ビデオアプリケーションを開発しています。最初のビデオ再生が完了した後、「OnCopletion」で新しいビデオを開始しようとしています。しかし、それは単に停止し(クラッシュしない)、何もしません。ログ:
10-19 09:44:49.056: ERROR/MediaPlayer(4654): setDataSource called in state 128
10-19 09:44:49.056: WARN/System.err(4654): Java.lang.IllegalStateException
10-19 09:44:49.056: WARN/System.err(4654): at Android.media.MediaPlayer.setDataSource(Native Method)
10-19 09:44:49.056: WARN/System.err(4654): at ru.osiris.BusAdvertising.BusAdvertisingActivity.onCompletion(BusAdvertisingActivity.Java:1255)
10-19 09:44:49.056: WARN/System.err(4654): at Android.media.MediaPlayer$EventHandler.handleMessage(MediaPlayer.Java:1304)
10-19 09:44:49.056: WARN/System.err(4654): at Android.os.Handler.dispatchMessage(Handler.Java:99)
10-19 09:44:49.056: WARN/System.err(4654): at Android.os.Looper.loop(Looper.Java:123)
10-19 09:44:49.056: WARN/System.err(4654): at Android.app.ActivityThread.main(ActivityThread.Java:4627)
10-19 09:44:49.056: WARN/System.err(4654): at Java.lang.reflect.Method.invokeNative(Native Method)
10-19 09:44:49.056: WARN/System.err(4654): at Java.lang.reflect.Method.invoke(Method.Java:521)
10-19 09:44:49.056: WARN/System.err(4654): at com.Android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.Java:868)
10-19 09:44:49.056: WARN/System.err(4654): at com.Android.internal.os.ZygoteInit.main(ZygoteInit.Java:626)
10-19 09:44:49.056: WARN/System.err(4654): at dalvik.system.NativeStart.main(Native Method)
どういう意味ですか?どうすれば修正できますか?私のコードがあります:
public class BusAdvertisingActivity extends Activity implements LocationListener, OnBufferingUpdateListener, OnCompletionListener,
OnPreparedListener, OnVideoSizeChangedListener, SurfaceHolder.Callback {
...
private MediaPlayer mMediaPlayer;
private SurfaceView mPreview;
private SurfaceHolder holder;
private String path;
private Bundle extras;
@Override
public void onCreate(Bundle icicle) {
mPreview = (SurfaceView) findViewById(R.id.surface);
holder = mPreview.getHolder();
holder.addCallback(this);
holder.setType(SurfaceHolder.SURFACE_TYPE_Push_BUFFERS);
extras = getIntent().getExtras();
}
public void surfaceCreated(SurfaceHolder holder) {
Log.d(TAG, "surfaceCreated called");
playVideo();
}
private void playVideo(Integer Media) {
Log.d(TAG, "playVideo called");
doCleanUp();
try {
File clip=new File(Environment.getExternalStorageDirectory(),
playList[FLcurrentVideo].substring(2, playList[FLcurrentVideo].length()-1)+".mp4");
path = clip.getAbsolutePath();
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, "error: " + e.getMessage(), e);
}
}
public void onCompletion(MediaPlayer arg0) {
Log.d(TAG, "onCompletion called");
FLcurrentVideo++;
File clip=new File(Environment.getExternalStorageDirectory(),
playList[FLcurrentVideo].substring(2, playList[FLcurrentVideo].length()-1)+".mp4");
path = clip.getAbsolutePath();
try {
Log.d ("111", path);
arg0.setDataSource(clip.getAbsolutePath()); //I got exception here
arg0.setDisplay(holder);
arg0.prepare();
arg0.setOnBufferingUpdateListener(this);
arg0.setOnCompletionListener(this);
arg0.setOnPreparedListener(this);
arg0.setOnVideoSizeChangedListener(this);
arg0.setAudioStreamType(AudioManager.STREAM_MUSIC);
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
私を助けてください。
この状態図が表示された場合( https://developer.Android.com/reference/Android/media/MediaPlayer.html#StateDiagram から取得):
reset()
を呼び出してアイドル状態に戻す必要があることがわかります。その後のみ、setDataSource()
を呼び出すことができます