void activityDataValueChanged(GattCharacteristic sender, GattValueChangedEventArgs args)
{
if (args.CharacteristicValue == null)
{
return;
}
byte[] buffer = new byte[args.CharacteristicValue.Length];
DataReader.FromBuffer(args.CharacteristicValue).ReadBytes(buffer);
if (activityTracker != null)
{
activityTracker.Write(buffer, buffer.Length);
}
if (onActivityDataCallback != null)
{
onActivityDataCallback();
}
}