private static void OnJoinChanneNotifyCallback(int errorCode) { #if UNITY_STANDALONE_WIN || UNITY_STANDALONE_OSX if ((IAliRtcEngine.OnJoinChannelNotify != null) && AliRtcEngineCallBackQueue.Current != null) { AliRtcEngineCallBackQueue.Current.EnQueue(() => { IAliRtcEngine.OnJoinChannelNotify(errorCode); }); } #else if (instance != null && (instance.OnJoinChannelNotify != null) && AliRtcEngineCallBackQueue.Current != null) { AliRtcEngineCallBackQueue.Current.EnQueue(() => { instance.OnJoinChannelNotify(errorCode); }); } #endif }