. any help appreciate - this is throwing a real kink in my dev cycle. i have usb driver #3. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Buying numbers vs developing numbers
You figuring that if we each bought each other's apps it would improve business?? On Oct 10, 10:25 am, Bret Foreman bret.fore...@gmail.com wrote: It would be interesting to know if the number of people buying apps is growing as fast as the number developing them. Has anyone seen data about either? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Is it possible
(provided you code uses its public IP address to connect to it). That is the key. The internal Android-to-host IP address (I forget what it is) cannot be used. On Oct 10, 6:22 am, David Turner di...@android.com wrote: If the server is addressable from the Internet (i.e. not under a NAT or firewall that hides it), then it should work (provided you code uses its public IP address to connect to it). On Sat, Oct 9, 2010 at 4:57 AM, Jatin D Patel depo.ja...@gmail.com wrote: I have developed an android app which calls the web service which runs smoothly on my emulator. Will the same appl work if i installed the same application on android mobile device and call the webservice. (server running on my laptop) -- Thanks, Jatin D N Patel Masters, Computer Sci. Suny Binghamton Univ, NY. You Got To Think HIGH to RISE. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Looking for help testing an app
Sounds like a worthwhile concept, but I don't listen to music on my phone (or iPod or anything else). On Oct 10, 1:04 am, Mike M mike.mos...@gmail.com wrote: Hey everyone, I don't know if this is kosher, but I wanted to see if anyone would want to test an app I built. I don't want to release an app to the market without getting out all the bugs I can, but I'm a lone developer trying to build apps on the side in my free time. I don't know many people with Droids, so I'm trying to reach out to the community. I built an app I call Next Track on Shake. Not a good name, (and I'm up for suggestions for a better name) but I can't think of anything else to explain its function. I listen to alot of music, usually on shuffle, and I hate having to wake the phone up, unlock the screen, open the music player, and change the track. The new versions of Android require PIN or Password when you use a corporate account, and that adds another step in changing tracks. I built an app that allows you to shake the phone, whether awake or not, and it will move to the next track for you. I also added the ability to customize the shake; you can set how hard or how fast you need to shake the phone to change the track. The default shake is a good setting for most people, but alot of people jog with the phone on their arm or hip and would need to adjust the strength of the shake so as to not accidentally change tracks. I've also added the ability to stop/start the service when needed, and I display an ongoing notification when the service is running. When the phone is rebooted, the app checks the preferences, and only starts the app if you had the service running before reboot. That's my app in a nutshell. As I said, I'd love it to be as bug-free as possible when I release it, so I'm looking for some help. Please leave comments with any feedback, issues, or suggestions you have. I appreciate everyone's help. Here's the link to the app: http://www.megaupload.com/?d=E1YXV89X Thanks, Mike M -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: The dreaded error: Error parsing XML: XML or text declaration not at start of entity
Export the project, delete it, then import it? On Oct 10, 12:51 pm, Bret Foreman bret.fore...@gmail.com wrote: I accidentally imported a resource file with a capital letter in the name (SDK 8) and as we all know, that corrupts the R.java file in a way that rebuilding the project doesn't fix (I renamed the file to something legal from within Eclipse, of course). So now the build chokes with the error above when it hits the first xml file in res. In SDK 7 the only fix was to build a fresh project and move everything over. I'm hoping there is something better in SDK 8. Anyone know of it? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: The dreaded error: Error parsing XML: XML or text declaration not at start of entity
Though seems like cleaning the project should work. On Oct 10, 12:51 pm, Bret Foreman bret.fore...@gmail.com wrote: I accidentally imported a resource file with a capital letter in the name (SDK 8) and as we all know, that corrupts the R.java file in a way that rebuilding the project doesn't fix (I renamed the file to something legal from within Eclipse, of course). So now the build chokes with the error above when it hits the first xml file in res. In SDK 7 the only fix was to build a fresh project and move everything over. I'm hoping there is something better in SDK 8. Anyone know of it? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Accessing the apk-signing certificate from inside the program
Supposedly you can fetch your public keys from PackageInfo.signatures. (Should only be one if the package is only signed once.) (Yeah, I know -- key != signature, but I have it from the Highest Authority that that interface returns the keys.) On Oct 7, 10:58 am, BGraversen br...@digital-identity.dk wrote: Hi. I've posted this on Android Security as well, but that group does not appear to have as much activity, so I'm hoping someone here can help me. Actually I guess my question belongs in this group anyway, even though it touches on some of the security aspects of android packages. My goal is to access the certificate that was used to sign the apk package; and ordinarily, I would do that from inside the program like this Certificates[] signingCertificates = getClass().getProtectionDomain().getCodeSource().getCertificates(); Unfortunately it appears that getProtectionDomain() returns null on android - according to the specs http://developer.android.com/reference/java/lang/Class.html#getProtec... this method might return null (to converse space?), but only for system classes. Since I'm calling this from one of my own classes, I would expect to get a non-null value, but unfortunately not :( I have tried from the emulator, and from an application deployed on my phone using adb through a USB cable. I'm using the latest SDK (2.2) and targeting android 1.6. So I guess I have two questions, the first being: why does getProtectionDomain return null, and have anyone had any success using this method from inside an android application. And the second: Is there some other way to access the certificate that a given apk package was signed with (I can live with the restriction that only a given package can know its own certificate). Kind regards Brian Graversen -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Buying numbers vs developing numbers
So long as it works long enough for me to retire ... On Oct 10, 1:27 pm, Kostya Vasilyev kmans...@gmail.com wrote: I think it was shown - by the NASDAQ crash in March 2000 - that this particular economic model does not work for too long... :) -- Kostya Vasilyev --http://kmansoft.wordpress.com 10.10.2010 21:06 пользователь Bret Foreman bret.fore...@gmail.com написал: Well, yeah, and we each buy our own too. So everybody gets two downloads. -- You received this message because you are subscribed to the Google Groups Android Developers ... -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Unable to sign jar
It might have worked out to just clean your app. On Oct 9, 3:43 am, Ali Chousein ali.chous...@gmail.com wrote: It seems that it's a bug in Eclipse. I use 3.5. Besides the corrupted apk, my eclipse started behaving quite weird (like remembering the contents of the manifest file of a project I removed and also erased from my hard disk). Anyway, I erased the instance of eclipse from my hard drive, reconfigured it and things went back to normal again. Unfortunately I don't know how to reproduce it. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: How to convert xml to svg in Android
Isn't svg based on xml ? From what little I understand, yes. Examine the file with a source browser and see if it looks OK. On Oct 8, 11:01 pm, 大风 jindafeng2...@gmail.com wrote: Now I just parse the svg file the same way as xml file , in order to get some information and the draw the picture on the Android by myself , I can parse xml file but failed in svg file , Isn't svg based on xml ? On Oct 8, 11:43 pm, DanH danhi...@ieee.org wrote: If at all possible you should use a utility to convert the SVG to some other format before loading it onto the phone. On Oct 8, 9:11 am, 大风 jindafeng2...@gmail.com wrote: So I want to write it myself, there are already apps that implement it but no source code. On Oct 8, 9:15 pm, jamesc jame...@gmail.com wrote: Android doesn't currently have SVG support:http://developer.android.com/guide/appendix/media-formats.html On Oct 8, 1:03 pm, 大风 jindafeng2...@gmail.com wrote: Well,Now I want to parse the svg file in Android.What do I need to do? On Oct 8, 7:06 pm, DanH danhi...@ieee.org wrote: Rename it from .xml to .svg? (Of course, this will only work if it's the valid XML for an SVG image.) On Oct 8, 2:12 am, 大风 jindafeng2...@gmail.com wrote: How to convert xml to svg in Android, Anybody anyideas? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Exception every time I launch the application
This exception doesn't occur until the problem layout is actually loaded, meaning if it occurs before the first screen comes up it's the layout for the first screen. And the exception is raised when setContentView is done with the problem layout ID. If you step through your code you'll likely see it blow up when setContentView is being done for your first screen. On Oct 9, 5:01 pm, Pankaj pankajiit...@gmail.com wrote: Ya I got that much from the exception, But in which XML ? I could not figure that out that is why I have provided the xml files On Oct 9, 4:00 am, DanH danhi...@ieee.org wrote: Speak of the devil! (Just had this problem myself.) Read carefully the first few lines in yourexceptionstack: Binary XML file line #25: You must supply a layout_height attribute. On Oct 8, 4:42 pm, Pankaj pankajiit...@gmail.com wrote: Hi all, I get anexceptioneverytimeIlaunchtheapplication. Here is the stacktrace for theexception 10-01 14:49:35.321: WARN/WindowManager(61):Exceptionwhen adding starting window 10-01 14:49:35.321: WARN/WindowManager(61): java.lang.RuntimeException: Binary XML file line #25: You must supply a layout_height attribute. 10-01 14:49:35.321: WARN/WindowManager(61): at android.content.res.TypedArray.getLayoutDimension(TypedArray.java:438) 10-01 14:49:35.321: WARN/WindowManager(61): at android.view.ViewGroup$LayoutParams.setBaseAttributes(ViewGroup.java: 3468) 10-01 14:49:35.321: WARN/WindowManager(61): at android.view.ViewGroup$MarginLayoutParams.init(ViewGroup.java:3547) 10-01 14:49:35.321: WARN/WindowManager(61): at android.widget.LinearLayout$LayoutParams.init(LinearLayout.java: 1265) 10-01 14:49:35.321: WARN/WindowManager(61): at android.widget.LinearLayout.generateLayoutParams(LinearLayout.java: 1191) 10-01 14:49:35.321: WARN/WindowManager(61): at android.widget.LinearLayout.generateLayoutParams(LinearLayout.java:45) 10-01 14:49:35.321: WARN/WindowManager(61): at android.view.LayoutInflater.rInflate(LayoutInflater.java:620) 10-01 14:49:35.321: WARN/WindowManager(61): at android.view.LayoutInflater.inflate(LayoutInflater.java:407) 10-01 14:49:35.321: WARN/WindowManager(61): at android.view.LayoutInflater.inflate(LayoutInflater.java:320) 10-01 14:49:35.321: WARN/WindowManager(61): at android.view.LayoutInflater.inflate(LayoutInflater.java:276) 10-01 14:49:35.321: WARN/WindowManager(61): at com.android.internal.policy.impl.PhoneWindow.generateLayout(PhoneWindow.java: 2153) 10-01 14:49:35.321: WARN/WindowManager(61): at com.android.internal.policy.impl.PhoneWindow.installDecor(PhoneWindow.java: 2207) 10-01 14:49:35.321: WARN/WindowManager(61): at com.android.internal.policy.impl.PhoneWindow.getDecorView(PhoneWindow.java: 1395) 10-01 14:49:35.321: WARN/WindowManager(61): at com.android.internal.policy.impl.PhoneWindowManager.addStartingWindow(PhoneWindowManager.java: 818) 10-01 14:49:35.321: WARN/WindowManager(61): at com.android.server.WindowManagerService $H.handleMessage(WindowManagerService.java:8794) 10-01 14:49:35.321: WARN/WindowManager(61): at android.os.Handler.dispatchMessage(Handler.java:99) 10-01 14:49:35.321: WARN/WindowManager(61): at android.os.Looper.loop(Looper.java:123) 10-01 14:49:35.321: WARN/WindowManager(61): at com.android.server.WindowManagerService $WMThread.run(WindowManagerService.java:531) I am also posting the XML files I'm using. ?xml version=1.0 encoding=utf-8? RelativeLayout xmlns:android=http://schemas.android.com/apk/res/ android android:id=@+id/arw_layout android:orientation=horizontal android:layout_width=fill_parent android:layout_height=wrap_content ImageView android:id=@+id/arw_logo android:layout_width=30px android:layout_height=40px android:layout_alignParentRight=true / LinearLayout xmlns:android=http://schemas.android.com/apk/res/ android android:orientation=horizontal android:layout_width=fill_parent android:layout_height=wrap_content android:gravity=center android:layout_alignParentLeft=true TextView android:id=@+id/arw_left android:layout_width=wrap_content android:layout_height=wrap_content android:text=@string/ arw_left android:textSize=25sp android:paddingLeft=10dp android:paddingRight=10dp android:gravity=center_vertical / TextView android:id=@+id/arw_title android:layout_width=wrap_content android:layout_height=wrap_content android:minEms=10 android:text=@string/arw_title android:paddingLeft=10dp android:paddingRight=10dp android:gravity=center / TextView android:id=@+id/arw_right android:layout_width=wrap_content android:layout_height
[android-developers] Re: Exception every time I launch the application
Also keep in mind that one occasionally slips up (or Eclipse slips up) and the project is not rebuilt before running. Or you can simply forget which XML is which. Try rebuilding, and verify for yourself which XML is being used for which screen. On Oct 9, 5:01 pm, Pankaj pankajiit...@gmail.com wrote: Ya I got that much from the exception, But in which XML ? I could not figure that out that is why I have provided the xml files On Oct 9, 4:00 am, DanH danhi...@ieee.org wrote: Speak of the devil! (Just had this problem myself.) Read carefully the first few lines in yourexceptionstack: Binary XML file line #25: You must supply a layout_height attribute. On Oct 8, 4:42 pm, Pankaj pankajiit...@gmail.com wrote: Hi all, I get anexceptioneverytimeIlaunchtheapplication. Here is the stacktrace for theexception 10-01 14:49:35.321: WARN/WindowManager(61):Exceptionwhen adding starting window 10-01 14:49:35.321: WARN/WindowManager(61): java.lang.RuntimeException: Binary XML file line #25: You must supply a layout_height attribute. 10-01 14:49:35.321: WARN/WindowManager(61): at android.content.res.TypedArray.getLayoutDimension(TypedArray.java:438) 10-01 14:49:35.321: WARN/WindowManager(61): at android.view.ViewGroup$LayoutParams.setBaseAttributes(ViewGroup.java: 3468) 10-01 14:49:35.321: WARN/WindowManager(61): at android.view.ViewGroup$MarginLayoutParams.init(ViewGroup.java:3547) 10-01 14:49:35.321: WARN/WindowManager(61): at android.widget.LinearLayout$LayoutParams.init(LinearLayout.java: 1265) 10-01 14:49:35.321: WARN/WindowManager(61): at android.widget.LinearLayout.generateLayoutParams(LinearLayout.java: 1191) 10-01 14:49:35.321: WARN/WindowManager(61): at android.widget.LinearLayout.generateLayoutParams(LinearLayout.java:45) 10-01 14:49:35.321: WARN/WindowManager(61): at android.view.LayoutInflater.rInflate(LayoutInflater.java:620) 10-01 14:49:35.321: WARN/WindowManager(61): at android.view.LayoutInflater.inflate(LayoutInflater.java:407) 10-01 14:49:35.321: WARN/WindowManager(61): at android.view.LayoutInflater.inflate(LayoutInflater.java:320) 10-01 14:49:35.321: WARN/WindowManager(61): at android.view.LayoutInflater.inflate(LayoutInflater.java:276) 10-01 14:49:35.321: WARN/WindowManager(61): at com.android.internal.policy.impl.PhoneWindow.generateLayout(PhoneWindow.java: 2153) 10-01 14:49:35.321: WARN/WindowManager(61): at com.android.internal.policy.impl.PhoneWindow.installDecor(PhoneWindow.java: 2207) 10-01 14:49:35.321: WARN/WindowManager(61): at com.android.internal.policy.impl.PhoneWindow.getDecorView(PhoneWindow.java: 1395) 10-01 14:49:35.321: WARN/WindowManager(61): at com.android.internal.policy.impl.PhoneWindowManager.addStartingWindow(PhoneWindowManager.java: 818) 10-01 14:49:35.321: WARN/WindowManager(61): at com.android.server.WindowManagerService $H.handleMessage(WindowManagerService.java:8794) 10-01 14:49:35.321: WARN/WindowManager(61): at android.os.Handler.dispatchMessage(Handler.java:99) 10-01 14:49:35.321: WARN/WindowManager(61): at android.os.Looper.loop(Looper.java:123) 10-01 14:49:35.321: WARN/WindowManager(61): at com.android.server.WindowManagerService $WMThread.run(WindowManagerService.java:531) I am also posting the XML files I'm using. ?xml version=1.0 encoding=utf-8? RelativeLayout xmlns:android=http://schemas.android.com/apk/res/ android android:id=@+id/arw_layout android:orientation=horizontal android:layout_width=fill_parent android:layout_height=wrap_content ImageView android:id=@+id/arw_logo android:layout_width=30px android:layout_height=40px android:layout_alignParentRight=true / LinearLayout xmlns:android=http://schemas.android.com/apk/res/ android android:orientation=horizontal android:layout_width=fill_parent android:layout_height=wrap_content android:gravity=center android:layout_alignParentLeft=true TextView android:id=@+id/arw_left android:layout_width=wrap_content android:layout_height=wrap_content android:text=@string/ arw_left android:textSize=25sp android:paddingLeft=10dp android:paddingRight=10dp android:gravity=center_vertical / TextView android:id=@+id/arw_title android:layout_width=wrap_content android:layout_height=wrap_content android:minEms=10 android:text=@string/arw_title android:paddingLeft=10dp android:paddingRight=10dp android:gravity=center / TextView android:id=@+id/arw_right android:layout_width=wrap_content android:layout_height=wrap_content android:text=@string/ arw_right android:textSize=25sp android:paddingLeft=10dp
[android-developers] Re: Wierd memory leak
Well, I would hope that the Java threadsafe classes are still threadsafe. But essentially none of the UI is, and the structure of the system greatly discourages sharing data between threads. On Oct 8, 5:00 am, Daniel Drozdzewski daniel.drozdzew...@gmail.com wrote: On Thu, Oct 7, 2010 at 6:40 PM, DanH danhi...@ieee.org wrote: Right. The main difference is that StringBuffer is threadsafe, and nothing else in Android is threadsafe, so little point in using StringBuffer. Well, there are few places, where Java (Android) are thread safe (Vector, Stack, few classes in javax.nio.* and quite few classes in java.util.concurrent.*) If String modification is happening by multiple actors (user generated events, network) then it makes sense using StringBuffer. (That said, the performance edge of StringBuilder over StringBuffer is unlikely to be noticed.) True -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: How to convert xml to svg in Android
Rename it from .xml to .svg? (Of course, this will only work if it's the valid XML for an SVG image.) On Oct 8, 2:12 am, 大风 jindafeng2...@gmail.com wrote: How to convert xml to svg in Android, Anybody anyideas? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Possible to check .apk signature?
What I mean is that if the bad actor can manipulate the apk bytes while still maintaining the same checksum, then the whole scheme is insecure -- there's no point in having it signed. A CRC32 checksum is easily spoofed -- the apk bytes need to be checksummed with a cryptographic checksum of some sort. On Oct 8, 1:01 am, Dianne Hackborn hack...@android.com wrote: On Thu, Oct 7, 2010 at 6:22 PM, DanH danhi...@ieee.org wrote: So what is protecting the application from forgery? What do you mean? This is the cert it is signed with. Do you have some way to force the cert? -- Dianne Hackborn Android framework engineer hack...@android.com Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
