title: Android Periodic Sensor Data
body: <p>For an Android App, that will show the value of an internal sensor (e.g. Acceleration) in a graph, i need to find a way to access this signal periodically.
  At the moment i am using a <code>SensorEventListener</code>, but unfortunately this only gives me the possibility to get a value whenever it changes. 
  Since I want to display the graph (point to point) in dependency of the time, this means it would directly draw a line from the old to the new value (and if the old value has been a long time, it looks like a linear changing of the value).
  So my question: How can I get access to a sensor's data periodically?</p>