disConnect method
void
disConnect()
与设备断开连接
Implementation
void disConnect() {
if (_state != DeviceState.destroyed && _state == DeviceState.connected) {
//已连接才能去断开连接
_state = DeviceState.disConnecting; //将设备状态置为断开连接中
_stateStreamController.add(DeviceState.disConnecting); //广播状态变化
FlutterBlueElves.instance._channel
.invokeMethod('disConnect', {"id": _id}); //去与该设备断开连接
}
}