[android-beginners] Any MediaPlayer success?
Has anyone had any success with the MediaPlayer class? I haven't been able to play a single 3gp file. I've also tried a few MPEG-4 files. I've downloaded maybe 30+ random small files from the internet. They play fine in PC players (I'm testing with VLC) but no luck on the emulator. I've tried files as small as a few kb up to 5MB. Is there a place to find out the expected file structures for MediaPlayer? Also, does anyone have any video files recorded with MediaRecorder on an actual G1? I'd like to examine the recorded file structure in detail with a hex editor. Thanks! David --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Beginners group. To post to this group, send email to android-beginners@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -~--~~~~--~~--~--~---
[android-beginners] Re: Prevent uninstallation of application in Android
Even if this were possible -- and I don't think it is -- can you give one good reason why a user should let you do this? On Sun, Oct 5, 2008 at 8:15 AM, denismo [EMAIL PROTECTED] wrote: Hello, I've got an unusual requirement - I need to PREVENT users from uninstalling my application from their Android platform (not emulator but the future devices). Is there an official way for doing this? An unofficial? If that's not possible exactly, perhaps it may be possible to: - remove/hide the application from the installed applications list - abort uninstallation by throwing an error from some standard class - prevent uninstallation of only some types/configurations of applications? - automatically force reinstall of uninstalled application? - invoke some class in the application before being uninstalled so that it can send SMS/access a web site to notify someone about this? Thanks. Denis --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Beginners group. To post to this group, send email to android-beginners@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -~--~~~~--~~--~--~---
[android-beginners] Re: Using the Log class
Zach, If you are stepping through your program and it crashes, then it has crashed on the line you are on. Or, you can just debug, let run to crash, and read the call stack. Look at the top of the stack. This is where it crashed. If it's not your code, then check for layout/xml problems. Check out Eclipse's excellent debugger tutorials (videos included!) http://eclipsetutorial.sourceforge.net/debugger01/lesson01.html Other Eclipse debugger tutorials (7 in all) http://sourceforge.net/project/showfiles.php?group_id=200662package_id=251688 I highly recommend you learn to use the debugger frontward and backward. It will save you a lot of time and headache. David On Fri, Oct 3, 2008 at 2:42 AM, Zachary Becker [EMAIL PROTECTED] wrote: Wow I am awake now, I spent 20 minutes trying to figure that out and it isn't even in a function. Ok time for bed. On Thu, Oct 2, 2008 at 11:41 PM, Zachary Becker [EMAIL PROTECTED] wrote: I am trying to debug this activity. And so far I have tried to avoid using the debugger features in Eclipse because I can't figure out how they work. I can step through my activity untill it crashes but it doesn't tell me what line of code is causing the error or anything. So, I was going to try sending messages to the Log thingy that is there when you are debugging. From what I gather you do that using Log class. Such as Log.d(myApp, my message); But when I use that Eclipse tells me I have a syntax error. It is getting late so I might just be tired and totally missing something. But I figured id ask if anyone could help. Here is a screeny of the message. http://zrbecker.com/error.jpg Thanks in advanced. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Beginners group. To post to this group, send email to android-beginners@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -~--~~~~--~~--~--~---
[android-beginners] Re: With no previous programming knowledge / experience, how do I get started creating an app?
The Eclipse plugin can be bypassed, if you really wanted to. But I wouldn't recommend it. As an IDE (Integrated Development Environment), Eclipse manages your projects for you in many ways. To forgo it would mean using the command line for everything.The SDK is completely independent of the Plugin. Make no mistake, you are actually typing Java in there. It is being compiled as Java with the installed Java JDK. The SDK tools then convert it to Dalvik. The plugin makes it pretty and easy for you. See the tools folder in the android sdk folder -- this is all being accessed by Eclipse through the Android Development Tools (ADT) Plugin. Actually, when you become more experienced, you may short-cut right to the command line for things like debugging. But, I find the Eclipse debugger to be quite nice. Finally, I quote Google on Installing the SDK: If you will be using the Eclipse IDE as your environment for developing Android applications, you can install a custom plugin called Android Development Tools (ADT), which adds integrated support for Android projects and tools. The ADT plugin includes a variety of powerful extensions that make creating, running, and debugging Android applications faster and easier. (http://code.google.com/android/intro/installing.html)http://code.google.com/android/intro/installing.html David On Wed, Oct 1, 2008 at 12:24 AM, Morisato13 [EMAIL PROTECTED] wrote: I'm sorry, but what exactly does the eclipse plugin do? There's a tidbit about it in the FAQs stating that it makes creating apps for Android easier, but what does it actually do that makes it easier? Is it the conversion tool that converts Java to Dalvik? Is it a GUI that does coding in Java without actually typing out Java code (kind of like VB where you have windows and such and you move them around and set value having it do the real coding behind the scenes)? Or is it something completely different? On Sep 30, 9:38 am, David Farler [EMAIL PROTECTED] wrote: You are correct. First, your files are compiled as true java class files. The Java bytecode gets converted to the dex format by the dx utility. So, while it's not technically Java at the end, all of the rules of programming java should apply. This is why using Eclipse is such a huge plus. It's Java language integration is very good. If you want to get on a Java forum, you can try Sun's Java forum: Java Beginners:http://forums.sun.com/forum.jspa?forumID=54 Java Programming in General:http://forums.sun.com/forum.jspa?forumID=31 Cheers, David On Tue, Sep 30, 2008 at 3:50 AM, Morisato13 [EMAIL PROTECTED] wrote: Thanks. I'm reading #4 right now. Now I was watching the featured video on the andriod home page with Jason Chen, and one of the questions in the QA section of the video made Jason clarify that Android is not Java, applications are written in Java programming language, but Android is Dalvic bicode... now, with that said, is there anything that I would learn while learning Java that does not or can not be applied to programming applications for Android? I'm guessing no because from my guess, what happens is you code in Java and it gets baked into whatever Dalvic bicode is for android to recognize it... but I just want someone who knows to answer. Also, are there any forums that specifically help noobs with noob java/ programming questions? I'd ask them here but it seems this forum is really for Android related questions. On Sep 29, 3:52 am, David Farler [EMAIL PROTECTED] wrote: Hi Morisato, Since you'll be programming in Java for Android, I recommend you start practicing with it. Java is a good place to start in many cases. Check out the following books from your library or college library: 1. Absolute Java by Walter Savitch (3rd edition) 2. Java Foundations: Introduction to Program Design and Data Structures by John Lewis 3. Also check out this free online course offered by MIT (you don't have to register): Introduction to Computer Science and Programming http://ocw.mit.edu/OcwWeb/Electrical-Engineering-and-Computer-Science. .. 4. A free online book: Thinking in Java by Bruce Eckel: http://www.mindview.net/Books/TIJ/ 5. And don't forget the official Java API: http://java.sun.com/javase/6/docs/api/ All of these resources should get you started. Remember that programming is more than just memorization. Try to use first principles by understanding how a computer (or virtual machine in this case) is doing its job. Once you understand the core of it, you can program in any language. All of the suggestions above assume no previous knowledge (except number 5, but take a look at it anyway). Don't get discouraged. Programming can be hard, but remember that sometimes people make it hard because they don't remember what it's like to be a beginner. You should
[android-beginners] Re: Preferences Error
That sounds like a problem with eclipse. Did you install from repositories? I recommend upgrading to Eclipse 3.4 Ganymede directly from the eclipse.orgwebsite. Just keep the extracted eclipse folder wherever is convenient for you. Also, apt-get remove your current eclipse installation before starting any serious work. Your Java JDK should be sufficient. Follow these instructions for installation with 3.4 and you should be good to go. I have tested on vanilla Hardy. http://code.google.com/android/intro/installing.html Best, David On Tue, Sep 30, 2008 at 1:04 AM, nzkronic [EMAIL PROTECTED] wrote: Hi all, I get the following error when opening the android section of the elcipse preferences window. Unable to create the selected preference page. org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter $TerminatingClassNotFoundException Details Unable to create the selected preference page. An error has occured while automatically activating bundle com.android.ide.eclipse.adt (581) Any help here is appreciated. Using Ubuntu 8.04 JDK = java-6-sun-1.6.0.06 Eclipse 3.41 --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Beginners group. To post to this group, send email to android-beginners@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -~--~~~~--~~--~--~---
[android-beginners] Re: Help creating .bash_profile (Mac)
Hi Nathan,
First of all, adding the tools folder to the path is optional. It will just
allow you to run the command-line tools in that folder without having to
cd there.
Files that start with a . are hidden in Unix and Linux based operating
systems.
Bash is the shell that is used by many Unix and Linux distributions,
including Mac OS X. I recommend you read:
Using the OS X Leopard Command Line (
http://www.informit.com/articles/article.aspx?p=1144082seqNum=1)
http://www.informit.com/articles/article.aspx?p=1144082seqNum=1
and
Bash By Example
(http://www.ibm.com/developerworks/library/l-bash.html)
http://www.ibm.com/developerworks/library/l-bash.html
and get comfortable working with it. It will greatly enhance your powers.
(And who doesn't want their power enhanced?) Also, you may want to do some
googling for bash tutorials in Mac OS X in general.
Unless you have a customized Finder, you will need to open the Terminal
application in Applications/Utilities. You probably won't be able to see
dot-files in the Finder. Once you have Terminal running, you'll have a
'bash' command line at your home folder I think. Once there,
ls -a
And see if there is a .bash_profile in your home folder. If there isn't:
touch .bash_profile
This will create a blank file if there is none. Then,
open -e .bash_profile
This will open it in TextEdit. Add the following line:
export PATH=${PATH}:*your_sdk_dir*/tools
Where your_sdk_dir is the full path to the android sdk folder (type
carefully, removebrackets).
For example, if the android folder is in the eclipse folder on your Desktop,
it would be:
export PATH=${PATH}:/Users/David/Desktop/eclipse/
android-sdk-mac_x86-1.0_r1/tools
Save and quit.
When you are ready to continue installing the android SDK, keep reading:
http://code.google.com/android/intro/installing.html
Cheers and may your powers be enhanced greatly,
David
On Mon, Sep 29, 2008 at 10:57 PM, nathan [EMAIL PROTECTED] wrote:
Hello Android Beginners group,
I would like to try and develop simple apps for android but I am
unfamiliar with terminal on macs (or any other shell system) I only
know simple commands like cd, ls and mkdir. Could someone please help
me with the command lines that I need to use to create a bash profile
like the installation guide @ code.google.com/android recommends I do?
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[android-beginners] Re: Background Image for a (semi-transparent) List
Hi Sascha,
I'm not an expert yet at this, but I did look into your problem. Perhaps you
are forgetting to use the ListActivity's own ListView? Code below should
work.
package com.android.hello;
import android.app.ListActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
public class HelloAndroid extends ListActivity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String[] someStringArrayThatShouldWork = {Test1, Test2, Test3};
ArrayAdapterString aAdapter = new ArrayAdapterString(this,
android.R.layout.simple_list_item_1, someStringArrayThatShouldWork);
getListView().setAdapter(aAdapter);
}
}
Hope this helps,
David
On Mon, Sep 29, 2008 at 11:09 AM, [EMAIL PROTECTED]
[EMAIL PROTECTED] wrote:
Hi fellows,
first of all, please don't hit me for asking stupid question. :) I'm
quite a novice when it comes to Java (J2EE, J2ME, J2SE), but I'm a
totally n00b when it comes to android. The tutorials are very helpful
although I needed several tries to get a ListActivity working (using a
ListAdapter)... my approach to just display an array of Strings didn't
work... That should have been the easiest solution, since I have a
fixed number of items to display in the list...
This is what I did:
private String[] someStringArrayThatShouldWork = {Test1, Test2};
in the onCreate method:
setListAdapter(new ArrayAdapterString(this,
android.R.layout.simple_list_item_1,
someStringArrayThatShouldWork));
getListView().setTextFilterEnabled(true);
I received an exception whenever I wanted to start the app. Is there
anything else I need? That exception was something like need ID for
TextView or something...
But basically I'd like to have something like that:
A list, which is semi-transparent printed on a background image! That
background image should change when ever the device is rotated to it's
widescreen outfit. You should see the background image and also the
list entrie about it. (65% opacity)
Can someone give me some hints where to start... I've already checked
the API demos... But I didn't even get the simple List (String Array
example) to work... :)
Regards and thank you very much in advance,
Sascha
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[EMAIL PROTECTED]
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[android-beginners] Re: Background Image for a (semi-transparent) List
Actually, Zach, I pasted everything you sent me and I also got your No
Items! message. The problem is with your row.xml.
Try this:
row.xml:
TextView xmlns:android=http://schemas.android.com/apk/res/android;
android:id=@android:id/text1 android:paddingTop=2dip
android:paddingBottom=3dip android:layout_width=fill_parent
android:layout_height=wrap_content /
:
This is similar to Android's simple_list_item_1 layout.
Then, remove the line:
setContentView(R.layout.main);
The content view is already being set when connecting this class to the
ArrayAdapter. Resetting it to main will make it blank.
Hope this helps,
David
On Mon, Sep 29, 2008 at 3:43 PM, Zachary Becker [EMAIL PROTECTED] wrote:
I am having a similar issue.
I tried you suggestion but my list just shows up empty.
I think my problem might be in my XML.
Here is my code
simplelist.java
===
package zach.test.simplelist;
import android.app.ListActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
public class SimpleList extends ListActivity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String[] StringArray = { Hello, World!, Foo Bar, Blah Blah
Blah };
ArrayAdapterString StringAdapter = new ArrayAdapterString(this,
R.layout.row, StringArray);
// setListAdapter(StringAdapter);// crashes program on startup
getListView().setAdapter(StringAdapter);// program starts fine,
but list shows empty
setContentView(R.layout.main);
}
}
main.xml
===
?xml version=1.0 encoding=utf-8?
LinearLayout xmlns:android=http://schemas.android.com/apk/res/android;
android:layout_width=wrap_content
android:layout_height=wrap_content
ListView android:id=@+id/android:list
android:layout_width=wrap_content
android:layout_height=wrap_content /
TextView android:id=@+id/android:empty
android:layout_width=wrap_content
android:layout_height=wrap_content
android:text=No Items! /
/LinearLayout
row.xml
=
?xml version=1.0 encoding=utf-8?
TextView xmlns:android=http://schemes.android.com/apk/res/android;
android:id=@+id/text1
android:layout_width=wrap_content
android:layout_height=wrap_content /
On Mon, Sep 29, 2008 at 11:12 AM, David Farler [EMAIL PROTECTED] wrote:
Hi Sascha,
I'm not an expert yet at this, but I did look into your problem. Perhaps
you are forgetting to use the ListActivity's own ListView? Code below should
work.
package com.android.hello;
import android.app.ListActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
public class HelloAndroid extends ListActivity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String[] someStringArrayThatShouldWork = {Test1, Test2,
Test3};
ArrayAdapterString aAdapter = new ArrayAdapterString(this,
android.R.layout.simple_list_item_1, someStringArrayThatShouldWork);
getListView().setAdapter(aAdapter);
}
}
Hope this helps,
David
On Mon, Sep 29, 2008 at 11:09 AM, [EMAIL PROTECTED]
[EMAIL PROTECTED] wrote:
Hi fellows,
first of all, please don't hit me for asking stupid question. :) I'm
quite a novice when it comes to Java (J2EE, J2ME, J2SE), but I'm a
totally n00b when it comes to android. The tutorials are very helpful
although I needed several tries to get a ListActivity working (using a
ListAdapter)... my approach to just display an array of Strings didn't
work... That should have been the easiest solution, since I have a
fixed number of items to display in the list...
This is what I did:
private String[] someStringArrayThatShouldWork = {Test1, Test2};
in the onCreate method:
setListAdapter(new ArrayAdapterString(this,
android.R.layout.simple_list_item_1,
someStringArrayThatShouldWork));
getListView().setTextFilterEnabled(true);
I received an exception whenever I wanted to start the app. Is there
anything else I need? That exception was something like need ID for
TextView or something...
But basically I'd like to have something like that:
A list, which is semi-transparent printed on a background image! That
background image should change when ever the device is rotated to it's
widescreen outfit. You should see the background image and also the
list entrie about it. (65% opacity)
Can someone give me some hints where to start... I've already checked
the API demos... But I didn't even get the simple List (String Array
example) to work... :)
Regards and thank you very much in advance,
Sascha
[android-beginners] Re: For the REAL beginners!
Eclipse, my friend. Eclipse. http://code.google.com/android/intro/installing.html On Mon, Sep 29, 2008 at 9:32 PM, tedpants [EMAIL PROTECTED] wrote: I'm planning on programming very simple Android programs on my laptop during free time. Does anybody have the best solution for what IDE I should be using to make it easy and inexpensive? I've downloaded Jbuilder and JDK 6 and the Android SDK but am having trouble setting up all the command line instructions and integration. Is there a simpler way? --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Beginners group. To post to this group, send email to android-beginners@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -~--~~~~--~~--~--~---
