getNowDeviceDirection method
实时获取当前陀螺仪的陈列方位
Implementation
Future<UIDeviceOrientation?> getNowDeviceDirection() async {
var tempStr = await _channel.invokeMethod('getNowDeviceDirection');
var deviceOrientation = deviceOrientationMap[tempStr];
_currentDeviceOrientation =
deviceOrientation ?? UIDeviceOrientation.Unknown;
return _currentDeviceOrientation;
}