Android 播放视频文件

 package com.example.myvideo2;

 import java.io.File;

 import android.app.Activity;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Environment;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.widget.Button;
 import android.widget.MediaController;
 import android.widget.MediaController.MediaPlayerControl;
 import android.widget.VideoView;
 /**
  * Android 播放视频
  * @Describe:
  * @package: com.example.myvideo2
  * @author shaobn
  * @date 2015-9-14 上午10:57:41
  */
 public class MainActivity extends Activity implements MediaPlayerControl {
     private VideoView videoView;
     private MediaController mediaController;
     private Button button;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         mediaController = new MediaController(MainActivity.this);
         videoView = (VideoView) this.findViewById(R.id.videoView1);
         button = (Button) this.findViewById(R.id.button1);
         videoView.setMediaController(mediaController);
         button.setOnClickListener(new View.OnClickListener() {

             @Override
             public void onClick(View arg0) {
                 // TODO Auto-generated method stub
                 if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){
                     File file1 = Environment.getExternalStorageDirectory();
                     File file2 = new File(file1,"/Movies/Video.mp4");
                     Uri uri = Uri.fromFile(file2);
                     videoView.setVideoURI(uri);
                 }
             }
         });

     }
     @Override
     public boolean canPause() {
         // TODO Auto-generated method stub
         return videoView.canPause();
     }
     @Override
     public boolean canSeekBackward() {
         // TODO Auto-generated method stub
         return videoView.canSeekBackward();
     }
     @Override
     public boolean canSeekForward() {
         // TODO Auto-generated method stub
         return videoView.canSeekForward();
     }
     @Override
     public int getAudioSessionId() {
         // TODO Auto-generated method stub
         return 0;
     }
     @Override
     public int getBufferPercentage() {
         // TODO Auto-generated method stub
         return 0;
     }
     @Override
     public int getCurrentPosition() {
         // TODO Auto-generated method stub
         return 0;
     }
     @Override
     public int getDuration() {
         // TODO Auto-generated method stub
         return 0;
     }
     @Override
     public boolean isPlaying() {
         // TODO Auto-generated method stub
         return videoView.isPlaying();
     }
     @Override
     public void pause() {
         // TODO Auto-generated method stub
         if (videoView.isPlaying()) {
             videoView.pause();
         }
     }
     @Override
     public void seekTo(int arg0) {
         // TODO Auto-generated method stub
         videoView.seekTo(arg0);
     }
     @Override
     public void start() {
         // TODO Auto-generated method stub
         videoView.start();
     }

 }

实现播放视频文件。