Develop Reference

Android: Main Activity not found

my App was already running fine, but suddenly the main activity is not found any more. Don't have a clue why.
In the end I get java.lang.ClassNotFoundException: de.xxx.android.shopper.MyShopperActivity
I did a software update using the Android SDK manager. After that I get the error in this special app, all others are not affected.
My manifest
<uses-sdk android:minSdkVersion="11" android:targetSdkVersion="19"/>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application
android:icon="#drawable/shoppericon2"
android:allowBackup="true"
android:label="#string/AppNameAppString" >
<activity
android:name=".MyShopperActivity"
android:label="#string/AppNameActivityString"
android:screenOrientation="portrait"
android:configChanges="orientation|keyboardHidden|screenSize">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".MenuActivity" />
<activity
android:name="com.google.ads.AdActivity"
android:label="#string/AppNameActivityString"
android:theme="#android:style/Theme.NoTitleBar.Fullscreen"
android:configChanges="orientation|keyboard|keyboardHidden|screenLayout|uiMode|screenSize|smallestScreenSize" />
</application>
The activity
package de.xxx.android.shopper;
import ...
#SuppressLint("ParserError")
public class MyShopperActivity extends Activity implements AdListener
{
...
}
This is what logcat says:
06-10 10:45:57.464: D/AndroidRuntime(1518): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
06-10 10:45:57.474: D/AndroidRuntime(1518): CheckJNI is ON
06-10 10:45:58.133: D/AndroidRuntime(1518): Calling main entry com.android.commands.pm.Pm
06-10 10:45:58.193: D/AndroidRuntime(1518): Shutting down VM
06-10 10:45:58.203: D/dalvikvm(1518): GC_CONCURRENT freed 100K, 78% free 454K/2048K, paused 1ms+4ms
06-10 10:45:58.213: D/dalvikvm(1518): Debugger has detached; object registry had 1 entries
06-10 10:45:58.623: D/AndroidRuntime(1532): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
06-10 10:45:58.623: D/AndroidRuntime(1532): CheckJNI is ON
06-10 10:45:59.244: D/AndroidRuntime(1532): Calling main entry com.android.commands.am.Am
06-10 10:45:59.284: I/ActivityManager(863): Force stopping package de.xxx.android.shopper uid=10039
06-10 10:45:59.284: I/ActivityManager(863): Killing proc 1500:de.xxx.android.shopper/10039: force stop
06-10 10:45:59.284: W/ActivityManager(863): Force removing ActivityRecord{b5cbedc0 de.xxx.android.shopper/.MyShopperActivity}: app died, no saved state
06-10 10:45:59.304: W/NetworkManagementSocketTagger(863): setKernelCountSet(10039, 0) failed with errno -2
06-10 10:45:59.314: W/NetworkManagementSocketTagger(863): setKernelCountSet(10012, 1) failed with errno -2
06-10 10:45:59.334: I/ActivityManager(863): START {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=de.xxx.android.shopper/.MyShopperActivity} from pid 1532
06-10 10:45:59.384: D/AndroidRuntime(1532): Shutting down VM
06-10 10:45:59.414: D/dalvikvm(1532): GC_CONCURRENT freed 100K, 77% free 478K/2048K, paused 5ms+2ms
06-10 10:45:59.424: D/dalvikvm(1532): Debugger has detached; object registry had 1 entries
06-10 10:45:59.454: D/dalvikvm(1544): Not late-enabling CheckJNI (already on)
06-10 10:45:59.484: I/ActivityManager(863): Start proc de.xxx.android.shopper for activity de.xxx.android.shopper/.MyShopperActivity: pid=1544 uid=10039 gids={3003}
06-10 10:45:59.514: E/jdwp(1544): Failed writing handshake bytes: Broken pipe (-1 of 14)
06-10 10:45:59.514: D/dalvikvm(1544): Debugger has detached; object registry had 0 entries
06-10 10:45:59.554: W/NetworkManagementSocketTagger(863): setKernelCountSet(10039, 1) failed with errno -2
06-10 10:45:59.575: W/ActivityThread(1544): Application de.xxx.android.shopper is waiting for the debugger on port 8100...
06-10 10:45:59.575: I/System.out(1544): Sending WAIT chunk
06-10 10:46:00.307: I/dalvikvm(1544): Debugger is active
06-10 10:46:00.431: I/System.out(1544): Debugger has connected
06-10 10:46:00.431: I/System.out(1544): waiting for debugger to settle...
06-10 10:46:00.641: I/System.out(1544): waiting for debugger to settle...
06-10 10:46:00.778: W/ActivityManager(863): Launch timeout has expired, giving up wake lock!
06-10 10:46:00.850: I/System.out(1544): waiting for debugger to settle...
06-10 10:46:01.055: I/System.out(1544): waiting for debugger to settle...
06-10 10:46:01.267: I/System.out(1544): waiting for debugger to settle...
06-10 10:46:01.482: I/System.out(1544): waiting for debugger to settle...
06-10 10:46:01.688: I/System.out(1544): waiting for debugger to settle...
06-10 10:46:01.897: I/System.out(1544): waiting for debugger to settle...
06-10 10:46:02.103: I/System.out(1544): waiting for debugger to settle...
06-10 10:46:02.321: I/System.out(1544): waiting for debugger to settle...
06-10 10:46:02.535: I/System.out(1544): waiting for debugger to settle...
06-10 10:46:02.740: I/System.out(1544): debugger has settled (1314)
06-10 10:46:02.894: I/dalvikvm(1544): Failed resolving Lde/xxx/android/shopper/MyShopperActivity; interface 58 'Lcom/google/ads/AdListener;'
06-10 10:46:02.894: W/dalvikvm(1544): Link of class 'Lde/xxx/android/shopper/MyShopperActivity;' failed
06-10 10:46:04.593: W/NetworkManagementSocketTagger(863): setKernelCountSet(10012, 0) failed with errno -2
06-10 10:46:09.561: W/ActivityManager(863): Activity idle timeout for ActivityRecord{b5af65b8 de.xxx.android.shopper/.MyShopperActivity}

Hi i think ur parent package you noted in the manifest.xml and package name for the MyShopperActivity class is different. I hope that is the problem.

Android project rename - won't launch now

After successful tests I've tried to rename my project / package from, 'test...' to something more relevant. I used the various Eclipse refactor helpers where possible. All the source files appear to have the right package at the top now, the manifest seems to have the right package name, etc. I performed a 'clean'.
All seemed well. Only problem is that it won't launch - doesn't even get to the activity onCreate() handler. It crashes at AvtivityThread.performLaunchActivity(ActivityThread$ActivityRecord, Intent) line 2417.
Clearly something still has the old name in it, but I cannot find it.
Any suggestions where to look / what to do?
As requested: log cat (nothing in console):
07-14 07:00:04.149: D/AndroidRuntime(347): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<<br>
07-14 07:00:04.149: D/AndroidRuntime(347): CheckJNI is ON<br>
07-14 07:00:04.389: D/AndroidRuntime(347): --- registering native functions ---<br>
07-14 07:00:04.830: D/ddm-heap(347): Got feature list request<br>
07-14 07:00:05.239: D/AndroidRuntime(347): Shutting down VM<br>
07-14 07:00:05.250: D/dalvikvm(347): DestroyJavaVM waiting for non-daemon threads to exit<br>
07-14 07:00:05.250: D/dalvikvm(347): DestroyJavaVM shutting VM down<br>
07-14 07:00:05.250: D/dalvikvm(347): HeapWorker thread shutting down<br>
07-14 07:00:05.259: D/dalvikvm(347): HeapWorker thread has shut down<br>
07-14 07:00:05.259: D/jdwp(347): JDWP shutting down net...<br>
07-14 07:00:05.269: I/dalvikvm(347): Debugger has detached; object registry had 1 entries<br>
07-14 07:00:05.279: D/dalvikvm(347): VM cleaning up<br>
07-14 07:00:05.291: E/AndroidRuntime(347): ERROR: thread attach failed<br>
07-14 07:00:05.309: D/dalvikvm(347): LinearAlloc 0x0 used 629532 of 5242880 (12%)<br>
07-14 07:00:05.801: D/AndroidRuntime(355): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<<br>
07-14 07:00:05.809: D/AndroidRuntime(355): CheckJNI is ON<br>
07-14 07:00:06.049: D/AndroidRuntime(355): --- registering native functions ---<br>
07-14 07:00:06.490: D/ddm-heap(355): Got feature list request<br>
07-14 07:00:06.910: D/ActivityManager(52): Uninstalling process uk.co.nightshadearts.golfcaddy<br>
07-14 07:00:06.910: I/ActivityManager(52): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=uk.co.nightshadearts.golfcaddy/uk.co.nightshadearts.golfcaddy }<br>
07-14 07:00:06.969: D/AndroidRuntime(355): Shutting down VM<br>
07-14 07:00:06.969: D/dalvikvm(355): DestroyJavaVM waiting for non-daemon threads to exit<br>
07-14 07:00:07.009: E/AndroidRuntime(355): ERROR: thread attach failed<br>
07-14 07:00:07.009: D/dalvikvm(355): DestroyJavaVM shutting VM down<br>
07-14 07:00:07.009: D/dalvikvm(355): HeapWorker thread shutting down<br>
07-14 07:00:07.019: D/dalvikvm(355): HeapWorker thread has shut down<br>
07-14 07:00:07.019: D/jdwp(355): JDWP shutting down net...<br>
07-14 07:00:07.019: I/dalvikvm(355): Debugger has detached; object registry had 1 entries<br>
07-14 07:00:07.051: D/dalvikvm(355): VM cleaning up<br>
07-14 07:00:07.070: D/dalvikvm(355): LinearAlloc 0x0 used 639500 of 5242880 (12%)<br>
07-14 07:00:07.160: I/ActivityManager(52): Start proc uk.co.nightshadearts.golfcaddy for activity uk.co.nightshadearts.golfcaddy/uk.co.nightshadearts.golfcaddy: pid=362 uid=10031 gids={1015}<br>
07-14 07:00:07.309: D/ddm-heap(362): Got feature list request<br>
07-14 07:00:07.460: W/ActivityThread(362): Application uk.co.nightshadearts.golfcaddy is waiting for the debugger on port 8100...<br>
07-14 07:00:07.489: I/System.out(362): Sending WAIT chunk<br>
07-14 07:00:07.510: I/dalvikvm(362): Debugger is active<br>
07-14 07:00:07.750: I/System.out(362): Debugger has connected<br>
07-14 07:00:07.750: I/System.out(362): waiting for debugger to settle...<br>
07-14 07:00:07.951: I/System.out(362): waiting for debugger to settle...<br>
07-14 07:00:08.150: I/System.out(362): waiting for debugger to settle...<br>
07-14 07:00:08.350: I/System.out(362): waiting for debugger to settle...<br>
07-14 07:00:08.559: I/System.out(362): waiting for debugger to settle...<br>
07-14 07:00:08.759: I/System.out(362): waiting for debugger to settle...<br>
07-14 07:00:08.960: I/System.out(362): waiting for debugger to settle...<br>
07-14 07:00:09.187: I/System.out(362): waiting for debugger to settle...<br>
07-14 07:00:09.397: I/System.out(362): waiting for debugger to settle...<br>
07-14 07:00:09.609: I/System.out(362): waiting for debugger to settle...<br>
07-14 07:00:09.827: I/System.out(362): waiting for debugger to settle...<br>
07-14 07:00:10.039: I/System.out(362): waiting for debugger to settle...<br>
07-14 07:00:10.263: I/System.out(362): waiting for debugger to settle...<br>
07-14 07:00:10.479: I/System.out(362): debugger has settled (1449)<br>
07-14 07:00:10.681: E/gralloc(52): [unregister] handle 0x3fa718 still locked (state=40000001)<br>
07-14 07:00:17.029: W/ActivityManager(52): Launch timeout has expired, giving up wake lock!<br>
07-14 07:00:17.391: W/ActivityManager(52): Activity idle timeout for HistoryRecord{44f00a48 uk.co.nightshadearts.golfcaddy/uk.co.nightshadearts.golfcaddy}<br>
Calls:
GolfCaddy [Android Application]
DalvikVM[localhost:8610]
Thread [<3> main] (Suspended (exception RuntimeException))
ActivityThread.performLaunchActivity(ActivityThread$ActivityRecord, Intent) line: 2417
ActivityThread.handleLaunchActivity(ActivityThread$ActivityRecord, Intent) line: 2512
ActivityThread.access$2200(ActivityThread, ActivityThread$ActivityRecord, Intent) line: 119
ActivityThread$H.handleMessage(Message) line: 1863
ActivityThread$H(Handler).dispatchMessage(Message) line: 99
Looper.loop() line: 123
ActivityThread.main(String[]) line: 4363
Method.invokeNative(Object, Object[], Class, Class[], Class, int, boolean) line: not available [native method]
Method.invoke(Object, Object...) line: 521
ZygoteInit$MethodAndArgsCaller.run() line: 860
ZygoteInit.main(String[]) line: 618
NativeStart.main(String[]) line: not available [native method]
Thread [<13> Binder Thread #2] (Running)
Thread [<11> Binder Thread #1] (Running)
Answer:
Actually, I seem to have solved it, though I don't really know what I've fixed.
Following instructions fromn alextsc on app won't install after package rename I did the following:
Dumped the faulty project completely (deleted the project and the file tree) - fortunately I had the common sense to have copied the original before I did anything.
Copied the original back under 'workbench'.
Added a new project (original name) using create from existing source option.
That got it back and working.
Then rt clk on project and select Android Tools >> Rename application package, and let it do everything it wanted to.
Under src the package still had the old name, however. Used Eclipse refactor on that to change to the new name.
Still seems to work. All src files have the right package as well.
Renamed the (one) activity - still works. After that it was just more internal code modifactions line the XML app name.
Conclusion: Android Tools >> Rename application package did something, but I don't know what.
Moral: pick a name and stick to it in future.

Change the package name in manifest as
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.org.xxx" // your packagename here..
>
</manifest>
after changing this R.java will created once again under the new package and then you have to import R in all activity..
Try this, it may helpful to you..

Here is what I did.
In the Eclipse project "src" folder, you are going to have something called "com.test...", rename it to the new name and click OK. Then all the files should update automatically. At least it worked perfectly for me.
Please, remember that you have to change it in the Android Manifest as well.

Android Mono '/data/data/Mono.Android.DebugRuntime/lib/libmonosgen-2.0.so' not found

I wonder if you can help me with this error.
I am running a fresh fully updated install of windows 7 with
Visual studio 2010 Professional in trial mode.
In Visual Studio I create a new OpenGl Mono for Android Application
using the built in template.
I compile and run the application.
The emulator boots (I am running API_8) EMU.
The application starts and then aborts.
(In the emulator I get a black screen which quickly closes.)
Same thing happens if I do similar using the Mono Develop IDE
and or the other templates.
Here is a dump of the error message (I cannot find much info on google)
It looks like the error is related to the load library fail.
Thanks
// DUMP
03-05 23:23:47.464 D/AndroidRuntime( 418):
03-05 23:23:47.464 D/AndroidRuntime( 418): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<
03-05 23:23:47.464 D/AndroidRuntime( 418): CheckJNI is ON
03-05 23:23:47.574 D/AndroidRuntime( 418): --- registering native functions ---
03-05 23:23:48.034 I/ActivityManager( 60): Start proc OpenGLApplication1.OpenGLApplication1 for broadcast OpenGLApplication1.OpenGLApplication1/mono.android.Seppuku: pid=424 uid=10038 gids={3003, 1015}
03-05 23:23:48.164 I/ActivityThread( 424): Publishing provider OpenGLApplication1.OpenGLApplication1.__mono_init__: mono.MonoRuntimeProvider
03-05 23:23:48.174 D/dalvikvm( 424): Trying to load lib /data/data/OpenGLApplication1.OpenGLApplication1/lib/libmonodroid.so 0x44e7f010
03-05 23:23:48.174 D/dalvikvm( 424): Added shared lib /data/data/OpenGLApplication1.OpenGLApplication1/lib/libmonodroid.so 0x44e7f010
03-05 23:23:48.184 F/MonoDroid( 424): shared runtime initialization error: Cannot load library: load_library[1083]: Library '/data/data/Mono.Android.DebugRuntime/lib/libmonosgen-2.0.so' not found
03-05 23:23:48.204 I/ActivityManager( 60): Process OpenGLApplication1.OpenGLApplication1 (pid 424) has died.
03-05 23:23:48.214 D/AndroidRuntime( 418): Shutting down VM
03-05 23:23:48.214 D/jdwp ( 418): adbd disconnected
03-05 23:23:48.624 D/AndroidRuntime( 432):
03-05 23:23:48.624 D/AndroidRuntime( 432): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<
03-05 23:23:48.624 D/AndroidRuntime( 432): CheckJNI is ON
03-05 23:23:48.734 D/AndroidRuntime( 432): --- registering native functions ---
03-05 23:23:49.173 I/ActivityManager( 60): Start proc OpenGLApplication1.OpenGLApplication1 for broadcast OpenGLApplication1.OpenGLApplication1/mono.android.Seppuku: pid=438 uid=10038 gids={3003, 1015}
03-05 23:23:49.294 I/ActivityThread( 438): Publishing provider OpenGLApplication1.OpenGLApplication1.__mono_init__: mono.MonoRuntimeProvider
03-05 23:23:49.303 D/dalvikvm( 438): Trying to load lib /data/data/OpenGLApplication1.OpenGLApplication1/lib/libmonodroid.so 0x44e7f010
03-05 23:23:49.303 D/dalvikvm( 438): Added shared lib /data/data/OpenGLApplication1.OpenGLApplication1/lib/libmonodroid.so 0x44e7f010
03-05 23:23:49.314 F/MonoDroid( 438): shared runtime initialization error: Cannot load library: load_library[1083]: Library '/data/data/Mono.Android.DebugRuntime/lib/libmonosgen-2.0.so' not found
03-05 23:23:49.334 I/ActivityManager( 60): Process OpenGLApplication1.OpenGLApplication1 (pid 438) has died.
03-05 23:23:49.344 D/AndroidRuntime( 432): Shutting down VM
03-05 23:23:49.344 D/jdwp ( 432): adbd disconnected
03-05 23:23:50.333 D/AndroidRuntime( 447):
03-05 23:23:50.333 D/AndroidRuntime( 447): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<
03-05 23:23:50.333 D/AndroidRuntime( 447): CheckJNI is ON
03-05 23:23:50.443 D/AndroidRuntime( 447): --- registering native functions ---
03-05 23:23:50.873 I/ActivityManager( 60): Starting activity: Intent { act=android.intent.action.MAIN flg=0x10000000 cmp=OpenGLApplication1.OpenGLApplication1/openglapplication1.Activity1 }
03-05 23:23:50.893 I/ActivityManager( 60): Start proc OpenGLApplication1.OpenGLApplication1 for activity OpenGLApplication1.OpenGLApplication1/openglapplication1.Activity1: pid=453 uid=10038 gids={3003, 1015}
03-05 23:23:50.923 D/AndroidRuntime( 447): Shutting down VM
03-05 23:23:50.923 D/jdwp ( 447): adbd disconnected
03-05 23:23:50.953 I/AndroidRuntime( 447): NOTE: attach of thread 'Binder Thread #3' failed
03-05 23:23:51.173 I/ActivityThread( 453): Publishing provider OpenGLApplication1.OpenGLApplication1.__mono_init__: mono.MonoRuntimeProvider
03-05 23:23:51.223 D/dalvikvm( 453): Trying to load lib /data/data/OpenGLApplication1.OpenGLApplication1/lib/libmonodroid.so 0x44e7eef0
03-05 23:23:51.223 D/dalvikvm( 453): Added shared lib /data/data/OpenGLApplication1.OpenGLApplication1/lib/libmonodroid.so 0x44e7eef0
03-05 23:23:51.263 F/MonoDroid( 453): shared runtime initialization error: Cannot load library: load_library[1083]: Library '/data/data/Mono.Android.DebugRuntime/lib/libmonosgen-2.0.so' not found
03-05 23:23:51.283 I/ActivityManager( 60): Process OpenGLApplication1.OpenGLApplication1 (pid 453) has died.
03-05 23:23:51.293 I/UsageStats( 60): Unexpected resume of com.android.launcher while already resumed in OpenGLApplication1.OpenGLApplication1
03-05 23:23:51.423 W/InputManagerService( 60): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy#45104b68

The issue is from the newer versions of mono where libmonosgen-2.0 does not get installed automatically. The path that you will see in which it fails is actually a simlink for the library. What you have to do is manually or through a non-mono apk, create the following:
A folder with your package name in /data/app-lib/
in the folder you will have to push the libmonosgen-2.0.so (and libmonodroid.so if needed)
After this is done you have to navigate to data/data/your.package.name and create a simlink from lib -> the folder you created previously. the command to use is ln -s.
I have noticed that in some cases the simlink exists, but is pointing to a false location.
I had to do this manually and it would not survive a factory reset. A colleugue of mine actually did this the non-mono apk path which does everything for him when ever the provisioning app executes on first launch.

Try going to the project properties and turn off "fast deployment". Then manually remove your app from the emu/device, and try again.

Another possibility is that you don't have enough free space on your device. The problem isn't in your package (OpenGLApplication1), the problem is from installing the Mono.Android.DebugRuntime package, as /data/data/Mono.Android.DebugRuntime/lib/libmonosgen-2.0.so doesn't exist.
I would suggest looking through the adb logcat log, and see if something like the following is present:
W/NativeHelper( 98): Failed to cache package shared libs
W/NativeHelper( 98): java.io.IOException: Couldn't create cached binary /data/data/Mono.Android.DebugRuntime/lib/libmonosgen-2.0.so in /data/data/Mono.Android.DebugRuntime/lib
W/NativeHelper( 98): at com.android.internal.content.NativeLibraryHelper.copyNativeBinaryLI(NativeLibraryHelper.java:289)
If messages like the above are present, remove the Mono.Android.DebugRuntime package (adb uninstall Mono.Android.DebugRuntime), remove some extra apps from your device (to free up space), and try re-installing your app from the IDE.

Android Application crashing before running. Intent Problem or else?

Problem is simple.
Two Activities. One throwing intent at other.
Project have name : "Stupidroid"
package : "com.examples.stupidroid"
activity : "stupidOnSteroids"
below is stupidOnSteroids .java
package com.examples.stupidroid;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class stupidOnSteroids extends Activity {
private Button buttonThatWillTakeYouPlacesButton;
private Intent intentThatwillTakeYouPlacesIntent;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
InitLayouts();
InitSetOnClickListeners();
}
private void InitSetOnClickListeners() {
buttonThatWillTakeYouPlacesButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
intentThatwillTakeYouPlacesIntent.setAction("");
}
});
}
private void InitLayouts() {
buttonThatWillTakeYouPlacesButton = (Button)findViewById(R.id.buttonThatWillGiveThyPowerButton);
intentThatwillTakeYouPlacesIntent = new Intent(stupidOnSteroids.this, Calc_print_codefile.class);
}
}
now is main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="right"
>
<Button android:id="#+id/goToOtherMoronButton"
android:text="Next Activity"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
></Button>
</LinearLayout>
now is another java file : Calc_print_codefile.java
package com.examples.stupidroid;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class Calc_print_codefile extends Activity{
Button buttonThatWillHelpYouCalculateButton;
TextView textThatWillTakeTheHitText;
Button buttonThatWillTakeYouHomeButton;
Intent intentThatWillTakeYouHomeIntent;
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.calc_prin_layout);
InitLayouts();
InitSetOnClickListener();
}
private void InitSetOnClickListener() {
buttonThatWillHelpYouCalculateButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
for(int i=0; i<32000; i++){
textThatWillTakeTheHitText.setText(i);
}
}
});
}
private void InitLayouts() {
buttonThatWillHelpYouCalculateButton = (Button)findViewById(R.id.buttonThatWillGiveThyPowerButton);
textThatWillTakeTheHitText = (TextView)findViewById(R.id.textThatWillAbsolveThyText);
intentThatWillTakeYouHomeIntent = new Intent(Calc_print_codefile.this, stupidOnSteroids.class);
}
}
corresponding xml : calc_prin_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView android:id="#+id/textThatWillAbsolveThyText"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text=" "
/>
<Button android:id="#+id/buttonThatWillGiveThyPowerButton"
android:text="Press ME, hard!"
android:layout_width="fill_parent"
android:layout_height="wrap_content"></Button>
</LinearLayout>
below is AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.examples.stupidroid"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="#drawable/icon" android:label="#string/app_name">
<activity android:name=".stupidOnSteroids"
android:label="#string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="Calc_print_codefile"></activity>
</application>
<uses-sdk android:minSdkVersion="8" />
</manifest>
Here are images (actually one only):
now is information from DDMS
07-29 14:13:31.344: WARN/ActivityThread(379): Application com.examples.stupidroid is waiting for the debugger on port 8100...
07-29 14:13:31.374: INFO/System.out(379): Sending WAIT chunk
07-29 14:13:31.434: INFO/dalvikvm(379): Debugger is active
07-29 14:13:31.594: INFO/System.out(379): Debugger has connected
07-29 14:13:31.604: INFO/System.out(379): waiting for debugger to settle...
07-29 14:13:31.804: INFO/System.out(379): waiting for debugger to settle...
07-29 14:13:31.824: DEBUG/dalvikvm(33): GC_EXPLICIT freed 2 objects / 64 bytes in 556ms
07-29 14:13:32.038: INFO/System.out(379): waiting for debugger to settle...
07-29 14:13:32.296: INFO/System.out(379): waiting for debugger to settle...
07-29 14:13:32.444: WARN/ActivityManager(60): Activity destroy timeout for HistoryRecord{440534a8 com.examples.stupidroid/.stupidOnSteroids}
07-29 14:13:32.494: INFO/System.out(379): waiting for debugger to settle...
07-29 14:13:32.694: INFO/System.out(379): waiting for debugger to settle...
07-29 14:13:32.894: INFO/System.out(379): waiting for debugger to settle...
07-29 14:13:33.113: INFO/System.out(379): waiting for debugger to settle...
07-29 14:13:33.356: INFO/System.out(379): waiting for debugger to settle...
07-29 14:13:33.574: INFO/System.out(379): waiting for debugger to settle...
07-29 14:13:33.795: INFO/System.out(379): waiting for debugger to settle...
07-29 14:13:34.008: INFO/System.out(379): waiting for debugger to settle...
07-29 14:13:34.215: INFO/System.out(379): waiting for debugger to settle...
07-29 14:13:34.423: INFO/System.out(379): waiting for debugger to settle...
07-29 14:13:34.634: INFO/System.out(379): waiting for debugger to settle...
07-29 14:13:34.868: INFO/System.out(379): debugger has settled (1504)
07-29 14:13:40.587: WARN/ActivityManager(60): Launch timeout has expired, giving up wake lock!
07-29 14:13:41.254: WARN/ActivityManager(60): Activity idle timeout for HistoryRecord{44078b28 com.examples.stupidroid/.stupidOnSteroids}
07-29 14:13:46.454: DEBUG/dalvikvm(135): GC_EXPLICIT freed 1190 objects / 62584 bytes in 179ms
07-29 14:13:57.363: DEBUG/dalvikvm(60): GC_FOR_MALLOC freed 12320 objects / 698248 bytes in 153ms
07-29 14:13:58.423: DEBUG/AndroidRuntime(379): Shutting down VM
07-29 14:13:58.423: WARN/dalvikvm(379): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
**07-29 14:13:58.543: ERROR/AndroidRuntime(379): FATAL EXCEPTION: main
07-29 14:13:58.543: ERROR/AndroidRuntime(379): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.examples.stupidroid/com.examples.stupidroid.stupidOnSteroids}: java.lang.NullPointerException**
07-29 14:13:58.543: ERROR/AndroidRuntime(379): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
07-29 14:13:58.543: ERROR/AndroidRuntime(379): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
07-29 14:13:58.543: ERROR/AndroidRuntime(379): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
07-29 14:13:58.543: ERROR/AndroidRuntime(379): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
07-29 14:13:58.543: ERROR/AndroidRuntime(379): at android.os.Handler.dispatchMessage(Handler.java:99)
07-29 14:13:58.543: ERROR/AndroidRuntime(379): at android.os.Looper.loop(Looper.java:123)
07-29 14:13:58.543: ERROR/AndroidRuntime(379): at android.app.ActivityThread.main(ActivityThread.java:4627)
07-29 14:13:58.543: ERROR/AndroidRuntime(379): at java.lang.reflect.Method.invokeNative(Native Method)
07-29 14:13:58.543: ERROR/AndroidRuntime(379): at java.lang.reflect.Method.invoke(Method.java:521)
07-29 14:13:58.543: ERROR/AndroidRuntime(379): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
07-29 14:13:58.543: ERROR/AndroidRuntime(379): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
07-29 14:13:58.543: ERROR/AndroidRuntime(379): at dalvik.system.NativeStart.main(Native Method)
07-29 14:13:58.543: ERROR/AndroidRuntime(379): Caused by: java.lang.NullPointerException
07-29 14:13:58.543: ERROR/AndroidRuntime(379): at com.examples.stupidroid.stupidOnSteroids.InitSetOnClickListeners(stupidOnSteroids.java:20)
07-29 14:13:58.543: ERROR/AndroidRuntime(379): at com.examples.stupidroid.stupidOnSteroids.onCreate(stupidOnSteroids.java:17)
07-29 14:13:58.543: ERROR/AndroidRuntime(379): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
07-29 14:13:58.543: ERROR/AndroidRuntime(379): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
07-29 14:13:58.543: ERROR/AndroidRuntime(379): ... 11 more
07-29 14:13:58.613: WARN/ActivityManager(60): Force finishing activity com.examples.stupidroid/.stupidOnSteroids
07-29 14:13:59.128: WARN/ActivityManager(60): Activity pause timeout for HistoryRecord{44078b28 com.examples.stupidroid/.stupidOnSteroids}
07-29 14:14:09.273: WARN/ActivityManager(60): Activity destroy timeout for HistoryRecord{44078b28 com.examples.stupidroid/.stupidOnSteroids}
07-29 14:14:13.443: INFO/Process(379): Sending signal. PID: 379 SIG: 9
07-29 14:14:13.465: INFO/ActivityManager(60): Process com.examples.stupidroid (pid 379) has died.
07-29 14:14:13.483: WARN/InputManagerService(60): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy#43ef9a68
Please tell me what can I do? I have followed same approach the other guy followed. My other project is working. what can it be? is it wrong nomenclature or what?
From my past experiences, it looks like very small very narrow mistake , might be silly, still can't put my finger at it.
Thanks for spending time reading this.
And oh, if I remove InitSetOnClickListeners(); from stupidOnSteroids.java file, I can at least see a button. So, there might be error.

You initializing of your button is wrong. In your main xml you don't have a button with the id R.id.buttonThatWillGiveThyPowerButton. You should change it to
R.id.goToOtherMoronButton.
You should take the time you spend to create this question to read the stacktrace (it says where to find the null pointer) and than spend the rest of the time to debug (if it is more complex than the simple null pointer). But a plus point for the quality of your question. Everything is there... code, log, pictures :)

Change:
textThatWillTakeTheHitText.setText(i);
to:
textThatWillTakeTheHitText.setText(String.valueOf(i));

Make sure that this line:
buttonThatWillTakeYouPlacesButton = (Button)findViewById(R.id.buttonThatWillGiveThyPowerButton);
Actually returns something and not just null.

textview keeps crashing while trying to setText

I'm trying to create an application such that when I click on a button in the 1st layout, it will extract the text from an EditText and place that value into a TextView from the 2nd layout. However, it seems that the application will crash because of the setText for the TextView.
I didn't put the logCat as it doesn't tell much. I believe that the error comes from the setText part. But I have no idea on how to fix that part, or maybe that my way of coding is wrong. Hope that someone will help me. Thanks in advance.
<TextView android:id="#+id/showtitle"
android:layout_marginTop="1dip"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="15sp"
android:textStyle="bold" />
<TextView android:id="#+id/showtemplate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/showtitle"
android:layout_alignLeft="#+id/showtitle"
android:paddingBottom="4dip"
android:includeFontPadding="false"
android:textSize="15sp"
android:textStyle="normal" />
Below is my java code:
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import android.widget.EditText;
import android.widget.Button;
import android.widget.Toast;
import android.app.Activity;
public class AndroidGroupSMS extends Activity{
private EditText title;
private EditText template;
private Button btnsave;
private Button btnload;
private TextView text,text2;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
title = (EditText) findViewById(R.id.title);
template = (EditText) findViewById(R.id.template);
btnsave = (Button) findViewById(R.id.save);
btnload = (Button) findViewById(R.id.load);
text = (TextView) findViewById(R.id.showtitle);
text2 = (TextView) findViewById(R.id.showtemplate);
btnsave.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
String sTitle = title.getText().toString();
String sTemplate = template.getText().toString();
if(sTitle.length() > 0 && sTemplate.length() > 0)
{
//this is where i'm setting the text extracted from the edittext boxes
text.setText(sTitle.toString());
text2.setText(sTemplate.toString());
}
else
Toast.makeText(getBaseContext(),"Please enter the title and template" + "", Toast.LENGTH_SHORT).show();
}
});
}
I have no idea how to read this.
Below is my logCat as requested:
11-12 04:32:51.652: DEBUG/AndroidRuntime(283): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<
11-12 04:32:51.662: DEBUG/AndroidRuntime(283): CheckJNI is ON
11-12 04:32:51.982: DEBUG/AndroidRuntime(283): --- registering native functions ---
11-12 04:32:52.464: DEBUG/ddm-heap(283): Got feature list request
11-12 04:32:53.092: DEBUG/AndroidRuntime(283): Shutting down VM
11-12 04:32:53.102: DEBUG/dalvikvm(283): DestroyJavaVM waiting for non-daemon threads to exit
11-12 04:32:53.102: DEBUG/dalvikvm(283): DestroyJavaVM shutting VM down
11-12 04:32:53.102: DEBUG/dalvikvm(283): HeapWorker thread shutting down
11-12 04:32:53.112: DEBUG/dalvikvm(283): HeapWorker thread has shut down
11-12 04:32:53.112: DEBUG/jdwp(283): JDWP shutting down net...
11-12 04:32:53.122: INFO/dalvikvm(283): Debugger has detached; object registry had 1 entries
11-12 04:32:53.132: DEBUG/dalvikvm(283): VM cleaning up
11-12 04:32:53.192: DEBUG/dalvikvm(283): LinearAlloc 0x0 used 629532 of 5242880 (12%)
11-12 04:32:53.842: DEBUG/AndroidRuntime(291): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<
11-12 04:32:53.842: DEBUG/AndroidRuntime(291): CheckJNI is ON
11-12 04:32:54.182: DEBUG/AndroidRuntime(291): --- registering native functions ---
11-12 04:32:54.682: DEBUG/ddm-heap(291): Got feature list request
11-12 04:32:55.302: DEBUG/dalvikvm(104): GC freed 2293 objects / 132304 bytes in 2157ms
11-12 04:32:55.352: DEBUG/ActivityManager(52): Uninstalling process joel.AndroidGroupSMS
11-12 04:32:55.362: DEBUG/ActivityManager(52): Force removing process ProcessRecord{43d9daf0 275:joel.AndroidGroupSMS/10024} (joel.AndroidGroupSMS/10024)
11-12 04:32:55.401: INFO/Process(52): Sending signal. PID: 275 SIG: 9
11-12 04:32:55.492: INFO/UsageStats(52): Unexpected resume of com.android.launcher while already resumed in joel.AndroidGroupSMS
11-12 04:32:55.512: INFO/WindowManager(52): WIN DEATH: Window{43cf7840 joel.AndroidGroupSMS/joel.AndroidGroupSMS.AndroidGroupSMS paused=false}
11-12 04:32:55.592: INFO/ActivityManager(52): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=joel.AndroidGroupSMS/.AndroidGroupSMS }
11-12 04:32:55.612: DEBUG/ActivityManager(52): Received spurious death notification for thread android.os.BinderProxy#43bc8370
11-12 04:32:55.652: DEBUG/AndroidRuntime(291): Shutting down VM
11-12 04:32:55.652: DEBUG/dalvikvm(291): DestroyJavaVM waiting for non-daemon threads to exit
11-12 04:32:55.662: DEBUG/dalvikvm(291): DestroyJavaVM shutting VM down
11-12 04:32:55.662: DEBUG/dalvikvm(291): HeapWorker thread shutting down
11-12 04:32:55.672: DEBUG/dalvikvm(291): HeapWorker thread has shut down
11-12 04:32:55.672: DEBUG/jdwp(291): JDWP shutting down net...
11-12 04:32:55.672: INFO/dalvikvm(291): Debugger has detached; object registry had 1 entries
11-12 04:32:55.672: DEBUG/dalvikvm(291): VM cleaning up
11-12 04:32:55.732: ERROR/AndroidRuntime(291): ERROR: thread attach failed
11-12 04:32:55.832: DEBUG/dalvikvm(291): LinearAlloc 0x0 used 639500 of 5242880 (12%)
11-12 04:32:55.952: INFO/ActivityManager(52): Start proc joel.AndroidGroupSMS for activity joel.AndroidGroupSMS/.AndroidGroupSMS: pid=298 uid=10024 gids={1015}
11-12 04:32:56.062: WARN/InputManagerService(52): Got RemoteException sending setActive(false) notification to pid 275 uid 10024
11-12 04:32:56.392: DEBUG/ddm-heap(298): Got feature list request
11-12 04:32:56.592: WARN/ActivityThread(298): Application joel.AndroidGroupSMS is waiting for the debugger on port 8100...
11-12 04:32:56.642: INFO/System.out(298): Sending WAIT chunk
11-12 04:32:56.691: INFO/dalvikvm(298): Debugger is active
11-12 04:32:56.872: INFO/System.out(298): Debugger has connected
11-12 04:32:56.882: INFO/System.out(298): waiting for debugger to settle...
11-12 04:32:57.082: INFO/System.out(298): waiting for debugger to settle...
11-12 04:32:57.282: INFO/System.out(298): waiting for debugger to settle...
11-12 04:32:57.483: INFO/System.out(298): waiting for debugger to settle...
11-12 04:32:57.692: INFO/System.out(298): waiting for debugger to settle...
11-12 04:32:57.893: INFO/System.out(298): waiting for debugger to settle...
11-12 04:32:58.092: INFO/System.out(298): waiting for debugger to settle...
11-12 04:32:58.300: INFO/System.out(298): waiting for debugger to settle...
11-12 04:32:58.502: INFO/System.out(298): waiting for debugger to settle...
11-12 04:32:58.707: INFO/System.out(298): waiting for debugger to settle...
11-12 04:32:58.912: INFO/System.out(298): waiting for debugger to settle...
11-12 04:32:59.112: INFO/System.out(298): waiting for debugger to settle...
11-12 04:32:59.322: INFO/System.out(298): debugger has settled (1361)
11-12 04:33:00.792: INFO/ActivityManager(52): Displayed activity joel.AndroidGroupSMS/.AndroidGroupSMS: 4860 ms (total 4860 ms)
11-12 04:33:02.942: WARN/KeyCharacterMap(298): No keyboard for id 0
11-12 04:33:02.952: WARN/KeyCharacterMap(298): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
11-12 04:33:04.592: DEBUG/dalvikvm(99): GC freed 481 objects / 24704 bytes in 185ms

Everything looks fine except the part where you use toString() on String object, that is not neccessary.
But are the text and the text2 TextViews located in the same XML layout as EditText views? In this case the main.xml? If the answer is no, then you have NullPointerException when you try to use them because findViewById can't find them.

You could just do text2.setText(template.getText().toString());
Instead of text2.setText(sTemplate.toString());
See if that works.

Joel,
Considering you have the edittext's in a different xml file. You might be able to create another resource file for what is displayed in your xml files. For instance you could create an xml file that will hold the values of what is displayed in your other xml files. Take a look at this example (notepad). The example is from the android development web site. You could use the values that are placed in your "values" xml for the values as all your other xml files. This way, you have a central place for your other xml files to grab their values. This may solve your problem. Let us know what results you find.
You will need to open the res folder and the values folder to see what im talking about when you are viewing the example.