Hi,

I'm developing an app that essentially is Paint style. The user touchs
the screen and can draw images. However I would like to measure the
speed of the user's movements. At the moment I take the distance
between the X and Y coordinates of the event.getX/Y  and the previous
values and calculate the difference. This is directly proportional to
the speed of the movement provided that the timing intervals of the
onTouchListener are constant. Is this the case for Android? I know for
iPhone the Listener actually changes it's frequency depending on the
input.

Furthermore if it is a constant value, does anyone know what it is? So
I can portray the speed in useful units (mm/sec) rather than an
arbitrary value.

Thanks,
Stuart

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