1. 程式人生 > >The surface has been released錯誤原因(親測有效)

The surface has been released錯誤原因(親測有效)

從網上看了很多資料,發現好多都是錯誤的,所以今天特意更新這個問題的原因,
在播放mediaPlayer.start()時SurfaceHolder沒有來的及呼叫onCreate()方法建立view,導致holder沒有成功載入,因為mediaplayer是在SurfaceHolder上面播放的,所以才丟擲播放異常。貼出正確程式碼

 mSurfaceView = (SurfaceView) findViewById(R.id.surface_view);
        AssetManager assetManager = getAssets();
        try {
            mDescriptor = assetManager.openFd("test1.mp4"
); } catch (IOException e) { e.printStackTrace(); } mediaPlayer = new MediaPlayer(); mSurfaceView.getHolder().addCallback(new SurfaceHolder.Callback() { @Override public void surfaceCreated(SurfaceHolder holder) { Log.d(TAG, "surfaceCreated="
+ System.currentTimeMillis()); try { mediaPlayer.setDataSource(mDescriptor.getFileDescriptor(), mDescriptor.getStartOffset(), mDescriptor.getLength()); mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);//設定播放聲音型別 mediaPlayer.prepare(); mediaPlayer.setDisplay(mSurfaceView.getHolder()); } catch
(IOException e) { e.printStackTrace(); } } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { Log.d(TAG, "surfaceChanged=" + System.currentTimeMillis()); } @Override public void surfaceDestroyed(SurfaceHolder holder) { Log.d(TAG, "surfaceDestroyed=" + System.currentTimeMillis()); } }); mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() { @Override public void onPrepared(MediaPlayer mp) { Log.d(TAG, "onPrepared=" + System.currentTimeMillis()); mediaPlayer.start(); } }); mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() { @Override public void onCompletion(MediaPlayer mp) { Log.d(TAG, " times onCompletion=" + System.currentTimeMillis()); mediaPlayer.release(); } }); }

medialplayer播放的生命週期:
這裡寫圖片描述

surfaceCreated—-SurfaceHolder被建立,只要在SurfaceHolder被建立的時候做設定就可以避免The surface has been released問題。
surfaceChanged——SurfaceHolder發生改變
onPrepared—-mediaPlayer準備ok
onCompletion—–mediaPlayer播放完成
surfaceDestroyed—–SurfaceHolder被銷燬。
有什麼問題請各位指出,謝謝!