如何在观察viewModel实时数据的活动中正确实现YoutubePlayer？

Question

我正在尝试在详细信息活动中加载YouTube视频。 我正在使用体系结构组件设计，首先必须从Web服务器获取视频密钥，然后才能加载它。

我的问题是： onInitializationSuccess在onCreate方法之前起作用，因此将在获取视频密钥之前加载视频。

我需要什么： 最好的情况下，实现YoutubePlayer的最佳方法。

我的课程

 public class MovieDetailsActivity extends AppCompatActivity implements 
   YouTubePlayer.OnInitializedListener{
     private  final String Tag = this.getClass().getSimpleName();
     private String m_movieId;
     private ImageView m_moviePoster;
     private MovieViewModel m_movieViewModel;
     private Context m_context;
     private CollapsingToolbarLayout m_collapsingToolBarLayout;
     private YouTubePlayerFragment m_youtubePlayerFragment;
     private LiveData<Movie> m_movie;
     private String m_videoPath;
     private boolean m_isPlayerInitialized = false;
     private YouTubePlayer.OnInitializedListener m_playerOnInitializedListener;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    m_context = getBaseContext();
    setContentView(R.layout.movie_details);
    if(getIntent().hasExtra("movieId")){
        m_movieId = getIntent().getStringExtra("movieId");
        setupView();
    }
    else{
        Log.d(Tag, "Invalid data from adapter.");
    }
}

private void setupView(){
    m_youtubePlayerFragment = (YouTubePlayerFragment) getFragmentManager().findFragmentById(R.id.youtube_fragment);
    m_youtubePlayerFragment.initialize(Settings.Google_API_KEY, this);
    m_collapsingToolBarLayout = (CollapsingToolbarLayout) findViewById(R.id.collapsingToolbar);
    m_movieViewModel = ViewModelProviders.of(this).get(MovieViewModel.class);
    m_moviePoster = (ImageView) findViewById(R.id.imageView);
    m_movieViewModel.getMovie(m_movieId).observe(this, new Observer<Movie>() {
         @Override
         public void onChanged(@Nullable Movie movie) {
             Picasso.with(m_context).load("http://image.tmdb.org/t/p/w500" + movie.getPosterPath())
                     .placeholder(R.drawable.ic_launcher_background)
                     .into(m_moviePoster);
             m_collapsingToolBarLayout.setTitle(movie.getTitle());
             m_videoPath = "http://www.youtube.com/watch?v=" + movie.getVideos().getResults().get(0).getKey();
         }
    });

}

@Override
public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer youTubePlayer, boolean b) {
    if(!b){
        m_isPlayerInitialized = true;
        youTubePlayer.cueVideo(m_videoPath);
    }

}

@Override
public void onInitializationFailure(YouTubePlayer.Provider provider, YouTubeInitializationResult youTubeInitializationResult) {
    if(youTubeInitializationResult.isUserRecoverableError()){
        Log.d(Tag ,"Loading Video Error" );
    }
    else{
        //;
    }
}

}