我試圖創建一個簡單的應用程序,它使用Cast伴侶庫在Chromecast上流式傳輸視頻。RemoteMediaPlayer媒體狀態爲null Cast Cast配套庫
我在做的事很簡單。 我有下面的代碼的活動:
private VideoCastManager mVideoCastManager;
@Override
protected void onCreate(Bundle savedInstanceState)
{
mVideoCastManager = CastHelper.getVideoCastManager(this);
}
和帶有一個方法叫做CastHelper
類:
private static final String APPLICATION_ID = CastMediaControlIntent.DEFAULT_MEDIA_RECEIVER_APPLICATION_ID;
private static VideoCastManager mCastMgr;
public static VideoCastManager getVideoCastManager(Context ctx)
{
if (mCastMgr == null)
{
mCastMgr = VideoCastManager.initialize(ctx, APPLICATION_ID, null, null);
mCastMgr.enableFeatures(VideoCastManager.FEATURE_NOTIFICATION
| VideoCastManager.FEATURE_DEBUGGING);
}
mCastMgr.setContext(ctx);
return mCastMgr;
}
當我啓動的應用程序,我在動作條的媒體按鈕,我可以選擇一個設備。但是,我有一個錯誤:
03-26 19:18:47.890: D/ccl_VideoCastManager(9874): Registering MediaChannel namespace
03-26 19:18:47.900: D/ccl_VideoCastManager(9874): onApplicationStatusChanged() reached: Ready To Cast
03-26 19:18:50.203: D/ccl_VideoCastManager(9874): RemoteMediaPlayer::onStatusUpdated() is reached
03-26 19:18:50.203: D/ccl_VideoCastManager(9874): onRemoteMediaPlayerStatusUpdated() reached
03-26 19:18:50.203: D/ccl_VideoCastManager(9874): mApiClient or mRemoteMediaPlayer is null, so will not proceed
其實這個問題是塊:
if (null == mApiClient || null == mRemoteMediaPlayer ||
null == mRemoteMediaPlayer.getMediaStatus()) {
LOGD(TAG, "mApiClient or mRemoteMediaPlayer is null, so will not proceed");
return;
}
的RemoteMediaPlayer情況是好的,但getMediaStatus
方法返回null。請注意,我還沒有加載媒體。
我在做什麼錯?
編輯 正如指出的阿里Naddaf,也許這代碼有什麼錯,但是當我添加VideoCastConsumerImpl
的onApplicationConnected
沒有被調用,所以我想這可能是原因。
IVideoCastConsumer mCastConsumer = new VideoCastConsumerImpl()
{
@Override
public void onConnected()
{
super.onConnected();
}
@Override
public void onApplicationConnected(ApplicationMetadata appMetadata, String sessionId, boolean wasLaunched)
{
super.onApplicationConnected(appMetadata, sessionId, wasLaunched);
//Trying to load a media here, but never called
}
};
mVideoCastManager.addBaseCastConsumer(mCastConsumer);
這是問題。它現在有效。謝謝! – Aerilys