如何在xamarin中使用Device Motion插件获取磁力仪的值？

var motion = CrossDeviceMotion.Current;
motion.Start(MotionSensorType.Magnetometer);

motion.SensorValueChanged += (sender, args) =>
{
    if (args.SensorType == MotionSensorType.Magnetometer)
    {
        var magnetometerData = args.Value as MagnetometerData;
        if (magnetometerData != null)
        {
            // 在这里处理磁力仪的数值
            double x = magnetometerData.MagneticField.X;
            double y = magnetometerData.MagneticField.Y;
            double z = magnetometerData.MagneticField.Z;
            // 可以根据需要进行进一步的处理
        }
    }
};