注意:当我发布这个问题时,我不在我工作的公司工作,因此,即使可能会有一些很好的答案,我实际上也不会测试它们,因为我没有理由 (除了促进社区;这可能会让我有一天这样做)。
但是,如果该问题的某些答案被许多其他社区成员推广,我可能会选择它作为我最初发布该问题多年后遇到的问题的正确答案。
同时,我希望一些答案可以帮助你们中的一些人也遇到这个问题。是的,堆栈溢出!
我们的应用程序必须从在线来源流式传输音乐(我无权透露该来源)。
为什么在 S3 上开始流式传输需要超过 2 分钟?
我已经能够弄清楚 Media Player 对象由于MEDIA_ERROR_UNKOWN而进入错误状态- 太好了。对我帮助不大。因此,在使用 OnErrorListener 处理 onError 时,我重置了媒体播放器对象,然后调用 startPlaying 来完成其余的工作 - 设置数据源等。
成员:
private ProgressBar playSeekBar;
private ImageView ivPlay;
private ImageView ivPause;
private ImageView ivBuffer;
private MediaPlayer mPlayer;
private ImageView ivInfo;
private AudioManager audio;
初始化媒体播放器(和可视化器 - 这不是本问题的问题)
private void initialMediaPlayerAndVisualizer() {
Log.d(TAG, "Initial Media Player and Visualizer");
playSeekBar = (ProgressBar) findViewById(R.id.progressBar1);
playSeekBar.setMax(100);
playSeekBar.setVisibility(View.GONE);
mPlayer = new MediaPlayer();
Log.d(TAG, "Create onErrorListener");
MediaPlayer.OnErrorListener errorListener = new MediaPlayer.OnErrorListener() {
@Override
public boolean onError(MediaPlayer mp, int what, int extra) {
Log.d(TAG, "OnError - Error code: "+what+" Extra code: "+extra);
switch(what){
case -1004:
Log.d("Streaming Media", "MEDIA_ERROR_IO");
break;
case -1007:
Log.d("Streaming Media", "MEDIA_ERROR_MALFORMED");
break;
case 200:
Log.d("Streaming Media", "MEDIA_ERROR_NOT_VALID_FOR_PROGRESSIVE_PLAYBACK");
break;
case 100:
Log.d("Streaming Media", "MEDIA_ERROR_SERVER_DIED");
break;
case -110:
Log.d("Streaming Media", "MEDIA_ERROR_TIMED_OUT");
break;
case 1:
Log.d("Streaming Media", "MEDIA_ERROR_UNKNOWN");
break;
case -1010:
Log.d("Streaming Media", "MEDIA_ERROR_UNSUPPORTED");
break;
}
switch(extra){
case 800:
Log.d("Streaming Media", "MEDIA_INFO_BAD_INTERLEAVING");
break;
case 702:
Log.d("Streaming Media", "MEDIA_INFO_BUFFERING_END");
break;
case 701:
Log.d("Streaming Media", "MEDIA_INFO_METADATA_UPDATE");
break;
case 802:
Log.d("Streaming Media", "MEDIA_INFO_METADATA_UPDATE");
break;
case 801:
Log.d("Streaming Media", "MEDIA_INFO_NOT_SEEKABLE");
break;
case 1:
Log.d("Streaming Media", "MEDIA_INFO_UNKNOWN");
break;
case 3:
Log.d("Streaming Media", "MEDIA_INFO_VIDEO_RENDERING_START");
break;
case 700 :
Log.d("Streaming Media", "MEDIA_INFO_VIDEO_TRACK_LAGGING");
break;
}
Log.d("Streaming Media", "Reset media player");
mPlayer.reset();
// We need to link the visualizer view to the media player so that it displays something
mVisualizerManager = new VisualizerManager(context); //(VisualizerView) findViewById(R.id.visualizerView);
//Send the visualizerContainer to the Renderer
visualizerRenderer = new VisualizerRenderer(arrayVisualizer);
mVisualizerManager.addRenderer(visualizerRenderer);
try {
startPlaying();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return true;
}
};
Log.d(TAG, "Set error listener on Media Player object");
mPlayer.setOnErrorListener(errorListener);
// We need to link the visualizer view to the media player so that it displays something
mVisualizerManager = new VisualizerManager(context); //(VisualizerView) findViewById(R.id.visualizerView);
//Send the visualizerContainer to the Renderer
visualizerRenderer = new VisualizerRenderer(arrayVisualizer);
mVisualizerManager.addRenderer(visualizerRenderer);
try {
startPlaying();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
开始播放:
private void startPlaying () throws IllegalStateException, IOException, UnsupportedOperationException
{
if(mPlayer != null){
ivPause.setVisibility(View.INVISIBLE);
ivPlay.setVisibility(View.INVISIBLE);
ivBuffer.setVisibility(View.VISIBLE);
mVisualizerManager.link(mPlayer);
mPlayer.setOnBufferingUpdateListener(new OnBufferingUpdateListener() {
public void onBufferingUpdate(MediaPlayer mp, int percent) {
playSeekBar.setSecondaryProgress(percent);
Log.i("Buffering", "" + percent);
}
});
try {
mPlayer.setDataSource(theSource);
} catch (IllegalArgumentException e) {
Log.d(TAG, "Illegal Argument Exception: "+e);
e.printStackTrace();
} catch (IllegalStateException e) {
Log.d(TAG, "Illegal State Exception: "+e);
e.printStackTrace();
} catch (IOException e) {
Log.d(TAG, "IO Exception: "+e);
e.printStackTrace();
}
mPlayer.prepareAsync();
mPlayer.setOnPreparedListener(new OnPreparedListener() {
public void onPrepared(MediaPlayer mp) {
ivBuffer.setVisibility(View.INVISIBLE);
bars.setVisibility(View.INVISIBLE);
visualizerContainer.setVisibility(View.VISIBLE);
ivInfo.setImageResource(R.drawable.img_radio_info_online);
ivPause.setVisibility(View.VISIBLE);
ivPlay.setVisibility(View.INVISIBLE);
//Mute the video if the phone is muted.
if ((audio.getRingerMode() == AudioManager.RINGER_MODE_SILENT) || (audio.getRingerMode() == AudioManager.RINGER_MODE_VIBRATE)) {
mp.setVolume(0, 0);
Toast toast = Toast.makeText(context, R.string.device_muted, Toast.LENGTH_LONG);
toast.show();
}
mPlayer.start();
}
});
}else{
Log.d(TAG, "Media player is null.");
initialMediaPlayerAndVisualizer();
}
}
别玩了:
private void stopPlaying()
{
bars.setVisibility(View.VISIBLE);
visualizerContainer.setVisibility(View.INVISIBLE);
ivInfo.setImageResource(R.drawable.img_radio_info_offline);
ivPlay.setVisibility(View.VISIBLE);
ivPause.setVisibility(View.INVISIBLE);
mPlayer.stop();
mVisualizerManager.release();
mPlayer.release();
mPlayer = null;
}
一点日志:
05-21 16:26:23.600: I/Buffering(3921): 0
05-21 16:26:23.600: I/MediaPlayer(3921): Info (703,156)
05-21 16:26:23.600: I/MediaPlayer(3921): Info (701,0)
05-21 16:26:23.610: D/VisualizerRenderer(3921): Render columns
05-21 16:26:23.715: V/MediaPlayer(3921): message received msg=100, ext1=1, ext2=-110
05-21 16:26:23.715: E/MediaPlayer(3921): error (1, -110)
05-21 16:26:23.715: V/MediaPlayer(3921): callback application
05-21 16:26:23.715: V/MediaPlayer(3921): back from callback
05-21 16:26:23.725: D/VisualizerRenderer(3921): Render columns
05-21 16:26:23.725: E/MediaPlayer(3921): Error (1,-110)
05-21 16:26:23.725: D/MAIN(3921): OnError - Error code: 1 Extra code: -110
05-21 16:26:23.725: D/Streaming Media(3921): MEDIA_ERROR_UNKNOWN
05-21 16:26:23.725: D/Streaming Media(3921): Reset media player
05-21 16:26:23.725: V/MediaPlayer-JNI(3921): reset
05-21 16:26:23.725: V/MediaPlayer(3921): reset
05-21 16:26:23.730: D/VisualizerRenderer(3921): Divisions: 9
05-21 16:26:23.730: D/VisualizerManager(3921): Added te renderer
05-21 16:26:23.730: V/MediaPlayer-JNI(3921): get_session_id()
05-21 16:26:23.735: D/VisualizerManager(3921): Media player and visualizer linked
05-21 16:26:23.735: D/VisualizerManager(3921): Set capture listener
05-21 16:26:23.735: D/VisualizerManager(3921): Set on visualizer complete listener
05-21 16:26:23.740: V/MediaPlayer(3921): setVideoSurfaceTexture
05-21 16:26:23.740: V/MediaPlayer(3921): prepareAsync
05-21 16:26:25.285: V/MediaPlayer(3921): message received msg=3, ext1=0, ext2=0
05-21 16:26:25.285: V/MediaPlayer(3921): buffering 0
05-21 16:26:25.285: V/MediaPlayer(3921): callback application
05-21 16:26:25.285: V/MediaPlayer(3921): back from callback
05-21 16:26:25.330: I/Buffering(3921): 0
05-21 16:26:25.390: V/MediaPlayer(3921): message received msg=3, ext1=0, ext2=0
05-21 16:26:25.390: V/MediaPlayer(3921): buffering 0
05-21 16:26:25.390: V/MediaPlayer(3921): callback application
05-21 16:26:25.390: V/MediaPlayer(3921): back from callback
05-21 16:26:25.425: I/Buffering(3921): 0
05-21 16:26:25.490: V/MediaPlayer(3921): message received msg=3, ext1=0, ext2=0
05-21 16:26:25.490: V/MediaPlayer(3921): buffering 0
05-21 16:26:25.490: V/MediaPlayer(3921): callback application
05-21 16:26:25.490: V/MediaPlayer(3921): back from callback
...
05-21 16:26:52.585: I/Buffering(3921): 0
05-21 16:26:53.570: V/MediaPlayer(3921): message received msg=3, ext1=0, ext2=0
05-21 16:26:53.570: V/MediaPlayer(3921): buffering 0
05-21 16:26:53.570: V/MediaPlayer(3921): callback application
05-21 16:26:53.570: V/MediaPlayer(3921): back from callback
05-21 16:26:53.585: I/Buffering(3921): 0
05-21 16:26:54.570: V/MediaPlayer(3921): message received msg=3, ext1=0, ext2=0
05-21 16:26:54.570: V/MediaPlayer(3921): buffering 0
05-21 16:26:54.570: V/MediaPlayer(3921): callback application
05-21 16:26:54.570: V/MediaPlayer(3921): back from callback
05-21 16:26:54.570: V/MediaPlayer(3921): message received msg=200, ext1=702, ext2=0
05-21 16:26:54.570: W/MediaPlayer(3921): info/warning (702, 0)
05-21 16:26:54.570: V/MediaPlayer(3921): callback application
05-21 16:26:54.570: V/MediaPlayer(3921): back from callback
05-21 16:26:54.590: I/Buffering(3921): 0
05-21 16:26:54.590: I/MediaPlayer(3921): Info (702,0)
05-21 16:26:55.575: V/MediaPlayer(3921): message received msg=3, ext1=0, ext2=0
05-21 16:26:55.575: V/MediaPlayer(3921): buffering 0
05-21 16:26:55.575: V/MediaPlayer(3921): callback application
05-21 16:26:55.575: V/MediaPlayer(3921): back from callback
05-21 16:26:55.575: I/Buffering(3921): 0
05-21 16:26:56.575: V/MediaPlayer(3921): message received msg=3, ext1=0, ext2=0
05-21 16:26:56.575: V/MediaPlayer(3921): buffering 0
05-21 16:26:56.575: V/MediaPlayer(3921): callback application
05-21 16:26:56.575: V/MediaPlayer(3921): back from callback
05-21 16:26:56.585: I/Buffering(3921): 0
05-21 16:26:57.575: V/MediaPlayer(3921): message received msg=3, ext1=0, ext2=0
05-21 16:26:57.575: V/MediaPlayer(3921): buffering 0
05-21 16:26:57.575: V/MediaPlayer(3921): callback application
05-21 16:26:57.575: V/MediaPlayer(3921): back from callback
05-21 16:26:57.600: I/Buffering(3921): 0
05-21 16:26:57.930: V/MediaPlayer-JNI(3921): stop
05-21 16:26:57.930: V/MediaPlayer(3921): stop
05-21 16:26:57.930: D/VisualizerManager(3921): Released the visualizer
05-21 16:26:57.930: V/MediaPlayer-JNI(3921): release
05-21 16:26:57.930: V/MediaPlayer(3921): setListener
05-21 16:26:57.930: V/MediaPlayer(3921): disconnect
05-21 16:26:57.935: V/MediaPlayer(3921): destructor
05-21 16:26:57.935: V/MediaPlayer(3921): disconnect