Flutter Quickblox Flatter SDK-正在调用，但视频未流式传输

我是一个新手，这已经是几天了，我正在努力使用alpha sdk进行视频通话。我可以打电话，我可以听到音频，但无法播放视频（没有本地视频，也没有远程视频流）

所有权限都是从设置中授予应用的

Android手机到Android模拟器-音频正常，但没有视频 Android手机对Android手机-音频正常，但没有视频 Android手机到IOS模拟器-音频正常，但没有视频

• Sdk初始化很好

• 聊天室正在连接

• WebRTC init在调用之前工作正常

• 我打了个视频电话

    startCall(opponentIds) async{
  
    bool connected = await QB.chat.isConnected();
    print('starting call'+connected.toString());
    int sessionType = QBRTCSessionTypes.VIDEO;
  
    try {
      QBRTCSession session = await QB.webrtc.call(opponentIds, sessionType);
      print('starting call'+session.toString());
      sessionId = session.id;
      play(myQBUserId,opponentIds[0],session.id);
    } on PlatformException catch (e) {
      print('error while initializing call'+e.toString());
    }
  }
  

• ListenforCall

    _listenForCall() async {
    print('listening for call');
    String eventName = QBRTCEventTypes.CALL;
    try {
      await QB.webrtc.subscribeRTCEvent(eventName, (data) async {
        Map<String, Object> payloadMap = new Map<String, Object>.from(data["payload"]);
        Map<String, Object> sessionMap = new Map<String, Object>.from(payloadMap["session"]);
        String sessionId = sessionMap["id"];
        int initiatorId = sessionMap["initiatorId"];
        int callType = sessionMap["type"];
  
        setState(() {
          this.sessionId = sessionId;
          _incomingCall = true;
        });
        play(myQBUserId,initiatorId,sessionId);
      });
  
      await QB.webrtc.subscribeRTCEvent(QBRTCEventTypes.RECEIVED_VIDEO_TRACK, (data) async {
        Map<String, Object> payloadMap = new Map<String, Object>.from(data["payload"]);
        Map<String, Object> sessionMap = new Map<String, Object>.from(payloadMap["session"]);
        String sessionId = sessionMap["id"];
        int initiatorId = sessionMap["initiatorId"];
        int callType = sessionMap["type"];
  
        print('receiving video even from initiator:'+initiatorId.toString());
  
        this.sessionId = sessionId;
        setState(() {
          _callStarted = true;
        });
  
        await QB.webrtc.enableAudio(sessionId, enable: true);
  
        await QB.webrtc.enableVideo(sessionId, enable: true);
  
      });
  
    } on PlatformException catch (e) {
      print('error while listening for calls'+e.toString());
    }
  }
  

• 结束通话

    _endCall() async{
    try {
      QBRTCSession session = await QB.webrtc.hangUp(sessionId);
      setState(() {
        _callStarted = false;
        _incomingCall = false;
      });
    } on PlatformException catch (e) {
      // Some error occured, look at the exception message for more details
    }
  }
  

• 视频通话布局来自-

  _endCall() async{
  try {
    QBRTCSession session = await QB.webrtc.hangUp(sessionId);
    setState(() {
      _callStarted = false;
      _incomingCall = false;
    });
  } on PlatformException catch (e) {
    // Some error occured, look at the exception message for more details
  }
}

    RTCVideoViewController _localVideoViewController;
RTCVideoViewController _remoteVideoViewController;
...
child: new Container(
  margin: new EdgeInsets.fromLTRB(10.0, 10.0, 10.0, 10.0),
  width: 160.0,
  height: 160.0,
  child: RTCVideoView(
    onVideoViewCreated: _onLocalVideoViewCreated,
  ),
  decoration: new BoxDecoration(color: Colors.black54),
)
 
...

child: new Container(
  margin: new EdgeInsets.fromLTRB(10.0, 10.0, 10.0, 10.0),
  width: 160.0,
  height: 160.0,
  child: RTCVideoView(
    onVideoViewCreated: _onRemoteVideoViewCreated,
  ),
  decoration: new BoxDecoration(color: Colors.black54),
)
  
...

void _onLocalVideoViewCreated(RTCVideoViewController controller) {
  _localVideoViewController = controller;
}

void _onRemoteVideoViewCreated(RTCVideoViewController controller) {
  _remoteVideoViewController = controller;
}