Video三种播放方式
1、使用其自带的播放器。指定Action为ACTION_VIEW,Data为Uri，Type为其MIME类型。
2、使用VideoView来播放。在布局文件中使用VideoView结合MediaController来实现对其控制。
3、使用MediaPlayer类和SurfaceView来实现。这种方式最灵活，也最复杂。
1、调用其自带的播放器：
Uri uri = Uri.parse(Environment.getExternalStorageDirectory().getPath()+"/Test_Movie.m4v");//调用系统自带的播放器Intent intent = new Intent(Intent.ACTION_VIEW);intent.setDataAndType(uri, "video/mp4");startActivity(intent);
Uri uri = Uri.parse(Environment.getExternalStorageDirectory().getPath()+"/Test_Movie.m4v");VideoView videoView = (VideoView)this.findViewById(R.id.video_view);videoView.setMediaController(new MediaController(this));videoView.setVideoURI(uri);//videoView.start();videoView.requestFocus();
/** * 该实例中使用MediaPlayer完成播放，同时界面使用SurfaceView来实现 * * 这里我们实现MediaPlayer中很多状态变化时的监听器 * * 使用Mediaplayer时，也可以使用MediaController类，但是需要实现MediaController.mediaController接口 * 实现一些控制方法。 * * 然后，设置controller.setMediaPlayer(),setAnchorView(),setEnabled(),show()就可以了，这里不再实现 * @author Administrator * */public class VideoSurfaceDemo extends Activity implements OnCompletionListener,OnErrorListener,OnInfoListener,OnPreparedListener, OnSeekCompleteListener,OnVideoSizeChangedListener,SurfaceHolder.Callback{private Display currDisplay;private SurfaceView surfaceView;private SurfaceHolder holder;private MediaPlayer player;private int vWidth,vHeight;//private boolean readyToPlay = false; public void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);this.setContentView(R.layout.video_surface); surfaceView = (SurfaceView)this.findViewById(R.id.video_surface);//给SurfaceView添加CallBack监听holder = surfaceView.getHolder();holder.addCallback(this);//为了可以播放视频或者使用Camera预览，我们需要指定其Buffer类型holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); //下面开始实例化MediaPlayer对象player = new MediaPlayer();player.setOnCompletionListener(this);player.setOnErrorListener(this);player.setOnInfoListener(this);player.setOnPreparedListener(this);player.setOnSeekCompleteListener(this);player.setOnVideoSizeChangedListener(this);Log.v("Begin:::", "surfaceDestroyed called");//然后指定需要播放文件的路径，初始化MediaPlayerString dataPath = Environment.getExternalStorageDirectory().getPath()+"/Test_Movie.m4v";try {player.setDataSource(dataPath);Log.v("Next:::", "surfaceDestroyed called");} catch (IllegalArgumentException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IllegalStateException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();} //然后，我们取得当前Display对象currDisplay = this.getWindowManager().getDefaultDisplay();} @Overridepublic void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {// 当Surface尺寸等参数改变时触发Log.v("Surface Change:::", "surfaceChanged called");}@Overridepublic void surfaceCreated(SurfaceHolder holder) {// 当SurfaceView中的Surface被创建的时候被调用//在这里我们指定MediaPlayer在当前的Surface中进行播放player.setDisplay(holder);//在指定了MediaPlayer播放的容器后，我们就可以使用prepare或者prepareAsync来准备播放了player.prepareAsync(); }@Overridepublic void surfaceDestroyed(SurfaceHolder holder) { Log.v("Surface Destory:::", "surfaceDestroyed called");}@Overridepublic void onVideoSizeChanged(MediaPlayer arg0, int arg1, int arg2) {// 当video大小改变时触发//这个方法在设置player的source后至少触发一次Log.v("Video Size Change", "onVideoSizeChanged called"); }@Overridepublic void onSeekComplete(MediaPlayer arg0) {// seek操作完成时触发Log.v("Seek Completion", "onSeekComplete called"); }@Overridepublic void onPrepared(MediaPlayer player) {// 当prepare完成后，该方法触发，在这里我们播放视频 //首先取得video的宽和高vWidth = player.getVideoWidth();vHeight = player.getVideoHeight(); if(vWidth > currDisplay.getWidth() || vHeight > currDisplay.getHeight()){//如果video的宽或者高超出了当前屏幕的大小，则要进行缩放float wRatio = (float)vWidth/(float)currDisplay.getWidth();float hRatio = (float)vHeight/(float)currDisplay.getHeight(); //选择大的一个进行缩放float ratio = Math.max(wRatio, hRatio); vWidth = (int)Math.ceil((float)vWidth/ratio);vHeight = (int)Math.ceil((float)vHeight/ratio); //设置surfaceView的布局参数surfaceView.setLayoutParams(new LinearLayout.LayoutParams(vWidth, vHeight)); //然后开始播放视频 player.start();}}@Overridepublic boolean onInfo(MediaPlayer player, int whatInfo, int extra) {// 当一些特定信息出现或者警告时触发switch(whatInfo){case MediaPlayer.MEDIA_INFO_BAD_INTERLEAVING:break;case MediaPlayer.MEDIA_INFO_METADATA_UPDATE: break;case MediaPlayer.MEDIA_INFO_VIDEO_TRACK_LAGGING: break;case MediaPlayer.MEDIA_INFO_NOT_SEEKABLE: break;}return false;}@Overridepublic boolean onError(MediaPlayer player, int whatError, int extra) {Log.v("Play Error:::", "onError called");switch (whatError) {case MediaPlayer.MEDIA_ERROR_SERVER_DIED:Log.v("Play Error:::", "MEDIA_ERROR_SERVER_DIED");break;case MediaPlayer.MEDIA_ERROR_UNKNOWN:Log.v("Play Error:::", "MEDIA_ERROR_UNKNOWN");break;default:break;}return false;}@Overridepublic void onCompletion(MediaPlayer player) {// 当MediaPlayer播放完成后触发Log.v("Play Over:::", "onComletion called");this.finish();}}