title: android-- how to use the measure getPressure
body: <p>I have a problem with how to use the measure-- getPressure of the MotionEvent. I want to measure the pressure that is applied to the screen when a user touches it. Can anybody give me some sample or so.</p>
  
  <p>One more question:
     the return of <code>getPressure:1.0</code> is defined by the strongest press or by the device.</p>