代码如下：
public
class MainActivity extends Activity implements MediaPlayerControl {
?
????private VideoView videoView;
????private MediaController mediaController;
?
????@Override
????protected
void onCreate(Bundle savedInstanceState) {
????????// TODO Auto-generated method stub
????????super.onCreate(savedInstanceState);
????????setContentView(R.layout.mainactivity);
????????videoView = (VideoView) findViewById(R.id.videoView1);
????????mediaController = new MediaController(this);
????????videoView.setMediaController(mediaController);
????????// 判断是否挂载sdcard
????????if (Environment.getExternalStorageState().equals(
????????????????Environment.MEDIA_MOUNTED)) {
????????????File file = Environment.getExternalStorageDirectory();// sdcard根目录
????????????File videoFile = new File(file, "test.mp4");
????????????Uri uri = Uri.fromFile(videoFile);// 获取uri
????????????videoView.setVideoURI(uri);
????????}
????}
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????@Override
????public
boolean canPause() {
????????// TODO Auto-generated method stub
????????return
videoView.canPause();
????}
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????@Override
????public
boolean canSeekBackward() {
????????// TODO Auto-generated method stub
????????return
videoView.canSeekBackward();
????}
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????@Override
????public
boolean canSeekForward() {
????????// TODO Auto-generated method stub
????????return
videoView.canSeekForward();
????}
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????@Override
????public
int getAudioSessionId() {
????????// TODO Auto-generated method stub
????????return 0;
????}
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????@Override
????public
int getBufferPercentage() {
????????// TODO Auto-generated method stub
????????return 0;
????}
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????@Override
????public
int getCurrentPosition() {
????????// TODO Auto-generated method stub
????????return
videoView.getCurrentPosition();
????}
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????@Override
????public
int getDuration() {
????????// TODO Auto-generated method stub
????????return
videoView.getDuration();
????}
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????@Override
????public
boolean isPlaying() {
????????// TODO Auto-generated method stub
????????return
videoView.isPlaying();
????}
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????@Override
????public
void pause() {
????????// TODO Auto-generated method stub
????????if (videoView.isPlaying()) {
????????????videoView.pause();
????????}
????}
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????@Override
????public
void seekTo(int postion) {
????????// TODO Auto-generated method stub
????????videoView.seekTo(postion);
????}
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????@Override
????public
void start() {
????????// TODO Auto-generated method stub
????????videoView.start();
????}
}