Android Youtube Api更改VideoID

我工作的机器人Youtube Api.i成功创建了project.i可以播放视频,也可以点击按钮点击跳过视频.现在我添加了第二个按钮,在这个按钮点击我要更改onInitializationSuccess方法中的视频ID这是我的代码

public class MainActivity extends YouTubeBaseActivity implements
    YouTubePlayer.OnInitializedListener {

static private final String DEVELOPER_KEY = "***********";
private String VIDEO = "*****", VIDEO1 = "*****";
private Button b1, b2;;
private YouTubePlayer player1;

private PlayerStyle style;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    YouTubePlayerView youTubeView = (YouTubePlayerView) findViewById(R.id.youtube_view);
    b1 = (Button) findViewById(R.id.button1);
    b2 = (Button) findViewById(R.id.button2);

    youTubeView.initialize(DEVELOPER_KEY, this);
    youTubeView.setEnabled(false);
    style = PlayerStyle.CHROMELESS;
    b2.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

            int[] array = new int[] { 36000, 140000, 250000 };

            Random random = new Random();
            final int index = array[random.nextInt(array.length)];

            Log.e("randommmmmmmmmmmm", String.valueOf(index));

            player1.seekToMillis(index);

        }
    });
    b1.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

            int[] array = new int[] { 36000, 140000, 250000 };

            Random random = new Random();
            final int index = array[random.nextInt(array.length)];

            Log.e("randommmmmmmmmmmm", String.valueOf(index));
            // player1.loadVideo(VIDEO, index);
            player1.seekToMillis(index);


        }
    });
}

@Override
public void onInitializationFailure(Provider provider,
        YouTubeInitializationResult error) {
    Toast.makeText(this, "Oh no! " + error.toString(), Toast.LENGTH_LONG)
            .show();
}

@Override
public void onInitializationSuccess(Provider provider,
        YouTubePlayer player, boolean wasRestored) {
    this.player1 = player;
    player1.setPlayerStyle(style);

    player.loadVideo(VIDEO);
    if(b2.isFocused())
        player.loadVideo(VIDEO1);

}

}

我试着解决我的问题

player.loadVideo(VIDEO,index);

但在这种情况下,videoID已更改,但每次点击按钮时都会加载视频,如何在按钮点击中更改视频ID,每次都不加载视频？