android 全屏视频播放（SurfaceView ＋ MediaPlayer）

介绍个第三方：

　　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

1 WindowManager.LayoutParams lpa = getWindow().getAttributes();
2 if (lpa.screenBrightness > 1.0f)
3 lpa.screenBrightness = 1.0f;
4 else if (lpa.screenBrightness < 0.01f)
5 lpa.screenBrightness = 0.01f;
6 
7 getWindow().setAttributes(lpa);

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

 1 if (mediaPlayer == null) {
 2             mediaPlayer = new MediaPlayer();
 3             // 不维持自身缓冲区，直接显示
 4             // this value only use Hardware decoder before Android 2.3
 5             if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB
 6                     && mHardwareDecoder) {
 7                 sv_videoplayer.getHolder().setType(
 8                         SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
 9             }
10             sv_videoplayer.getHolder().setFixedSize(
11                     ScreenUtils.getScreenHeight(this),
12                     ScreenUtils.getScreenWidth(this));
13 
14             sv_videoplayer.getHolder().setFormat(PixelFormat.RGBA_8888);
15 
16             sv_videoplayer.getHolder().setKeepScreenOn(true);
17             sv_videoplayer.getHolder().addCallback(new SurFaceCallback());
18         }

4）调用 MediaPlayer 进行播放

1 mediaPlayer.reset();
2             mediaPlayer.setDataSource(playUrl);
3             mediaPlayer.setDisplay(sv_videoplayer.getHolder());
4             // 缓冲
5             mediaPlayer.prepareAsync();
6             mediaPlayer
7                     .setOnBufferingUpdateListener(new BufferingUpdateListener());
8             mediaPlayer.setOnPreparedListener(new PreparedListener(position));
9             mediaPlayer.setOnCompletionListener(new CompletionListener());

5）在缓冲就绪初始化MediaController

 1 /**
 2      * //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
 3      * 
 4      */
 5     private final class PreparedListener implements OnPreparedListener {
 6         private int position;
 7 
 8         public PreparedListener(int position) {
 9             this.position = position;
10         }
11 
12         @Override
13         public void onPrepared(MediaPlayer arg0) {
14             // TODO Auto-generated method stub
15             //MediaController进行设置和使用  
16             mMediaController.setMediaPlayer(VideoPlayerActivity.this);  
17             mMediaController.setAnchorView(findViewById(R.id.rl_video_player));  
18             mMediaController.setEnabled(true);  
19             mMediaController.show(); 
20             mediaPlayer.start();
21             mProgressBar.setVisibility(View.GONE);
22             mLoadRate.setVisibility(View.GONE);
23             if (position > 0)
24                 mediaPlayer.seekTo(position);
25         }
26 
27     }

6）显示缓冲百分比

1 private final class BufferingUpdateListener implements
2             OnBufferingUpdateListener {
3 
4         @Override
5         public void onBufferingUpdate(MediaPlayer arg0, int percent) {
6             // TODO Auto-generated method stub
7             mLoadRate.setText(percent + "%");
8         }
9     }

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。

 1 private final class SurFaceCallback implements Callback {
 2 
 3         @Override
 4         public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2,
 5                 int arg3) {
 6 
 7         }
 8 
 9         @Override
10         public void surfaceCreated(SurfaceHolder arg0) {
11             if (mediaPlayer == null) {
12                 return;
13             }
14             if (playUrl != null && position > 0) {
15                 play(position);
16                 position = 0;
17             }
18         }
19 
20         @Override
21         public void surfaceDestroyed(SurfaceHolder arg0) {
22             if (mediaPlayer == null) {
23                 return;
24             }
25             if (mediaPlayer.isPlaying()) {
26                 mediaPlayer.stop();
27             }
28         }
29     }