android 全屏视频播放（SurfaceView ＋ MediaPlayer）

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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();
}
}
}