title: TimerTask and Handler, effect on battery consumption
body: <p>In  my application I  update a text box with the latitude/longitude values of the centre of the displayed Mapview. I'm doing this by means of a TimerTask which sends a message to to a handler every second.</p>
  
  <p>Is this an inefficient way of doing this, in terms of CPU load/battery consumption? </p>
  
  <p>If so is there a more efficient way of updating the text whenever the centre of the view changes? </p>
  
  <p>This is not connected with GPS, as in one mode of my app I can turn the GPS off and scroll and pan around the map.</p>