我正在设计一个视频播放器应用程序，当用户通过onbackpressed（）或通过intentials按钮离开它使用另一个应用程序并可能稍后回来时，我似乎对该活动有问题。当用户转到另一个活动时，我希望视频播放暂停，当此活动再次获得焦点时，从暂停的位置完全恢复…我尝试用这些方法覆盖，但没有成功，请帮助。。。

public class video_player extends AppCompatActivity {
    VideoView main_screen;
    ListView filelist;
    DrawerLayout mydrawer;
    MediaController mc;
    TextView mytext;
    String video_name;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //Assign value to media controller
         mc=new MediaController(this);
        //Define VideoView
          main_screen = (VideoView) findViewById(R.id.videoplayer);
         Uri uri= Uri.parse(first);
         main_screen.setVideoURI(uri);
         mc.setAnchorView(main_screen);
         mc.setMediaPlayer(main_screen);
         main_screen.setMediaController(mc);
          //Start playback
         main_screen.start();
     }
//method to pause video when user goes to another activity

 protected void onSaveInstanceState(Bundle savedInstanceState){
     //Video can be paused but how do i save this to the outstate Bundle??
        super.onSaveInstanceState(savedInstanceState);
    }
//method to resume playback onrestore but am clueless
    @Override
    protected void onRestoreInstanceState(Bundle savedInstanceState){
        super.onRestoreInstanceState();
    }
@Override
    protected void onPause(){
        main_screen.pause();
        super.onPause();
    }
    @Override
    protected void onResume(){
        main_screen.resume();
        super.onResume();
    }
}

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