NoClassDefFoundError在Android 4.0,4.2,4.4上最小化Youtube播放器时崩溃

Question

问题：Youtube播放器在应用中最小化youtube播放器活动/片段时崩溃。

原因：Youtube播放器更新

代码

public class YouTubePlayerActivity extends YouTubeBaseActivity
    implements YouTubePlayer.OnInitializedListener {

 private static final int RECOVERY_DIALOG_REQUEST = 1;   
private final String TAG = YouTubePlayerActivity.class.getSimpleName();   
private YouTubePlayerView youTubeView;   
private String videoId;  
 private YouTubePlayer youtubePlayer;

  @Override   protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
        WindowManager.LayoutParams.FLAG_FULLSCREEN);

    setContentView(R.layout.activity_youtube_player);
    videoId = getIntent().getExtras().getString(Constants.BUNDLE_VIDEO_ID);

    youTubeView = (YouTubePlayerView) findViewById(R.id.youtube_view);
    youTubeView.initialize(Constants.YOUTUBE_API_KEY, this);

  }

  @Override   public void onInitializationFailure(YouTubePlayer.Provider provider,
                                      YouTubeInitializationResult errorReason) {
    Log.d(TAG, "on Initialization failure : " + errorReason);   }

  @Override   public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer player,
                                      boolean wasRestored) {
    youtubePlayer = player;
    youtubePlayer.setFullscreen(true);
    youtubePlayer.setShowFullscreenButton(false);
    youtubePlayer.setFullscreenControlFlags(YouTubePlayer.FULLSCREEN_FLAG_CONTROL_ORIENTATION
        | YouTubePlayer.FULLSCREEN_FLAG_CONTROL_SYSTEM_UI);
    if (!wasRestored) {
      youtubePlayer.loadVideo(videoId);
    }   }

  @Override   protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == RECOVERY_DIALOG_REQUEST) {
      youTubeView.initialize(Constants.YOUTUBE_API_KEY, this);
    }   }

  @Override   protected void onPause() {
    super.onPause();
    if(youtubePlayer != null) {
      youtubePlayer.pause();
    }   }

  @Override   protected void onDestroy() {
    super.onDestroy();
    if (youtubePlayer != null) {
      youtubePlayer.release();
    }   } }