Attempt to invoke virtual method 'android.view.ViewParent android.widget.FrameLayout.getParent()' on a null object reference

[rohitrvayuz]

This error comes on Android only. Works fine on iOS.

When I initiate or join a video call from Android for the very first time, then everything works fine. I am able to see the remote video as well as local video. But if I disconnect and try to initiate/join the call the 2nd time then I am not able to view my local video and it throws this error in the log.

Android 9, 10

Flutter Version - 2.5.3

enx_flutter_plugin: ^1.9.4

I use EnxRtc.disconnect(); to disconnect from the call.

This works fine on iOS but throws this exception on Android only

---

onEventInfo

[onEventInfo] {msg: Invaid Frame Rate, result: 5088, desc: Failed to initiate stream with invalid Frame Rate. Max Frame Rate is 30}

---

_addEnxrtcEventHandlers

`
void _addEnxrtcEventHandlers() async {
EnxRtc.onRoomConnected = (Map<dynamic, dynamic> map) async {
log('${map.toString()}', name: 'onRoomConnected', error: map);

  setState(() {
    EnxRtc.publish();
  });
};

EnxRtc.onRemoteStreamAudioMute = (Map<dynamic, dynamic> map) {
  log('onRemoteStreamAudioMute',
      name: 'onRemoteStreamAudioMute', error: map.toString());
  setState(() {
    try {
      isRemoteAudioMuted = map['user']['audioMuted'];
    } catch (e) {}
  });
  showFlushBar(
    context,
    0,
    '$otherUserName muted their audio',
    durationInMilliseconds: flushbarDurationInMilliseconds,
    flushbarPosition: FlushbarPosition.TOP,
  );
};

EnxRtc.onRemoteStreamAudioUnMute = (Map<dynamic, dynamic> map) {
  log('onRemoteStreamAudioUnMute',
      name: 'onRemoteStreamAudioUnMute', error: map.toString());
  setState(() {
    try {
      isRemoteAudioMuted = map['user']['audioMuted'];
    } catch (e) {}
    showFlushBar(
      context,
      1,
      '$otherUserName unmuted their audio',
      durationInMilliseconds: flushbarDurationInMilliseconds,
      flushbarPosition: FlushbarPosition.TOP,
    );
  });
};
EnxRtc.onRemoteStreamVideoMute = (Map<dynamic, dynamic> map) {
  setState(() {
    try {
      isRemoteVideoMuted = map['user']['videoMuted'];
    } catch (e) {}

    log('onRemoteStreamVideoMute',
        name: 'onRemoteStreamVideoMute', error: map.toString());
  });
  showFlushBar(
    context,
    0,
    '$otherUserName stopped their video',
    durationInMilliseconds: flushbarDurationInMilliseconds,
    flushbarPosition: FlushbarPosition.TOP,
  );
};

EnxRtc.onRemoteStreamVideoUnMute = (Map<dynamic, dynamic> map) {
  setState(() {
    try {
      isRemoteVideoMuted = map['user']['videoMuted'];
    } catch (e) {}
    log('${map['user']['videoMuted']}',
        name: 'onRemoteStreamVideoUnMute', error: map.toString());
  });
};

EnxRtc.onRoomError = (Map<dynamic, dynamic> map) {
  setState(() {
    log('onRoomError', name: 'onRoomError', error: map.toString());
  });
};

EnxRtc.onRoomDisConnected = (Map<dynamic, dynamic> map) {
  log(map.toString(), name: 'onRoomDisConnected');
};

EnxRtc.onConnectionLost = (Map<dynamic, dynamic> map) {
  // In case connection lost due to internet lose
  setState(() {});
};

EnxRtc.onConnectionInterrupted = (Map<dynamic, dynamic> map) {
  // In case any interruption in connection
  setState(() {});
};

EnxRtc.onUserReconnectSuccess = (Map<dynamic, dynamic> map) {
  // When reconnect done successfully
  setState(() {});
};

EnxRtc.onPublishedStream = (Map<dynamic, dynamic> map) async {
  log(map.toString(), name: 'onPublishedStream');
  setState(() {
    EnxRtc.setupVideo(0, 0, true, 300, 200);
  });
};

EnxRtc.onStreamAdded = (Map<dynamic, dynamic> map) async {
  log(map.toString(), name: 'onStreamAdded');

  try {
    EnxRtc.switchMediaDevice('Speaker');
  } catch (e) {
    log('', name: 'onStreamAdded switch error', error: e);
  }

  String streamId = '';
  setState(() {
    streamId = map['streamId'];
  });
  EnxRtc.subscribe(streamId);
};

EnxRtc.onNotifyDeviceUpdate = (String deviceName) {
  log(deviceName, name: 'onNotifyDeviceUpdate');
  setState(() {});
};

EnxRtc.onActiveTalkerList = (Map<dynamic, dynamic> map) {
  log(map.toString(), name: 'onActiveTalkerList');
  final items = (map['activeList'] as List)
      .map((i) => new ActiveListModel.fromJson(i));
  if (items.length > 0) {
    setState(() {
      for (final item in items) {
        if (!_remoteUsers.contains(item.streamId)) {
          log(
            '_remoteUsers \n' + map.toString(),
            name: 'onActiveTalkerList',
          );
          _remoteUsers.add(item.streamId);
        }
      }
    });
  }
};

EnxRtc.onEventError = (Map<dynamic, dynamic> map) {
  setState(() {
    log(
      'onEventError',
      name: 'onEventError',
      error: map.toString(),
    );
  });
};

EnxRtc.onEventInfo = (Map<dynamic, dynamic> map) {
  log(map.toString(), name: 'onEventInfo');
  setState(() {});
};

EnxRtc.onUserConnected = (Map<dynamic, dynamic> map) {
  log(map.toString(), name: 'onUserConnected');
  otherUserName = map['name'];
  setState(() {
    didUserJoinCall = true;
    showFlushBar(
      context,
      1,
      '$otherUserName has joined the call',
      durationInMilliseconds: flushbarDurationInMilliseconds,
      flushbarPosition: FlushbarPosition.TOP,
    );
  });
};

EnxRtc.onUserDisConnected = (Map<dynamic, dynamic> map) async {
  log(map.toString(), name: 'onUserDisConnected');
  setState(() {
    _showAlert(
        context: context, message: '${map['name']} disconnected call');
  });
};

EnxRtc.onAudioEvent = (Map<dynamic, dynamic> map) {
  log(map.toString(), name: 'onAudioEvent');
  setState(() {
    if (map['msg'].toString().toLowerCase() == "audio off") {
      isAudioMuted = true;
    } else {
      isAudioMuted = false;
    }
  });
};

EnxRtc.onVideoEvent = (Map<dynamic, dynamic> map) {
  log(map.toString(), name: 'onVideoEvent');
  setState(() {
    if (map['msg'].toString().toLowerCase() == "video off") {
      isVideoMuted = true;
    } else {
      isVideoMuted = false;
    }
  });
};

}
`

---

disconnectRoom

EnxRtc.disconnect()

---

@jaykumarvcx @subratthayal @Vinodrajbhar @abhiramsk