I’ve got the following error: thread exiting with uncaught exception (group=0x4001b188). Nullpointerexception
And this is caused by the following code:
package org.apache.android.media;
import android.app.Activity;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnBufferingUpdateListener;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.MediaPlayer.OnPreparedListener;
import android.media.MediaPlayer.OnVideoSizeChangedListener;
import android.os.Bundle;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.widget.Toast;
public class VideoViewDemo extends Activity implements
OnBufferingUpdateListener, OnCompletionListener,
OnPreparedListener, OnVideoSizeChangedListener, SurfaceHolder.Callback {
private static final String TAG = "MediaPlayerDemo";
private int mVideoWidth;
private int mVideoHeight;
private MediaPlayer mMediaPlayer;
private SurfaceView mPreview;
private SurfaceHolder holder;
private String path;
private Bundle extras;
private static final String MEDIA = "media";
private static final int LOCAL_AUDIO = 1;
private static final int STREAM_AUDIO = 2;
private static final int RESOURCES_AUDIO = 3;
private static final int LOCAL_VIDEO = 4;
private static final int STREAM_VIDEO = 5;
private boolean mIsVideoSizeKnown = false;
private boolean mIsVideoReadyToBePlayed = false;
/**
*
* Called when the activity is first created.
*/
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
mPreview = (SurfaceView) findViewById(R.id.surface);
holder = mPreview.getHolder();
holder.addCallback(this);
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
extras = getIntent().getExtras();
}
private void playVideo(Integer Media) {
doCleanUp();
try {
path = "http://pwserver/barbapappa.mp4";
// Create a new media player and set the listeners
mMediaPlayer = new MediaPlayer();
mMediaPlayer.setDataSource(path);
mMediaPlayer.setDisplay(holder);
mMediaPlayer.prepare();
mMediaPlayer.setOnBufferingUpdateListener(this);
mMediaPlayer.setOnCompletionListener(this);
mMediaPlayer.setOnPreparedListener(this);
mMediaPlayer.setOnVideoSizeChangedListener(this);
mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
} catch (Exception e) {
Log.e(TAG, "PdM error: " + e.getMessage(), e);
}
}
public void onBufferingUpdate(MediaPlayer arg0, int percent) {
Log.d(TAG, "onBufferingUpdate percent:" + percent);
}
public void onCompletion(MediaPlayer arg0) {
Log.d(TAG, "onCompletion called");
}
public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {
Log.v(TAG, "onVideoSizeChanged called");
if (width == 0 || height == 0) {
Log.e(TAG, "invalid video width(" + width + ") or height(" + height + ")");
return;
}
mIsVideoSizeKnown = true;
mVideoWidth = width;
mVideoHeight = height;
if (mIsVideoReadyToBePlayed && mIsVideoSizeKnown) {
startVideoPlayback();
}
}
public void onPrepared(MediaPlayer mediaplayer) {
Log.d(TAG, "onPrepared called");
mIsVideoReadyToBePlayed = true;
if (mIsVideoReadyToBePlayed && mIsVideoSizeKnown) {
startVideoPlayback();
}
}
public void surfaceChanged(SurfaceHolder surfaceholder, int i, int j, int k) {
Log.d(TAG, "surfaceChanged called");
}
public void surfaceDestroyed(SurfaceHolder surfaceholder) {
Log.d(TAG, "surfaceDestroyed called");
}
public void surfaceCreated(SurfaceHolder holder) {
Log.d(TAG, "surfaceCreated called");
playVideo(extras.getInt(MEDIA));
}
@Override
protected void onPause() {
super.onPause();
releaseMediaPlayer();
doCleanUp();
}
@Override
protected void onDestroy() {
super.onDestroy();
releaseMediaPlayer();
doCleanUp();
}
private void releaseMediaPlayer() {
if (mMediaPlayer != null) {
mMediaPlayer.release();
mMediaPlayer = null;
}
}
private void doCleanUp() {
mVideoWidth = 0;
mVideoHeight = 0;
mIsVideoReadyToBePlayed = false;
mIsVideoSizeKnown = false;
}
private void startVideoPlayback() {
Log.v(TAG, "startVideoPlayback");
holder.setFixedSize(mVideoWidth, mVideoHeight);
mMediaPlayer.start();
}
Can somebody check it out and hopefully tell me where I went wrong. I’ve debugging it for hours but with no result. Every help appreciated !
@Dr.Dredel: i don’t know how to do that
Hereby the logcat-contents and thanks for helping:
D/AndroidRuntime(496): Shutting down VM
W/dalvikvm(496): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
E/AndroidRuntime(496): Uncaught handler: thread main exiting due to uncaught exception
E/AndroidRuntime(496): java.lang.NullPointerException
E/AndroidRuntime(496): at org.apache.android.media.VideoViewDemo.surfaceCreated(VideoViewDemo.java:133)
E/AndroidRuntime(496): at android.view.SurfaceView.updateWindow(SurfaceView.java:454)
E/AndroidRuntime(496): at android.view.SurfaceView.dispatchDraw(SurfaceView.java:287)
E/AndroidRuntime(496): at android.view.ViewGroup.drawChild(ViewGroup.java:1529)
E/AndroidRuntime(496): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258)
E/AndroidRuntime(496): at android.view.ViewGroup.drawChild(ViewGroup.java:1529)
E/AndroidRuntime(496): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258)
E/AndroidRuntime(496): at android.view.View.draw(View.java:6538)
E/AndroidRuntime(496): at android.widget.FrameLayout.draw(FrameLayout.java:352)
E/AndroidRuntime(496): at android.view.ViewGroup.drawChild(ViewGroup.java:1531)
E/AndroidRuntime(496): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258)
E/AndroidRuntime(496): at android.view.ViewGroup.drawChild(ViewGroup.java:1529)
E/AndroidRuntime(496): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258)
E/AndroidRuntime(496): at android.view.View.draw(View.java:6538)
E/AndroidRuntime(496): at android.widget.FrameLayout.draw(FrameLayout.java:352)
E/AndroidRuntime(496): at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:1830)
E/AndroidRuntime(496): at android.view.ViewRoot.draw(ViewRoot.java:1349)
E/AndroidRuntime(496): at android.view.ViewRoot.performTraversals(ViewRoot.java:1114)
E/AndroidRuntime(496): at android.view.ViewRoot.handleMessage(ViewRoot.java:1633)
E/AndroidRuntime(496): at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime(496): at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime(496): at android.app.ActivityThread.main(ActivityThread.java:4363)
E/AndroidRuntime(496): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(496): at java.lang.reflect.Method.invoke(Method.java:521)
E/AndroidRuntime(496): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
E/AndroidRuntime(496): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
E/AndroidRuntime(496): at dalvik.system.NativeStart.main(Native Method)
I/dalvikvm(496): threadid=7: reacting to signal 3
E/dalvikvm(496): Unable to open stack trace file '/data/anr/traces.txt': Permission denied
D/MediaPlayerDemo(521): surfaceCreated called
D/AndroidRuntime(521): Shutting down VM
W/dalvikvm(521): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
E/AndroidRuntime(521): Uncaught handler: thread main exiting due to uncaught exception
E/AndroidRuntime(521): java.lang.NullPointerException
E/AndroidRuntime(521): at org.apache.android.media.VideoViewDemo.surfaceCreated(VideoViewDemo.java:134)
E/AndroidRuntime(521): at android.view.SurfaceView.updateWindow(SurfaceView.java:454)
E/AndroidRuntime(521): at android.view.SurfaceView.dispatchDraw(SurfaceView.java:287)
E/AndroidRuntime(521): at android.view.ViewGroup.drawChild(ViewGroup.java:1529)
E/AndroidRuntime(521): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258)
E/AndroidRuntime(521): at android.view.ViewGroup.drawChild(ViewGroup.java:1529)
E/AndroidRuntime(521): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258)
E/AndroidRuntime(521): at android.view.View.draw(View.java:6538)
E/AndroidRuntime(521): at android.widget.FrameLayout.draw(FrameLayout.java:352)
E/AndroidRuntime(521): at android.view.ViewGroup.drawChild(ViewGroup.java:1531)
E/AndroidRuntime(521): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258)
E/AndroidRuntime(521): at android.view.ViewGroup.drawChild(ViewGroup.java:1529)
E/AndroidRuntime(521): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258)
E/AndroidRuntime(521): at android.view.View.draw(View.java:6538)
E/AndroidRuntime(521): at android.widget.FrameLayout.draw(FrameLayout.java:352)
E/AndroidRuntime(521): at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:1830)
E/AndroidRuntime(521): at android.view.ViewRoot.draw(ViewRoot.java:1349)
E/AndroidRuntime(521): at android.view.ViewRoot.performTraversals(ViewRoot.java:1114)
E/AndroidRuntime(521): at android.view.ViewRoot.handleMessage(ViewRoot.java:1633)
E/AndroidRuntime(521): at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime(521): at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime(521): at android.app.ActivityThread.main(ActivityThread.java:4363)
E/AndroidRuntime(521): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(521): at java.lang.reflect.Method.invoke(Method.java:521)
E/AndroidRuntime(521): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
E/AndroidRuntime(521): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
E/AndroidRuntime(521): at dalvik.system.NativeStart.main(Native Method)
I/dalvikvm(521): threadid=7: reacting to signal 3
E/dalvikvm(521): Unable to open stack trace file '/data/anr/traces.txt': Permission denied
I/Process(521): Sending signal. PID: 521 SIG: 9
D/MediaPlayerDemo(547): surfaceCreated called
D/AndroidRuntime(547): Shutting down VM
W/dalvikvm(547): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
E/AndroidRuntime(547): Uncaught handler: thread main exiting due to uncaught exception
E/AndroidRuntime(547): java.lang.NullPointerException
E/AndroidRuntime(547): at org.apache.android.media.VideoViewDemo.surfaceCreated(VideoViewDemo.java:134)
E/AndroidRuntime(547): at android.view.SurfaceView.updateWindow(SurfaceView.java:454)
E/AndroidRuntime(547): at android.view.SurfaceView.dispatchDraw(SurfaceView.java:287)
E/AndroidRuntime(547): at android.view.ViewGroup.drawChild(ViewGroup.java:1529)
E/AndroidRuntime(547): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258)
E/AndroidRuntime(547): at android.view.ViewGroup.drawChild(ViewGroup.java:1529)
E/AndroidRuntime(547): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258)
E/AndroidRuntime(547): at android.view.View.draw(View.java:6538)
E/AndroidRuntime(547): at android.widget.FrameLayout.draw(FrameLayout.java:352)
E/AndroidRuntime(547): at android.view.ViewGroup.drawChild(ViewGroup.java:1531)
E/AndroidRuntime(547): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258)
E/AndroidRuntime(547): at android.view.ViewGroup.drawChild(ViewGroup.java:1529)
E/AndroidRuntime(547): at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1258)
E/AndroidRuntime(547): at android.view.View.draw(View.java:6538)
E/AndroidRuntime(547): at android.widget.FrameLayout.draw(FrameLayout.java:352)
E/AndroidRuntime(547): at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:1830)
E/AndroidRuntime(547): at android.view.ViewRoot.draw(ViewRoot.java:1349)
E/AndroidRuntime(547): at android.view.ViewRoot.performTraversals(ViewRoot.java:1114)
E/AndroidRuntime(547): at android.view.ViewRoot.handleMessage(ViewRoot.java:1633)
E/AndroidRuntime(547): at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime(547): at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime(547): at android.app.ActivityThread.main(ActivityThread.java:4363)
E/AndroidRuntime(547): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(547): at java.lang.reflect.Method.invoke(Method.java:521)
E/AndroidRuntime(547): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
E/AndroidRuntime(547): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
E/AndroidRuntime(547): at dalvik.system.NativeStart.main(Native Method)
I/dalvikvm(547): threadid=7: reacting to signal 3
E/dalvikvm(547): Unable to open stack trace file '/data/anr/traces.txt': Permission denied
I/Process(547): Sending signal. PID: 547 SIG: 9
I’ve face the same problem today.
All I needed to do, was to remove the parameter of the playVideo method and to update the surfaceCreated method by removing the “extras.getInt()”.
By doing this I can play video but I still don’t know what the extras is used for…
Hope this helps