Android播放视频的三种方式

Uriuri = Uri.parse(Environment.getExternalStorageDirectory().getPath()+"/Test_Movie.m4v"); //调用系统自带的播放器  Intentintent = new Intent(Intent.ACTION_VIEW);  Log.v("URI:::::::::", uri.toString());  intent.setDataAndType(uri, "video/mp4");  startActivity(intent);

Uriuri = Uri.parse(Environment.getExternalStorageDirectory().getPath()+"/Test_Movie.m4v"); VideoViewvideoView = (VideoView)this.findViewById(R.id.video_view); videoView.setMediaController(new MediaController(this)); videoView.setVideoURI(uri); videoView.start(); videoView.requestFocus();

package demo.camera; import java.io.IOException; import android.app.Activity; import android.media.MediaPlayer; import android.media.MediaPlayer.OnCompletionListener; import android.media.MediaPlayer.OnErrorListener; import android.media.MediaPlayer.OnInfoListener; import android.media.MediaPlayer.OnPreparedListener; import android.media.MediaPlayer.OnSeekCompleteListener; import android.media.MediaPlayer.OnVideoSizeChangedListener; import android.os.Bundle; import android.os.Environment; import android.util.Log; import android.view.Display; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.widget.LinearLayout; /** * 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 VideoSurfaceDemoextends Activityimplements OnCompletionListener,OnErrorListener,OnInfoListener,  OnPreparedListener, OnSeekCompleteListener,OnVideoSizeChangedListener,SurfaceHolder.Callback{  private DisplaycurrDisplay;  private SurfaceViewsurfaceView;  private SurfaceHolderholder;  private MediaPlayerplayer;  private int vWidth,vHeight;  //private boolean readyToPlay = false;     public void onCreate(BundlesavedInstanceState){   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MediaPlayer   String dataPath = Environment.getExternalStorageDirectory().getPath()+"/Test_Movie.m4v";   try {    player.setDataSource(dataPath);    Log.v("Next:::", "surfaceDestroyed called");   } catch (IllegalArgumentException e) {    e.printStackTrace();   } catch (IllegalStateException e) {    e.printStackTrace();   } catch (IOException e) {    e.printStackTrace();   }   //然后，我们取得当前Display对象   currDisplay = this.getWindowManager().getDefaultDisplay();  }    @Override  public void surfaceChanged(SurfaceHolderarg0, int arg1, int arg2, int arg3) {   // 当Surface尺寸等参数改变时触发   Log.v("Surface Change:::", "surfaceChanged called");  }  @Override  public void surfaceCreated(SurfaceHolderholder) {   // 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();     }  @Override  public void surfaceDestroyed(SurfaceHolderholder) {      Log.v("Surface Destory:::", "surfaceDestroyed called");  }  @Override  public void onVideoSizeChanged(MediaPlayerarg0, 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");     }  @Override  public void onSeekComplete(MediaPlayerarg0) {   // seek操作完成时触发   Log.v("Seek Completion", "onSeekComplete called");     }  @Override  public void onPrepared(MediaPlayerplayer) {   // 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();   }  }  @Override  public boolean onInfo(MediaPlayerplayer, 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;  }  @Override  public boolean onError(MediaPlayerplayer, 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;  }  @Override  public void onCompletion(MediaPlayerplayer) {   // 当MediaPlayer播放完成后触发   Log.v("Play Over:::", "onComletion called");   this.finish();  } }