android 全屏视频播放（SurfaceView ＋ MediaPlayer）

介绍个第三方：

JieCaoVideoPlayer

　　实现Android的全屏视频播放，支持完全自定义UI、手势修改进度和音量、hls、rtsp，设置http头信息，也能在ListView、ViewPager和ListView、ViewPager和Fragment等多重嵌套模式下全屏工作，占用空间非常小，不到60k。

本次是通过 SurfaceView + MediaPlayer 实现 横屏 全屏 播放。

//注意修改：

WindowFeature下的：Window.FEATURE_NO_TITLE, Window.FEATURE_INDETERMINATE_PROGRESS

Fullscreen

AndroidManifest.xml下activity节点添加android:screenOrientation="landscape"

1）通过 AudioManager 控制视频声音。

2）通过getWindow().getAttributes().screenBrightness 获取当前亮度，通过继承SimpleOnGestureListener手势监听onScroll，onSingleTapUp事件，

重新生成

 WindowManager.LayoutParams lpa = getWindow().getAttributes();
 if (lpa.screenBrightness > 1.0f)
 lpa.screenBrightness = 1.0f;
 else if (lpa.screenBrightness < 0.01f)
 lpa.screenBrightness = 0.01f;

 getWindow().setAttributes(lpa);

3）activity oncreate 进行初始化 MediaPlayer， SurfaceView Holder

 if (mediaPlayer == null) {
             mediaPlayer = new MediaPlayer();
             // 不维持自身缓冲区，直接显示
             // this value only use Hardware decoder before Android 2.3
             if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB
                     && mHardwareDecoder) {
                 sv_videoplayer.getHolder().setType(
                         SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
             }
             sv_videoplayer.getHolder().setFixedSize(
                     ScreenUtils.getScreenHeight(this),
                     ScreenUtils.getScreenWidth(this));

             sv_videoplayer.getHolder().setFormat(PixelFormat.RGBA_8888);

             sv_videoplayer.getHolder().setKeepScreenOn(true);
             sv_videoplayer.getHolder().addCallback(new SurFaceCallback());
         }

4）调用 MediaPlayer 进行播放

 mediaPlayer.reset();
             mediaPlayer.setDataSource(playUrl);
             mediaPlayer.setDisplay(sv_videoplayer.getHolder());
             // 缓冲
             mediaPlayer.prepareAsync();
             mediaPlayer
                     .setOnBufferingUpdateListener(new BufferingUpdateListener());
             mediaPlayer.setOnPreparedListener(new PreparedListener(position));
             mediaPlayer.setOnCompletionListener(new CompletionListener());

5）在缓冲就绪初始化MediaController

 /**
      * //调用该方法,MediaPlayer就进入了"准备就绪" //状态,准备开始播放. //此处可用于动态设置SurfaceView的宽和高
      *
      */
     private final class PreparedListener implements OnPreparedListener {
         private int position;

         public PreparedListener(int position) {
             this.position = position;
         }

         @Override
         public void onPrepared(MediaPlayer arg0) {
             // TODO Auto-generated method stub
             //MediaController进行设置和使用
             mMediaController.setMediaPlayer(VideoPlayerActivity.this);
             mMediaController.setAnchorView(findViewById(R.id.rl_video_player));
             mMediaController.setEnabled(true);
             mMediaController.show();
             mediaPlayer.start();
             mProgressBar.setVisibility(View.GONE);
             mLoadRate.setVisibility(View.GONE);
             if (position > 0)
                 mediaPlayer.seekTo(position);
         }

     }

6）显示缓冲百分比

 private final class BufferingUpdateListener implements
             OnBufferingUpdateListener {

         @Override
         public void onBufferingUpdate(MediaPlayer arg0, int percent) {
             // TODO Auto-generated method stub
             mLoadRate.setText(percent + "%");
         }
     }

7）使用getHolder().addCallback(new SurFaceCallback())，继承Callback，

SurfaceView 所在Activity 离开了前台，SurfaceView会被destory。当Activity又重新

回到前台时，SurfaceView会被重新创建，SurfaceView是在onResume（）方法之后被创建。

防止视频过程中，电话来到，导致视频播放失败。

 private final class SurFaceCallback implements Callback {

         @Override
         public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2,
                 int arg3) {

         }

         @Override
         public void surfaceCreated(SurfaceHolder arg0) {
             if (mediaPlayer == null) {
                 return;
             }
             if (playUrl != null && position > 0) {
                 play(position);
                 position = 0;
             }
         }

         @Override
         public void surfaceDestroyed(SurfaceHolder arg0) {
             if (mediaPlayer == null) {
                 return;
             }
             if (mediaPlayer.isPlaying()) {
                 mediaPlayer.stop();
             }
         }
     }