[android-beginners] Re: database
You can build the database on any platform (perhaps using a tool like SQLite Expert) and upload it to Android. The trick is that you have get it from wherever you upload it into the app's database directory (plus add a few extra records that Android wants). Some info here: http://www.reigndesign.com/blog/using-your-own-sqlite-database-in-android-applications/ On Aug 8, 10:59 am, Tanay M. Kapoor tmkap...@gmail.com wrote: i need to add a large amount of data to an android database i have created. Is there any tool i can use to do this instead of making an activity to write and manually add the data. My application need only display the data not add new thigns to the datdbase. Please help... -- You received this message because you are subscribed to the Google Groups Android Beginners group. ATTENTION: Android-Beginners will be permanently disabled on August 9 2010. For more information about this change, please read [http://goo.gl/xkfl] or visit the Group home page. Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Farewell, we hardly knew ye
May it rest in peace. -- You received this message because you are subscribed to the Google Groups Android Beginners group. ATTENTION: Android-Beginners will be permanently disabled on August 9 2010. For more information about this change, please read [http://goo.gl/xkfl] or visit the Group home page. Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: SQLiteConstraintException: error code 19: constraint failed when deleting from sqlite
SELECT RAISE(FAIL,'album has songs cannot be deleted')); On Jul 29, 5:43 am, manigault manig...@gmail.com wrote: Hi all, i have simple relation between songs and albums one to many. I created the album table like this CREATE TABLE albums (id INTEGER PRIMARY KEY ASC, name TEXT, additional TEXT) My song table is like this StringBuilder sqlQuery = new StringBuilder(); CREATE TABLE songs (id INTEGER PRIMARY KEY ASC, album_fk INTEGER NOT NULL, title TEXT, url TEXT, duration BIGINT NOT NULL) and i have trigger to check when i wan't to delete an album if there are songs in it CREATE TRIGGER trigger_on_delete BEFORE DELETE ON albums FOR EACH ROW BEGIN SELECT RAISE(FAIL,'album has songs cannot be deleted')); WHERE (SELECT album_fk FROM songs WHERE album_fk = OLD.id) IN NOT NULL;) END and everything is ok and its working fine. But sometimes i got this error Exception: android.database.sqlite.SQLiteConstraintException: error code 19: constraint failed Stack Trace : android.database.sqlite.SQLiteStatement.native_execute(Native Method) android.database.sqlite.SQLiteStatement.execute(SQLiteStatement.java: 66) when i am trying to delete an album. I know what #define SQLITE_CONSTRAINT 19 /* Abort due to constraint violation */ stands for but i can't what constraints can be violated when deleting an album. I can't reproduce this so i can't debug it to find out what's the problem any ideas what could go wrong and cause such error. I've tried playing with string encoding but i think that's not the problem. -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: InstantiationException when starting IntentService
InstantiationException occurs when an exception is thrown out of a
constructor. Generally there should be another exception reported as
causing the InstantiationException, and the stack trace should point
to the specific lines that are in error. Stack trace is your friend,
and you should be grateful -- their are poor children programming on
Symbian devices who have no stack trace.
On Jul 29, 11:24 am, Wall-E bashee...@gmail.com wrote:
I am trying to start an IntentService inside my Broadcast Receiver
( so inside of onReceive() ):
public class SmsMessageReceiver extends BroadcastReceiver
{
.
.
.
public void onReceive(.)
{
.
.
.
Intent mServiceIntent = new Intent(context,
SmsParserService.class );
mServiceIntent.putExtra(phoneNumber, fromAddress);
mServiceIntent.putExtra(smsMessage,
message.getMessageBody());
context.startService(mServiceIntent);
}
}
So if I change the IntentService class to a regular Service class,
although it has funny behavior, it still goes into the
onStartCommand(...) and onCreate() methods, but for the IntentService,
before going into any of those methods it throws an
InstantiationException and in the detailMessage it just says
com.tvismobile.SmsParserService which is what my Service is labeled
as in the Manifest file.
Is there something special you have to do to get IntentService
started?
Any help is appreciated.
--
You received this message because you are subscribed to the Google
Groups Android Beginners group.
NEW! Try asking and tagging your question on Stack Overflow at
http://stackoverflow.com/questions/tagged/android
To unsubscribe from this group, send email to
android-beginners+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Keeping some data in memory during onDestroy-onCreate
1) Display the values on the screen and have the user write them down. 2) Learn how to write to a file. 3) Use a constantly-running server to store them. On Jul 29, 10:37 am, Bret Foreman bret.fore...@gmail.com wrote: I want to monitor the velocity of a phone. I can do this by looking at accelerometer data over the last 30 seconds, saving about one sample every 0.1 seconds (300 samples) and applying a sliding filter to the data. If I create a service to do this, what's the best way to preserve the state of the filter (600 doubles) between an onDestroy and a subsequent onCreate? I can set up an SQLite table to hold the values but that's a lot of extra coding and processing overhead. Is there a better way? -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Unable to deploy apps to AVD using Eclipse
Looks like the app is loaded. See if you can find it through the
menu.
On Jul 27, 10:45 am, Abduaziz Hasan affa...@gmail.com wrote:
I give up
I tried and tried and tried but nothing is coming :(
this is the log from my Win7 machine:
___
[2010-07-27 18:12:47 - TestAnd] Android Launch!
[2010-07-27 18:12:47 - TestAnd] adb is running normally.
[2010-07-27 18:12:47 - TestAnd] Performing gosi.gest.Testme activity launch
[2010-07-27 18:12:47 - TestAnd] Automatic Target Mode: launching new
emulator with compatible AVD 'my_avd'
[2010-07-27 18:12:47 - TestAnd] Launching a new emulator with Virtual Device
'my_avd'
___
Ubuntu machine
___
[2010-07-27 08:40:05 - MyFirstAndroid] Android Launch!
[2010-07-27 08:40:05 - MyFirstAndroid] adb is running normally.
[2010-07-27 08:40:05 - MyFirstAndroid] Performing com.and.StartForm activity
launch
[2010-07-27 08:40:05 - MyFirstAndroid] Automatic Target Mode: launching new
emulator with compatible AVD 'my_avd'
[2010-07-27 08:40:05 - MyFirstAndroid] Launching a new emulator with Virtual
Device 'my_avd'
[2010-07-27 08:40:38 - MyFirstAndroid] New emulator found: emulator-5554
[2010-07-27 08:40:38 - MyFirstAndroid] Waiting for HOME
('android.process.acore') to be launched...
[2010-07-27 08:41:25 - MyFirstAndroid] WARNING: Application does not specify
an API level requirement!
[2010-07-27 08:41:25 - MyFirstAndroid] Device API version is 8 (Android 2.2)
[2010-07-27 08:41:25 - MyFirstAndroid] HOME is up on device 'emulator-5554'
[2010-07-27 08:41:25 - MyFirstAndroid] Uploading MyFirstAndroid.apk onto
device 'emulator-5554'
[2010-07-27 08:41:25 - MyFirstAndroid] Installing MyFirstAndroid.apk...
[2010-07-27 08:42:07 - MyFirstAndroid] Success!
[2010-07-27 08:42:07 - MyFirstAndroid] Starting activity com.and.StartForm
on device
[2010-07-27 08:42:10 - MyFirstAndroid] ActivityManager: Starting: Intent {
act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER]
cmp=com.and/.StartForm }
As you can see that the Win7 doesn't deploy the app.
On Tue, Jul 27, 2010 at 2:57 AM, Sam Hobbs s...@samhobbs.org wrote:
Evidently there are two versions of DEP; the earlier version is done using
software and a newer version that uses hardware. The hardware version exists
only in 64-bit processors and is used only by 64-bit Windows.
DEP can prevent code from being executed that is in memory designated as
data. It makes sense that a DEP would be a problem for a VM. DEP can be
enabled/disabled for specific processes.
I hope the following helps.
A description of the differences between 32-bit versions of Windows Vista
and 64-bit versions of Windows Vista
http://support.microsoft.com/kb/946765
Data Execution Prevention
http://msdn.microsoft.com/en-us/library/aa366553(VS.85).aspx
A detailed description of the Data Execution Prevention (DEP) feature in
Windows XP Service Pack 2, Windows XP Tablet PC Edition 2005, and Windows
Server 2003
http://support.microsoft.com/kb/875352
DanH wrote:
Note that a lot of things (like Data Execution Protection) appear to
be unique to the 64-bit version of Windoze, so folks with 32-bit
machines will have no problem.
--
You received this message because you are subscribed to the Google
Groups Android Beginners group.
NEW! Try asking and tagging your question on Stack Overflow at
http://stackoverflow.com/questions/tagged/android
To unsubscribe from this group, send email to
android-beginners+unsubscr...@googlegroups.comandroid-beginners%2bunsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-beginners?hl=en
--
You received this message because you are subscribed to the Google
Groups Android Beginners group.
NEW! Try asking and tagging your question on Stack Overflow at
http://stackoverflow.com/questions/tagged/android
To unsubscribe from this group, send email to
android-beginners+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: problem with r,java
R.java should be in the gen directory of your project, and further nested (if you observe it in the file system) by the directories of your project path. If you installed the Android add-on for Eclipse R.java should be automatically created, but I don't recall if it's created immediately after you create the project, or during the first build you do. Of course, the R.java file is generated from the several files in the res directory, so if there's something wrong there it may not be generated. On Jul 26, 1:56 am, G Ganesh ganesh.in.andr...@gmail.com wrote: Hi, I am new to android. I am now familiar on how to create project and know what are the files that will b generated. I know that the file, r.java will be created automatically when a project is being created but i cant find r,java file when i create a new project.Witout creating this r.java i find more error on my code side. I even closed and opened the project several times and even closed and opened my eclipse IDE too but i could'nt find the way to it. I even tried with answer that came from forums but no way still i am fuzzing with it. I am using eclipse 3.5 pls give me the best of the answer and the reason too.Any help or reference is appreciated on this -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: JNI in android
You shouldn't have a void* in any of the JNI C interfaces. If you need a void* that Java code can pass around you should wrapper the value with a Java object. Callback would be handled with the invocation interface. On Jul 26, 1:26 am, sowmya ajaychalas...@gmail.com wrote: Hi I want to port c library in android for that i am writing native interface my c library contains generic pointers like void* .how can i define these in java jni files .do i need to define as byte[] and typecast in .cpp ? Also i want to know how to handle the callbacks from c library in jni -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Unable to deploy apps to AVD using Eclipse
Also, I have run Eclipse under Administrator role which in turn will invoke any process as trusted. Norton seems to mistrust Administrator stuff more than ordinary user stuff. Note that a lot of things (like Data Execution Protection) appear to be unique to the 64-bit version of Windoze, so folks with 32-bit machines will have no problem. On Jul 26, 1:10 pm, Abduaziz Hasan affa...@gmail.com wrote: @Sam Thank you for your support. I have tried different configurations and disabled the antivirus and the firewall though I doubt this is related to anyone of them. @DanH Yes that is right, but considering the large number of developers who are using the SDK without any problem leave me with one option and that is a problem with the configuration. BTW my antivirus is Avast home. Also, I have run Eclipse under Administrator role which in turn will invoke any process as trusted. Yet no results :( I will delete everything from my computer and start everything fresh as my Ubuntu is very slow under VMware. 2010/7/26 Kostya Vasilyev kmans...@gmail.com No problems with NOD32 here either. Running Windows 7 64bit. -- Kostya Vasilyev --http://kmansoft.wordpress.com 26.07.2010 1:10 пользователь Sam Hobbs s...@samhobbs.org написал: Many people have had problems with Norton. It was pre-installed in my system but I cleared it out of my system and installed Microsoft Security Essentials, which is free. I am not recommending anything except to say that I have had no problems that I am aware of related to AV software and I have not modified the installation of the AV software for Eclipse or the Android emulator or whatever. In my previous system, I used avast and I used various virtual systems and I had no problem with avast. DanH wrote: BTW, I'm using Norton Internet Security. I've turned off Insight, Antispy... -- You received this message because you are subscribed to the Google Groups Android Beginners gr... -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.comandroid-beginners%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Unable to deploy apps to AVD using Eclipse
Could be a problem with blanks in the path. Lots of tools have trouble with that, especially cross-platform tools. On Jul 25, 4:01 am, Abduaziz Hasan affa...@gmail.com wrote: Hi Kostya Actually, my whole OS is in English so this will eliminate the possibility. BTW, can this be related to Windows 7? I mean is there anyone who is using Windows 7 and not having the problem? Regards, On Sun, Jul 25, 2010 at 10:36 AM, Kostya Vasilyev kmans...@gmail.comwrote: Abduaziz, Does your Windows home directory have non-English characters? (C:\Users\your name)? I found that in this case (mine has Russian characters), the emulator has various problems. I use the command line to create the emulator in some other directory that has only English characters (e.g. android create avd -p D:\Android\emulators\avd_1.6_qvga). -- Kostya 25.07.2010 1:24, Abduaziz Hasan пишет: Dear DanH Thank you for your reply. When I first started my AVD I waited for some time until it was initialzed and I was at the home screen. The problem is that my app didn't deploy as I did the same on Ubuntu and it started the once the AVD was initialized. As for the second comment, it actually popped up once the AVD started under Ubuntu but not Windows. So this might be a Windows case. Thanx and regards, On Sat, Jul 24, 2010 at 11:26 PM, DanH danhi...@ieee.org wrote: First off, the first time you start an AVD after creating it you have to wait a VERY LONG TIME for it to configure itself completely. Secondly, I have found that, contrary to the docs, the application does not pop up of its own accord once loaded, but instead you have to press the Menu (I think) button. This may be something peculiar to my config, but I suspect it's dependent on the particular AVD you choose. On Jul 24, 1:35 pm, Abduaziz Hasan affa...@gmail.com wrote: Hi all, I am new to Android development and have a very long experience in Java technology development. When trying to develop for Android, using Eclipse and Android SDK, I have had a problems with deploying the apps, or simulating them, using the AVD. The problem is when I run the application, through Eclipse, the AVD device booted normally but my applications don't get deploy. I have tried to solve it by changing almost everything in the run configuration and the Android preference. I even deleted the Android SDK and installed it again but with no use. My environment setup is: - Windows 7 - Eclipse Helios - Android sdk r06 - Android plugin for Eclipse 0.9.7.v201 Now I have tried the same setup on Ubuntu 10.04 and it is working fine. Anyone had a similar problem? -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.comandroid-beginners%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -- Kostya Vasilev -- WiFi Manager + pretty widget --http://kmansoft.wordpress.com -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.comandroid-beginners%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Unable to deploy apps to AVD using Eclipse
Very good point. I find that most extra antivirus features must be turned off for most device emulators to function (and even some simple compile setups). Seems like AV software often suspects any code it's never seen before as being a virus, and obviously all the code you write falls into that category. So leave the firewall running, and the scheduled scan, but turn off all the live antivirus junk. On Jul 25, 9:47 am, Kostya Vasilyev kmans...@gmail.com wrote: Maybe... Why don't you try creating a new AVD using the command line, and make sure there are no spaces or non-english characters in its pathname? Also, do you run an antivirus? I use NOD32 and don't have any issues with it. Just for test purposes, you could try disabling yours. -- Kostya Vasilyev --http://kmansoft.wordpress.com 25.07.2010 18:42 пользователь Abduaziz Hasan affa...@gmail.com написал: One note: I am trying to deploy the app using the adb install command but I noticed that the adb didn't find the avd device that I created using eclipse. I tried to list the devices registered using adb devices but no device was found although I have one my_avd. Might this be the cause of the problem?? On Sun, Jul 25, 2010 at 5:24 PM, Abduaziz Hasan affa...@gmail.com wrote: My path doesn't e... -- You received this message because you are subscribed to the Google Groups Android Beginners gr... -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Android based application for healthcare
What you propose is complex but doable. For the pacemaker simulator, note that you should not try to control the pacemaker (too complex and too much liability) but should treat it as a read only source of information. (Though it's not entirely clear why you need a connection to the pacemaker at all.) Most modern units have an ability to communicate with an outside sensor (to read out incidents, etc), though likely this ability is turned off most of the time to conserve battery life -- a significant issue. The EMR sensor is something that you'd have to buy or invent. I'm no expert with EMR and don't know how complex such a device might be. It could be that developing a compact unit that is sensitive in the right bands (and won't be upset by ordinary cellphones and the like) will be difficult. And of course you have to connect the sensor to the phone somehow -- this has been done through the microphone input or through the removable memory chip interface in some cases. I don't know if there are any phones out there with more general I/O abilities. There's also the issue of battery life on the phone, since this would be a constant-running application. That could probably be easily fixed, though, with a piggyback battery. Finally, the sensitivity of pacemakers to EMR has been greatly reduced over the years, to where now it's not nearly the issue it was 20-30 years ago. So there's some question as to the market for your device. But it sounds like an idea worth pursuing a little further, at least. You'll learn a lot regardless of the outcome. On Jul 23, 9:34 pm, AAJ sethuraman.ak...@gmail.com wrote: hey all, We are graduate student, currently working on our masters project on an android platform for a healthcare domain. Since there are not many pacemaker reated applications on an android phone, we decided to work on the same. Our project scenario is something like this- Pacemaker patients are not suppose to get exposed to EMR affected areas. The pacemaker will immediately stop functioning if exposed to EMR. So our application will be alerting the patients based on the intensity of the EMR . So here, we will be using- 1. A pacemaker simulator which will periodically check the heartbeat and if the heart does not function properly, the pacemaker will regulate it. 2. The handset has an in-built sensor, which can sense the intensity of the EMR. 3. Also using Google maps we can pin the nearby locations which has high intensity EMR. Now, some of the things that we have to do- 1. Implement the pacemaker simulator, since we are not able to access the source code for the already available ones. 2. Implement the EMR sensor , to sense the EMR intensity. 3. Alert the patient as soon as he/she enters the danger zone. 4. Also show all the nearby EMR affected areas. Our questions are- 1. Is the project feasible ?? As a masters project can we go ahead and start working on this. 2. How do we find out all the EMr affected areas nearby ? Which means how do we connect Google maps API with the sensor program ?? It would be great if you could help us out with these questions. We are really looking forward to working on an Android platform . Thanks AAJ. -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Windows 7 issue? gen [in HelloAndroid] does not exist
Have you tried manually creating the gen directory? It's worth a shot. On Jul 22, 10:28 am, Anil anil.r...@gmail.com wrote: I have been trying to get it up and running on Windows 7 but have had issues. Running Hello Android fails. Yes, I build, clean, build. Java 1.6.20, Eclipse 3.5.2, Windows 7 (it is 64 bit but I installed the 32 bit Java and 32 bit Eclipse). Error Log: !ENTRY org.eclipse.jdt.ui 4 10001 2010-07-22 09:16:32.010 !MESSAGE Internal Error !STACK 1 Java Model Exception: Java Model Status [gen [in HelloAndroid] does not exist] at org.eclipse.jdt.internal.core.JavaElement.newJavaModelException(JavaElement.java: 502) at org.eclipse.jdt.internal.core.Openable.generateInfos(Openable.java: 246) at org.eclipse.jdt.internal.core.JavaElement.openWhenClosed(JavaElement.java: 515) at org.eclipse.jdt.internal.core.JavaElement.getElementInfo(JavaElement.java: 252) at org.eclipse.jdt.internal.core.JavaElement.getElementInfo(JavaElement.java: 238) at org.eclipse.jdt.internal.core.PackageFragmentRoot.getKind(PackageFragmentRoot.java: 477) at org.eclipse.jdt.internal.ui.packageview.PackageExplorerContentProvider.processDelta(PackageExplorerContentProvider.java: 645) at org.eclipse.jdt.internal.ui.packageview.PackageExplorerContentProvider.handleAffectedChildren(PackageExplorerContentProvider.java: 791) at org.eclipse.jdt.internal.ui.packageview.PackageExplorerContentProvider.processDelta(PackageExplorerContentProvider.java: 734) at org.eclipse.jdt.internal.ui.packageview.PackageExplorerContentProvider.handleAffectedChildren(PackageExplorerContentProvider.java: 791) at org.eclipse.jdt.internal.ui.packageview.PackageExplorerContentProvider.processDelta(PackageExplorerContentProvider.java: 734) at org.eclipse.jdt.internal.ui.packageview.PackageExplorerContentProvider.elementChanged(PackageExplorerContentProvider.java: 124) at org.eclipse.jdt.internal.core.DeltaProcessor $3.run(DeltaProcessor.java:1557) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.jdt.internal.core.DeltaProcessor.notifyListeners(DeltaProcessor.java: 1547) at org.eclipse.jdt.internal.core.DeltaProcessor.firePostChangeDelta(DeltaProcessor.java: 1381) at org.eclipse.jdt.internal.core.DeltaProcessor.fire(DeltaProcessor.java: 1357) at org.eclipse.jdt.internal.core.DeltaProcessor.resourceChanged(DeltaProcessor.java: 1958) at org.eclipse.jdt.internal.core.DeltaProcessingState.resourceChanged(DeltaProcessingState.java: 470) at org.eclipse.core.internal.events.NotificationManager $2.run(NotificationManager.java:291) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java: 285) at org.eclipse.core.internal.events.NotificationManager.broadcastChanges(NotificationManager.java: 149) at org.eclipse.core.internal.resources.Workspace.broadcastPostChange(Workspace.java: 313) at org.eclipse.core.internal.resources.Workspace.aboutToBuild(Workspace.java: 244) at org.eclipse.core.internal.resources.Project$1.run(Project.java: 513) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java: 1800) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java: 1782) at org.eclipse.core.internal.resources.Project.internalBuild(Project.java: 502) at org.eclipse.core.internal.resources.Project.build(Project.java:94) at org.eclipse.ui.internal.ide.dialogs.CleanDialog.doClean(CleanDialog.java: 312) at org.eclipse.ui.internal.ide.dialogs.CleanDialog $1.runInWorkspace(CleanDialog.java:154) at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java: 38) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) !SUBENTRY 1 org.eclipse.jdt.core 4 969 2010-07-22 09:16:32.010 !MESSAGE gen [in HelloAndroid] does not exist -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Unable to deploy apps to AVD using Eclipse
First off, the first time you start an AVD after creating it you have to wait a VERY LONG TIME for it to configure itself completely. Secondly, I have found that, contrary to the docs, the application does not pop up of its own accord once loaded, but instead you have to press the Menu (I think) button. This may be something peculiar to my config, but I suspect it's dependent on the particular AVD you choose. On Jul 24, 1:35 pm, Abduaziz Hasan affa...@gmail.com wrote: Hi all, I am new to Android development and have a very long experience in Java technology development. When trying to develop for Android, using Eclipse and Android SDK, I have had a problems with deploying the apps, or simulating them, using the AVD. The problem is when I run the application, through Eclipse, the AVD device booted normally but my applications don't get deploy. I have tried to solve it by changing almost everything in the run configuration and the Android preference. I even deleted the Android SDK and installed it again but with no use. My environment setup is: - Windows 7 - Eclipse Helios - Android sdk r06 - Android plugin for Eclipse 0.9.7.v201 Now I have tried the same setup on Ubuntu 10.04 and it is working fine. Anyone had a similar problem? -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Android based application for healthcare
The cellphone does, in general, have a sensor that consists of the cellphone radio. This is, as I understand it, a multi-function radio that uses software techniques to simulate the electronics that would be present in a more conventional design, and it is in theory capable of all sorts of tricks. But that software is very complex and almost certainly not accessible to the app programmer, so you'd have very little chance of hijacking it to do your sensing, unless you could somehow get one of the phone engineers involved. And like I said, you DON'T want to control the pacemaker -- that will send any potential real investors running the other direction (BIG liability issues). At most you want to just passively read the unit. On Jul 24, 10:42 am, Akila Sethuraman sethuraman.ak...@gmail.com wrote: Thanks all for your inputs. But now, your answers have triggered some more questions- 1. Just like Mr.Dan has proposed, we are planning to implement a simple pacemaker. Its basic function would be to periodically check the heartbeat and see if it is irregular. If the heartbeat is say 50 per minute, then the pacemaker would regulate it to 72 . Isn't that sufficient ?? 2. Also, i would like to know, why do i need an external sensor. Most of the cellphones do have a sensor in-built which can sense the EMR. So, in that case , cant I use the in-built sensor ?? Thanks for your time and suggestions. On Sat, Jul 24, 2010 at 7:37 AM, Bret Foreman bret.fore...@gmail.comwrote: As for connecting sensors to the phone, your best bet will be USB based sensors. Almost the entire sensor market has gone over to these devices because of their easy connection to PCs. The only hitch will be getting access to the hardware I/O specifications of the sensor so you can talk to it. Most sensor companies provide ready-made software and don't publish the I/O specs. You'll need to find one who is willing to work with you. The good news is that there are many of them out there and they are hungry to get their hardware into new applications. As for the specific sensor, you need to get a physicist involved in your project. The human body is mostly water and the penetration of radio waves is inversely related to frequency. This is well studied and will tell you which bands are going to concern your system. The good news is that low frequencies (the most penetrating) are easy to demodulate with modern high speed A/D systems (like the ones you will have in your USB sensor). You need to get a signal processing expert to help you with that part but modern Android phones have enough processing power to handle the task, as I've found in my own work. You'll also need some analog electronics for the front end to boost the signal enough to demodulate it. Get an electrical engineer to help you with that. Overall it sounds like a fun project. In general, I recommend consulting experts whenever you can rather than stumbling around. Most are very generous with their time when helping students. Good luck, and let me know if you get the system working well enough for a demo. I know a huge number of venture capitalists who are always on the lookout for investment opportunities. -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.comandroid-beginners%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -- Regards, Akila -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Android based application for healthcare
Yeah, I completely forgot about USB. On some (non-Android) phones it's not accessible to the app, so it didn't come to mind. On Jul 24, 9:37 am, Bret Foreman bret.fore...@gmail.com wrote: As for connecting sensors to the phone, your best bet will be USB based sensors. Almost the entire sensor market has gone over to these devices because of their easy connection to PCs. The only hitch will be getting access to the hardware I/O specifications of the sensor so you can talk to it. Most sensor companies provide ready-made software and don't publish the I/O specs. You'll need to find one who is willing to work with you. The good news is that there are many of them out there and they are hungry to get their hardware into new applications. As for the specific sensor, you need to get a physicist involved in your project. The human body is mostly water and the penetration of radio waves is inversely related to frequency. This is well studied and will tell you which bands are going to concern your system. The good news is that low frequencies (the most penetrating) are easy to demodulate with modern high speed A/D systems (like the ones you will have in your USB sensor). You need to get a signal processing expert to help you with that part but modern Android phones have enough processing power to handle the task, as I've found in my own work. You'll also need some analog electronics for the front end to boost the signal enough to demodulate it. Get an electrical engineer to help you with that. Overall it sounds like a fun project. In general, I recommend consulting experts whenever you can rather than stumbling around. Most are very generous with their time when helping students. Good luck, and let me know if you get the system working well enough for a demo. I know a huge number of venture capitalists who are always on the lookout for investment opportunities. -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Why it is so difficult to generate gen file
To help others, you should say what you found (if it's not too embarrassing). On Jul 22, 1:15 am, Shaista Naaz shaistanaa...@gmail.com wrote: Hey Hi, I got it up and running. Thanks, Shaista On Thu, Jul 22, 2010 at 11:34 AM, Shaista Naaz shaistanaa...@gmail.comwrote: Hi, I am a beginner trying to learn Android. I am trying to run Hello Android sample code but am facing one problem with generation of gen file. Sometimes it works after I do repeated clean, rebuild and build automatically on and off. I have installed android-sdk_r06-windows, eclipse-java-galileo-win32 and jdk-6u21-windows-i586. While creating Hello Android I am selecting Android 1.1 as SDK. I have given PATH variable of SDK only not for java. And I am working on Windows. If my simple Hello Android succeeds in generating R.java and then I make any changes in the main.xml and string.xml then again gen cannot be created. I am following file file:///D:/Android/android-sdk_r06-windows/android-sdk-windows/docs/resources/tutorials/hello-world.html Any help is highly appreciated. Thanks, Shaista -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Updating XML files
I think the best approach is to read it in as a Document and operate on that with xpath stuff. Not good for large documents, but reasonable for medium/small ones. On Jul 21, 7:31 am, Emmen Farooq farooq.em...@gmail.com wrote: Hi all and thank you for all your help , I have understood SAX parser and got it to work to read xml file , and have understood the concept of Xstrem for creating xml files , but Im null with the concept of updating only a certain part of an xml file with android , i mean a file exists and I wd like to update only a certain tag , any help would be appreciated many thanks indeed -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: updating an xml file
This is probably a job for DOM. On Jul 20, 2:08 am, Emmen Farooq farooq.em...@gmail.com wrote: I have an xml file on my hard drive, that already has and element name , now when I change it through the application I want it to be written to the xml , i.e. the name is updated in the xml , when the user changes it in the aplication , please help / advise ? -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: stubborn error wont go away
Yeah, same here, but they are handy in some cases.
On Jul 19, 11:18 pm, Justin Anderson janderson@gmail.com wrote:
* Yeah, the ability to define a class inline like that is a very powerful
feature of Java, but it can be very confusing since the {}
and () get nested so deeply and get so distantly separated.
*
Personally, I tend to avoid inline classes for that very reason...
--
There are only 10 types of people in the world...
Those who know binary and those who don't.
--
On Mon, Jul 19, 2010 at 5:17 PM, DanH danhi...@ieee.org wrote:
Yeah, the ability to define a class inline like that is a very
powerful feature of Java, but it can be very confusing since the {}
and () get nested so deeply and get so distantly separated.
On Jul 19, 1:31 pm, Justin Anderson janderson@gmail.com wrote:
Your call to setOnClickListener is missing a closing parentheses... which
is
why you get the error telling you to insert one.
--
There are only 10 types of people in the world...
Those who know binary and those who don't.
--
On Mon, Jul 19, 2010 at 12:18 PM, martinmike2 martinmi...@gmail.com
wrote:
I should probably give some info background here.
The code is listening for a button click to call a private function
searched(String sTERM).
Im just starting app development and learning java at the same time.
not sure what im doing wrong.
--
You received this message because you are subscribed to the Google
Groups Android Beginners group.
NEW! Try asking and tagging your question on Stack Overflow at
http://stackoverflow.com/questions/tagged/android
To unsubscribe from this group, send email to
android-beginners+unsubscr...@googlegroups.comandroid-beginners%2bunsubscr...@googlegroups.com
android-beginners%2bunsubscr...@googlegroups.comandroid-beginners%252bunsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-beginners?hl=en
--
You received this message because you are subscribed to the Google
Groups Android Beginners group.
NEW! Try asking and tagging your question on Stack Overflow at
http://stackoverflow.com/questions/tagged/android
To unsubscribe from this group, send email to
android-beginners+unsubscr...@googlegroups.comandroid-beginners%2bunsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-beginners?hl=en
--
You received this message because you are subscribed to the Google
Groups Android Beginners group.
NEW! Try asking and tagging your question on Stack Overflow at
http://stackoverflow.com/questions/tagged/android
To unsubscribe from this group, send email to
android-beginners+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Eclipse: Easy way to refactor/rename package?
Do you have Rename under File? I'm pretty sure it's the same function. Just highlight the project to rename that, the package to rename that. On Jul 19, 1:50 pm, Nick Richardson richardson.n...@gmail.com wrote: Xavier, I had read about that option while searching around... but i do not have that option under Android Tools. I've checked for updates of the plugin through Eclipse and it appears that i am running the latest version (Android Development Tools 0.9.7.v201005071157-36220). Is there a newer version than this? If so, Eclipse doesn't want to grab it fromhttps://dl-ssl.google.com/android/eclipse/. Is it possible that the rename option is not available on a Mac? (I doubt it). Is there a specific version of ADT that i need in order to have this option show up? The options i have available under Android Tools are: * New Test Project * New Resource File * Export Signed Application Package * Export Unsigned Application Package * Fix Project Properties On Mon, Jul 19, 2010 at 11:12 AM, Xavier Ducrohet x...@android.com wrote: - Right click project - Choose Android Tools Rename application package This will go and change everything that needs changing. Now, for your specific case of having 2 versions of your app, I recommend splitting your project in a common library and 2 applications projects. See here for more details: http://developer.android.com/guide/developing/eclipse-adt.html#librar... On Mon, Jul 19, 2010 at 10:55 AM, Nick Richardson richardson.n...@gmail.com wrote: Thanks for the replies, I did use the refactor option to rename the package and the project, but then there were a few updates that were needed in the manifest, and one other place i can't remember now. I was simply wondering if there was an automated way to make all these changes at once using the ADT plugin, or if i was going to have to do this manually every time i have an update to my app. //Nick On Sun, Jul 18, 2010 at 10:47 AM, Mark H. Nichols code.pr...@gmail.com wrote: On Jul 18, 2010, at 3:41 AM, Nick Richardson wrote: Hopefully simple question: I would like to create a second copy of my app and release it as a free version. I have copied my project to a new one in eclipse, but now i would like to rename the project and package to upload to the market. Is there an easy way using ADT or otherwise that will do this for me? I found a few posts online with reference to right clicking the project and selecting Rename from Android Tools, but i do not have that option. If there's not an automated way, what are the steps i need to be sure to take to insure that everything is renamed correctly before i upload? If you are using Eclipse, you can use the Refactor tool to do what you want. Right-click on the project to be renamed, select Refactor from the object menu, and then rename from there. Mark -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.comandroid-beginners%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -- //Nick Richardson //richardson.n...@gmail.com -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.comandroid-beginners%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -- Xavier Ducrohet Android SDK Tech Lead Google Inc. Please do not send me questions directly. Thanks! -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.comandroid-beginners%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -- //Nick Richardson //richardson.n...@gmail.com -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at
[android-beginners] Re: stubborn error wont go away
Yeah, the ability to define a class inline like that is a very
powerful feature of Java, but it can be very confusing since the {}
and () get nested so deeply and get so distantly separated.
On Jul 19, 1:31 pm, Justin Anderson janderson@gmail.com wrote:
Your call to setOnClickListener is missing a closing parentheses... which is
why you get the error telling you to insert one.
--
There are only 10 types of people in the world...
Those who know binary and those who don't.
--
On Mon, Jul 19, 2010 at 12:18 PM, martinmike2 martinmi...@gmail.com wrote:
I should probably give some info background here.
The code is listening for a button click to call a private function
searched(String sTERM).
Im just starting app development and learning java at the same time.
not sure what im doing wrong.
--
You received this message because you are subscribed to the Google
Groups Android Beginners group.
NEW! Try asking and tagging your question on Stack Overflow at
http://stackoverflow.com/questions/tagged/android
To unsubscribe from this group, send email to
android-beginners+unsubscr...@googlegroups.comandroid-beginners%2bunsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-beginners?hl=en
--
You received this message because you are subscribed to the Google
Groups Android Beginners group.
NEW! Try asking and tagging your question on Stack Overflow at
http://stackoverflow.com/questions/tagged/android
To unsubscribe from this group, send email to
android-beginners+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Eclipse: Easy way to refactor/rename package?
File - Rename? You might have to do it twice -- once on the project and once on the package. On Jul 18, 3:41 am, Nick Richardson richardson.n...@gmail.com wrote: Hopefully simple question: I would like to create a second copy of my app and release it as a free version. I have copied my project to a new one in eclipse, but now i would like to rename the project and package to upload to the market. Is there an easy way using ADT or otherwise that will do this for me? I found a few posts online with reference to right clicking the project and selecting Rename from Android Tools, but i do not have that option. If there's not an automated way, what are the steps i need to be sure to take to insure that everything is renamed correctly before i upload? Thanks, -- //Nick Richardson //richardson.n...@gmail.com -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Eclipse: Easy way to refactor/rename package?
As for steps to insure everything is renamed correctly, that would be a clean, build, and thorough test -- what you should be doing anyway, of course. On Jul 18, 3:41 am, Nick Richardson richardson.n...@gmail.com wrote: Hopefully simple question: I would like to create a second copy of my app and release it as a free version. I have copied my project to a new one in eclipse, but now i would like to rename the project and package to upload to the market. Is there an easy way using ADT or otherwise that will do this for me? I found a few posts online with reference to right clicking the project and selecting Rename from Android Tools, but i do not have that option. If there's not an automated way, what are the steps i need to be sure to take to insure that everything is renamed correctly before i upload? Thanks, -- //Nick Richardson //richardson.n...@gmail.com -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Java Keyword This and Button Listeners.
Well, that's not exactly it. The pointer is needed in setOnClickListener to distinguish that specific instance of the listener class from the thousand other possible instances in the machine. You'll find the analogous pointer in C++ based systems, eg. And note that it need not be this. One might very well do: MyListenerClass listener = new MyListenerClass(some args); someWidget.setOnClickListener(listener); On Jul 18, 4:53 pm, Sam Hobbs s...@samhobbs.org wrote: I am new to Java, but since Justin says that the this reference is essentially the same as in C++ and C# I hope my comments are helpful. I think one point that was not made clear is that the operating system (Android, Linux or whatever) is not written in Java but if it was written in Java it would need to call event handlers in a manner that is independent of the language. So when Android calls the setOnClickListener event handler, it does not have a this reference and could not call the event handler with this even if it knew what this is. So it is quite common to pass the this as an argument so the event handler can access the other members of it's class. Keith Roberts wrote: Hey all, I know that the keyword this refers to an instance variable or can invoke a constructor, but I don't understand how passing this as the arg for setOnClickListener () works?Could someone explain? Thanks, keith -- Sam Hobbs Los Angeles, CA -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Java Keyword This and Button Listeners.
I apologize that I don't know what the Java term is that corresponds with the C++ term static The Java term is static. Both setOnClickListener and the listener's method onClick are instance methods, not static ones. The argument to setOnClickListener is the reference of (pointer to) the object instance that implements onClick. In some cases it's convenient for that to be the current class, but in other cases not. this has no special significance in the setOnClickListener invocation -- no different from any other reference that might be supplied. It simply refers to the current instance in cases where that's the way the programmer wants to do it. I've been programming in C++ for 14 years. Was the lead designer/ developer for the Java implementation in IBM iSeries (which was written in C++). I kinda know both languages pretty well. On Jul 18, 7:51 pm, Sam Hobbs s...@samhobbs.org wrote: Except the original question is about this and why it works to use it as an argument. My comments explain why the this is missing when an event handler is called. I apologize that I don't know what the Java term is that corresponds with the C++ term static, but in C++ the this pointer is the only difference between a static and a non-static function. Providing the this pointer in C++ as an argument for a static function allows the event handler to do everything that a non-static function does except the static function must use the this pointer to qualify references to the class. Perhaps I misunderstand what you are saying; are you saying that it is possible to pass something else in the argument other than the this reference? If so then that is not inconsistent with what I said or meant to say, but the question was about the this reference. DanH wrote: Well, that's not exactly it. The pointer is needed in setOnClickListener to distinguish that specific instance of the listener class from the thousand other possible instances in the machine. You'll find the analogous pointer in C++ based systems, eg. And note that it need not be this. One might very well do: MyListenerClass listener = new MyListenerClass(some args); someWidget.setOnClickListener(listener); On Jul 18, 4:53 pm, Sam Hobbss...@samhobbs.org wrote: I am new to Java, but since Justin says that the this reference is essentially the same as in C++ and C# I hope my comments are helpful. I think one point that was not made clear is that the operating system (Android, Linux or whatever) is not written in Java but if it was written in Java it would need to call event handlers in a manner that is independent of the language. So when Android calls the setOnClickListener event handler, it does not have a this reference and could not call the event handler with this even if it knew what this is. So it is quite common to pass the this as an argument so the event handler can access the other members of it's class. Keith Roberts wrote: Hey all, I know that the keyword this refers to an instance variable or can invoke a constructor, but I don't understand how passing this as the arg for setOnClickListener () works?Could someone explain? Thanks, keith -- Sam Hobbs Los Angeles, CA -- Sam Hobbs Los Angeles, CA -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Including libraries in project
That's not been my impression, and when I browse an Android class file with a hex editor it says CAFEBABE. On Jul 16, 11:48 pm, kypriakos demet...@ece.neu.edu wrote: So it is fair to say = Android bytecode != 3rd party code bytecode (particularly from IBM or SUN or Axis)? So the reason I am not seeing the libraries (which otherwise helped me compile my imported app in Eclipse) in the apk file is because they are not recognized by the Android platform? Unless I obtain the source code for all those libs and try to compile and fix the millions of errors that will probably appear, I won't be able to use them? Is that a fair statement? Oh o ... Thanks On Jul 16, 4:31 pm, kypriakos demet...@ece.neu.edu wrote: Hi all, I managed to compile the imported application (the trick was not to just throw the lib directory in the project but to also build a library out of the jars and present that in the project class path). However, I am noticing in DDMS (and in debug perspective) when I launch the app that one of the threads quits and complains that: Failed resolving Lcom/myApp/PeerToPeerAdapter: interface 211 Lnet/ wlib/PeerGen. I can see the net/lib/PeerGen in the jar files included in the library that is in the classpath. Afterall it compiles fine. Why does it complain at runtime? Doesn't the Android plugin package what it needs in the dex, apk and res_ files before it deploys the app in the emulator? I could not find anything on this in the resources so I am wondering if anyone had this issue before - It could be trivial and I am missing something very obvious. Thanks -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Including libraries in project
It seems a little odd that Android is supposedly open, yet Dalvik is essentially undocumented. On Jul 17, 8:13 am, Kostya Vasilyev kmans...@gmail.com wrote: During compilation, Android tools use standard Java .class format, as you found out. However, during application packaging (I think) they are converted into Dalvik's special format, .dex, which does not use Sun's Java bytecode. If you list the contents of an .apk file, you will see one .dex file instead of multiple .class files, as would be the case with a regular Java application. http://en.wikipedia.org/wiki/Dalvik_(software) -- Kostya 17.07.2010 17:06, DanH пишет: That's not been my impression, and when I browse an Android class file with a hex editor it says CAFEBABE. On Jul 16, 11:48 pm, kypriakosdemet...@ece.neu.edu wrote: So it is fair to say = Android bytecode != 3rd party code bytecode (particularly from IBM or SUN or Axis)? So the reason I am not seeing the libraries (which otherwise helped me compile my imported app in Eclipse) in the apk file is because they are not recognized by the Android platform? Unless I obtain the source code for all those libs and try to compile and fix the millions of errors that will probably appear, I won't be able to use them? Is that a fair statement? Oh o ... Thanks On Jul 16, 4:31 pm, kypriakosdemet...@ece.neu.edu wrote: Hi all, I managed to compile the imported application (the trick was not to just throw the lib directory in the project but to also build a library out of the jars and present that in the project class path). However, I am noticing in DDMS (and in debug perspective) when I launch the app that one of the threads quits and complains that: Failed resolving Lcom/myApp/PeerToPeerAdapter: interface 211 Lnet/ wlib/PeerGen. I can see the net/lib/PeerGen in the jar files included in the library that is in the classpath. Afterall it compiles fine. Why does it complain at runtime? Doesn't the Android plugin package what it needs in the dex, apk and res_ files before it deploys the app in the emulator? I could not find anything on this in the resources so I am wondering if anyone had this issue before - It could be trivial and I am missing something very obvious. Thanks -- Kostya Vasilev -- WiFi Manager + pretty widget --http://kmansoft.wordpress.com -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Java Keyword This and Button Listeners.
setOnClickListener takes a reference (pointer) to an object as its
argument. That object must implement the onClick() method. So when a
click occurs, the onClick method of that object (that specific
instance of that class) is called. Using this just directs that the
onClick method of the current object be used if a click occurs.
Another way to understand this:
public class MyClass {
public void myMethod(Object someObj) {
if (someObj == this) {
System.out.println(someObj == this);
}
else {
System.out.println(someObj != this);
}
}
public class MyOtherClass {
public void doSomething() {
MyClass theInstance = new MyClass();
MyClass notTheInstance = new MyClass();
theInstance -myMethod(theInstance); // This will print ==
theInstance -myMethod(notTheInstance); // This will print !=
theInstance -myMethod(this); // This will print !=
}
}
On Jul 16, 2:43 pm, Keith Roberts keithr...@gmail.com wrote:
setOnClickListener actually takes the callback method that will be
invoked when the user presses the button interface as an argument, so
it doesn't take a view Basically you're saying this is just a
reference to the current object you're in. So if you're in a specific
method and you use this, it tells the complier to pass in class
variables not the local ones because the instance of the class would
be outside of the method?? also, if your class contains multiple
instances how does the complier know which one this is referring
too?
On Jul 13, 1:47 am, Justin Anderson janderson@gmail.com wrote:
* I know that the keyword this refers to an instance variable or can
invoke a constructor*
That is not what the keyword this references. It references the instance
of the class you are currently in...
* but I don't understand how passing this as the arg for
setOnClickListener () works?Could someone explain?*
Take a look at the argument list for setOnClickListener... One of the
arguments is probably a View. So, when you are calling setOnClickListener
and you are in a class that inherits View, you pass this because this
is-a View instance. It wouldn't work if you were calling setOnClickListener
from a class that didn't eventually inherit from View.
Hope that helps... sounds to me like you may want to brush up a little bit
on Java.
--
There are only 10 types of people in the world...
Those who know binary and those who don't.
--
On Mon, Jul 12, 2010 at 8:50 PM, Keith Roberts keithr...@gmail.com wrote:
Hey all,
I know that the keyword this refers to an instance variable or can
invoke a constructor, but I don't understand how passing this as the
arg for setOnClickListener () works?Could someone explain?
Thanks,
keith
--
You received this message because you are subscribed to the Google
Groups Android Beginners group.
NEW! Try asking and tagging your question on Stack Overflow at
http://stackoverflow.com/questions/tagged/android
To unsubscribe from this group, send email to
android-beginners+unsubscr...@googlegroups.comandroid-beginners%2Bunsubscr
i...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-beginners?hl=en
--
You received this message because you are subscribed to the Google
Groups Android Beginners group.
NEW! Try asking and tagging your question on Stack Overflow at
http://stackoverflow.com/questions/tagged/android
To unsubscribe from this group, send email to
android-beginners+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Creating a populated sqlite database
Certainly with only 100 rows you could write the SQL script containing the create table command and 100 insert commands and then use something like SQLite Expert to execute the script and create the DB. Or you could just write a straight Java application to execute the commands and create the DB. The SQLite file that results in all cases is portable. But for only 100 rows and 3 columns it's hardly worth messing with SQL -- you can just create an array containing the data and search that, or load up the data in a HashTable or some such. On Jul 15, 9:42 am, Rodney Lendore rodney.lend...@gmail.com wrote: The database will in the end contain about 100 rows and 3 columns. But this database will not be written to by the user simply read from to gain some generic information, depending on which buttons a user clicks. Thanks On Mon, Jul 12, 2010 at 9:23 PM, Justin Anderson janderson@gmail.comwrote: Unless the database is going to be quite large, I would just create it in code the first time you start up the app... How large are you anticipating this database is going to be? -- There are only 10 types of people in the world... Those who know binary and those who don't. -- On Mon, Jul 12, 2010 at 1:56 PM, DanH danhi...@ieee.org wrote: Certainly in Java code you can create it, or in C++, or with a stand- alone PC tool such as SQLite Expert. SMOP. Dunno about /res. On Jul 8, 4:30 pm, Rodney Lendore rodney.lend...@gmail.com wrote: Hi, I am trying to create a pre-populated sqlite database to be shipped with my application. The database is to contain three columns. | ID | Name | URL | and possibly several hundred rows. Is there a way I can create this in /res or java code smartly ? Forgive me I am fairly new to Java and have little experience with SQL. Thanks very much in advance for you help Rodney -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.comandroid-beginners%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.comandroid-beginners%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: ActivityNotFoundException and txt files
http://developer.android.com/reference/android/content/ActivityNotFoundException.html
:
This exception is thrown when a call to startActivity(Intent) or one
of its variants fails because an Activity can not be found to execute
the given Intent.
On Jul 16, 6:27 pm, Harald harald.kron...@gmail.com wrote:
I am trying to open at .txt file in the standard file editor, I tryed
this code but all I get is an ActivityNotFoundException
File root = Environment.getExternalStorageDirectory();
File f = new File(root, /Android/data/HKKalender/
stdtekster.txt);
try {
Intent intent = new Intent(Intent.ACTION_EDIT);
intent.setDataAndType(Uri.fromFile(f), text/plain);
startActivity(intent);
} catch (Exception e) { }
--
You received this message because you are subscribed to the Google
Groups Android Beginners group.
NEW! Try asking and tagging your question on Stack Overflow at
http://stackoverflow.com/questions/tagged/android
To unsubscribe from this group, send email to
android-beginners+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Implementing a Service - Call down to super?
Maybe, maybe not. It depends on what you want to do. On Jul 15, 2:46 pm, Jake Colman col...@ppllc.com wrote: When extending Service with your own Service, should you be calling down to the super implementation of the methods that are being overridden? If so, do you do it before or after you've invoked your own code? -- Jake Colman -- Android Tinkerer -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Java Keyword This and Button Listeners.
Think of this as a reference (ie, pointer) variable, no different than refForMyObject. It's just a shorthand for the reference variable that is used to reference the object you're currently in. There are a few cases where the Java compiler special-cases its use, but still the meaning reference variable to the current object is consistent in all cases. On Jul 12, 9:50 pm, Keith Roberts keithr...@gmail.com wrote: Hey all, I know that the keyword this refers to an instance variable or can invoke a constructor, but I don't understand how passing this as the arg for setOnClickListener () works?Could someone explain? Thanks, keith -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: setting age
I would guess either a Spinner or a DatePicker (entering the birth date). Though one wonders why there isn't a generic NumberPicker or ItemPicker. On Jul 9, 8:19 pm, Emmen Farooq farooq.em...@gmail.com wrote: Im making an app which would have to get users age , now what would be the appropriate control ? I have to make something like a scroll with numbers in it , but the user shouldnt enter from the keyboard , he should have something to select from , many thanks indeed -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Using SQLite to get information
I guess the first question would be: Do you have questions specific to Android, or are you asking, in general, how to do an SQL query (and, prior to that, how to populate the database)? On Jul 12, 10:35 am, Curran thecur...@hotmail.co.uk wrote: Hi everyone, I'm still quite new Android development and need a way to read information from a database, which I'm not really sure how to do. Essentially my app is a reference for chemistry students, which will read and display information about topics. The database needs to be pre-prepared (with all the information) but I've got confused how to do this in Eclipse, and also how to get this onto a device. An an example of what I want it to do (without chemistry jargon, and because I'm probably not being too clear :-) ), a user selected the option Cat, which then pulls from a database things such as Amount of legs, Colour, height etc. I understand this is probably a really basic thing, but help would be greatly appreciated :) Thanks! -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
[android-beginners] Re: Creating a populated sqlite database
Certainly in Java code you can create it, or in C++, or with a stand- alone PC tool such as SQLite Expert. SMOP. Dunno about /res. On Jul 8, 4:30 pm, Rodney Lendore rodney.lend...@gmail.com wrote: Hi, I am trying to create a pre-populated sqlite database to be shipped with my application. The database is to contain three columns. | ID | Name | URL | and possibly several hundred rows. Is there a way I can create this in /res or java code smartly ? Forgive me I am fairly new to Java and have little experience with SQL. Thanks very much in advance for you help Rodney -- You received this message because you are subscribed to the Google Groups Android Beginners group. NEW! Try asking and tagging your question on Stack Overflow at http://stackoverflow.com/questions/tagged/android To unsubscribe from this group, send email to android-beginners+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en
