Windows® Phone 8 Unleashed

Using the Motion Sensor

The sample code for this section follows the same pattern as the code for the gyroscope. The viewmodel’s Start method first tests whether the motion sensor is supported, and then creates a new Motion instance, subscribes to its CurrentValueChangedEvent, and calls its Start method. See the following excerpt:

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public void Start(){    if (!Motion.IsSupported)    {        MessageService.ShowMessage(            "Motion is not supported on this device.");        return;    }    motion = new Motion();    double interval = motion.TimeBetweenUpdates.TotalMilliseconds;    motion.CurrentValueChanged += HandleMotionCurrentValueChanged;    motion.Start();}

The Motion sensor’s TimeBetweenUpdates property ...