Question

注意：当我发布这个问题时，我不在我工作的公司工作，因此，尽管可能会有一些很好的答案   因为我没有理由，所以我实际上不会测试它们   （除了宣传社区;这可能会让我做到这一点   天）。

但是，如果有其他许多人提出问题的答案   社区成员，我可能会选择将其作为正确答案   这个问题在我最初发布之后经历了这么多年   问题

与此同时，我希望有些答案可能对你们中的一些人有所帮助   遇到这个问题。 Yay for Stack Overflow！

我们的应用程序必须从在线资源流式播放音乐（我无权透露该来源）。

为什么在S3上开始流式播放需要2分钟以上？

由于 MEDIA_ERROR_UNKOWN ，我已经能够确定Media Player对象进入错误状态 - 很棒。对我帮助不大。因此，在使用OnErrorListener处理onError时，我重置了Media Player对象，然后调用startPlaying来完成剩下的工作 - 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Visualizer - 这不是针对此问题的问题）

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();
    }



}

停止播放：

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

Answer 1

这个问题的答案证明是安装在运行Android 4.1.2的Samsung S III设备上的Android固件的问题。

它似乎与流的来源有关，因为某些来源最终在设备上播放，但我们需要的那个，从未玩过。

如果你可以从其他来源获取你的流，它应该可以工作。

因此，如果您正在为特定公司/目的开发应用程序并对流的源进行一些控制，或者可以与控制流源的人员进行通信，请让他们更改源的来源。流式传输到运行Android 4.1.2的三星S III上。

除此之外，所有解决此问题的方法都是固件升级。

Answer 2

对于每个都在努力解决这个问题的人来说，这就是解决方案：

Android MediaPlayer takes long time to prepare and buffer

编辑：以前的解决方案不是很完整，因为有时可能会在播放器暂停和恢复时听到播放器“断断续续”。

100％更优雅的Java答案涉及使用MediaCodec实例将mp3转换为PCM数据以提供给AudioTrack实例。

我在这里发布了完整的源代码和解释：http://www.piterwilson.com/blog/2014/03/15/mediacodec-mediaextractor-and-audiotrack-to-the-rescue/

Answer 3

我通过使用库解决了这个问题编译＆＃39; com.devbrackets.android：exomedia：3.0.1＆＃39;

Answer 4

对于一些在旧款三星手机上获得-1004的明确解决方案：

在我的情况下，我使用三星Galaxy Pocket并在我们的CDN上有一个mp3文件，它不会播放，即

http://domain/path/audiofile

然而，当将文件下载到手机时，它会在原生播放器中播放。不过，不是在我的应用中而是在浏览器中。 原来，媒体播放器服务需要一个文件扩展名来提示媒体类型，并且无法根据文件标题进行自动检测。

我通过给文件位置一个实际的扩展名来解决它。

http://domain/path/audiofile.mp3

<强>解决方案

将文件提供给托管的扩展程序（如上所述）或
以编程方式手动下载文件，在SD卡上给它正确的扩展名，然后从sdcard作为源播放。

MediaPlayer错误（1，-1004）又称MEDIA_ERROR_IO试图在三星S3上播放音乐

4 个答案: