健康养老网站建设,网上接手袋做是哪一个网站,用vue框架做的网站,广告怎么做从网上看了很多资料#xff0c;发现好多都是错误的#xff0c;所以今天特意更新这个问题的原因#xff0c; 在播放mediaPlayer.start()时SurfaceHolder没有来的及调用onCreate()方法创建view#xff0c;导致holder没有成功加载#xff0c;因为mediaplayer是在SurfaceHold…从网上看了很多资料发现好多都是错误的所以今天特意更新这个问题的原因 在播放mediaPlayer.start()时SurfaceHolder没有来的及调用onCreate()方法创建view导致holder没有成功加载因为mediaplayer是在SurfaceHolder上面播放的所以才抛出播放异常。贴出正确代码 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() {Overridepublic void surfaceCreated(SurfaceHolder holder) {Log.d(TAG, surfaceCreated System.currentTimeMillis());try {mediaPlayer.setDataSource(mDescriptor.getFileDescriptor(), mDescriptor.getStartOffset(), mDescriptor.getLength());mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);//设置播放声音类型mediaPlayer.prepare();mediaPlayer.setDisplay(mSurfaceView.getHolder());} catch (IOException e) {e.printStackTrace();}}Overridepublic void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {Log.d(TAG, surfaceChanged System.currentTimeMillis());}Overridepublic void surfaceDestroyed(SurfaceHolder holder) {Log.d(TAG, surfaceDestroyed System.currentTimeMillis());}});mediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {Overridepublic void onPrepared(MediaPlayer mp) {Log.d(TAG, onPrepared System.currentTimeMillis());mediaPlayer.start();}});mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {Overridepublic void onCompletion(MediaPlayer mp) {Log.d(TAG, times onCompletion System.currentTimeMillis());mediaPlayer.release();}});}
medialplayer播放的生命周期
surfaceCreated—-SurfaceHolder被创建只要在SurfaceHolder被创建的时候做设置就可以避免The surface has been released问题。 surfaceChanged——SurfaceHolder发生改变 onPrepared—-mediaPlayer准备ok onCompletion—–mediaPlayer播放完成 surfaceDestroyed—–SurfaceHolder被销毁。 有什么问题请各位指出谢谢
