初始化嵌入到应用中的YouTube播放器时出错

Question

我正在尝试构建需要打开YouTube视频的Android应用。我正在使用嵌入式YouTube播放器在我的应用中播放YouTube视频。 但我得到以下错误：

  

初始化YouTube播放器时出错   这个错误意味着什么？

public class MainActivity extends YouTubeBaseActivity implements
        YouTubePlayer.OnInitializedListener {
    public static final String API_KEY = "AIzaSyBx5WtljJM0xq4TRqEsSh-V0ltd0elfOSk";
    public static final String VIDEO_ID = "B-3e_Ynhwj4";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        YouTubePlayerView youTubePlayerView = (YouTubePlayerView) findViewById(R.id.youtube_view);
        youTubePlayerView.initialize(API_KEY, this);
    }
    @Override
    public void onInitializationFailure(YouTubePlayer.Provider provider, YouTubeInitializationResult result) {
        Toast.makeText(this, "Failured to Initialize!", Toast.LENGTH_LONG).show();
    }
    @Override
    public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer player, boolean wasRestored) {
        player.setPlayerStateChangeListener(playerStateChangeListener);
        player.setPlaybackEventListener(playbackEventListener);
        if (!wasRestored) {
            player.cueVideo(VIDEO_ID);
        }
    }
    private PlaybackEventListener playbackEventListener = new PlaybackEventListener() {
        @Override
        public void onBuffering(boolean arg0) {
        }
        @Override
        public void onPaused() {
        }
        @Override
        public void onPlaying() {
        }
        @Override
        public void onSeekTo(int arg0) {
        }
        @Override
        public void onStopped() {
        }
    };
    private YouTubePlayer.PlayerStateChangeListener playerStateChangeListener = new YouTubePlayer.PlayerStateChangeListener() {
        @Override
        public void onAdStarted() {
        }
        @Override
        public void onError(YouTubePlayer.ErrorReason arg0) {
        }
        @Override
        public void onLoaded(String arg0) {
        }
        @Override
        public void onLoading() {
        }
        @Override
        public void onVideoEnded() {
        }
        @Override
        public void onVideoStarted() {
        }
    };
}