我有一个媒体播放器作为成员变量的活动.

我的媒体播放器初始化如下：

mMediaPlayer = new MediaPlayer(); 
mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mMediaPlayer.setDataSource(MyActivity.this, URL); 
mMediaPlayer.prepareAsync(); 
//i set a on Prepared Listener to start playing on Prepared

一切正常,然后我覆盖我的活动onStop方法以发布Media Player.

if(mMediaPlayer!=null){
   if(mMediaPlayer.isPlaying()){
       mMediaPlayer.stop();
   }
   mMediaPlayer.release();
   mMediaPlayer=null;
}

但是在活动停止后,我从LeakCanary收到了内存泄漏报告.

该报告是这样的：

MyApp.Instance->

MyApp.mLoadedApk->

LoadedApk.mReceivers->

ArrayMap.mArray->

arrayObject[].[3]->

ArrayMap.mArray->

arrayObject[][0]->

MediaPlayer.mProxyReceiver->

MediaPlayer.mProxyContext->

leaks MyActivity instance.

MyApp.Instance->

MyApp.mLoadedApk->

LoadedApk.mReceivers->

ArrayMap.mArray->

arrayObject[].[3]->

ArrayMap.mArray->

arrayObject[][0]->

MediaPlayer.mProxyReceiver->

MediaPlayer.mProxyContext->

leaks MyActivity instance.

是的,我有一个扩展应用程序的MyApp类,并且在静态字段中持有对MyApp实例的引用,但是我从未在活动中使用该引用,如何解决此泄漏？

[编辑]

这是我的活动代码：

public class PlayActivity extends ActionBarActivity {

private MediaPlayer mediaPlayer;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_play);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}

@Override
protected void onStop() {
    super.onStop();
    if(mediaPlayer!=null){
        if(mediaPlayer.isPlaying()){
            mediaPlayer.stop();
        }
        mediaPlayer.release();
        mediaPlayer=null;
    }
}

public void playIt(View view){
    if(mediaPlayer==null){
        mediaPlayer = new MediaPlayer();
        mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
            @Override
            public void onPrepared(MediaPlayer mp) {
                mp.start();
            }
        });


    }
    if(!mediaPlayer.isPlaying()){
        mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
        try {
            mediaPlayer.setDataSource(PlayActivity.this, Uri.parse("http://www.noiseaddicts.com/samples_1w72b820/142.mp3"));
            mediaPlayer.prepareAsync();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }



   }

 }

解决方法:

在测试期间,我发现这是在HTTP流传输期间发生的.

当我检查目标上的MediaPlayer的源代码(在我的示例中为API19)时,确实存在一个StreamProxy实例正在设置和分配,但没有在release方法中释放,而仅在reset方法中释放.

这为我工作：

if (mediaPlayer != null) {
    mediaPlayer.reset();
    mediaPlayer.release();
    mediaPlayer = null;
}