<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="app.com.myapplication.LocalVideoActivity">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="200dp">
<VideoView
android:id="@+id/videoView"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</RelativeLayout>
</RelativeLayout>

package app.com.myapplication;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.widget.MediaController;
import android.widget.Toast;
import android.widget.VideoView;
public class LocalVideoActivity extends AppCompatActivity {
private VideoView videoView ;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_local_video);
//本地的视频  需要在手机SD卡根目录添加一个 fl1234.mp4 视频
String videoUrl1 = Environment.getExternalStorageDirectory().getPath()+"/fl1234.mp4" ;
//网络视频
String videoUrl2 = Utils.videoUrl ;
Uri uri = Uri.parse( videoUrl2 );
videoView = (VideoView)this.findViewById(R.id.videoView );
//设置视频控制器
videoView.setMediaController(new MediaController(this));
//播放完成回调
videoView.setOnCompletionListener( new MyPlayerOnCompletionListener());
//设置视频路径
        videoView.setVideoURI(uri);
//开始播放视频
        videoView.start();
}
class MyPlayerOnCompletionListener implements MediaPlayer.OnCompletionListener {
@Override
public void onCompletion(MediaPlayer mp) {
Toast.makeText( LocalVideoActivity.this, "播放完成了", Toast.LENGTH_SHORT).show();
}
}
}

package app.com.myapplication;
/**
* Created by ${zyj} on 2016/4/19.
*/
public class Utils {
public static final String videoUrl = "http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4" ;
}