title: Updating UI from TimerTask
body: <p>I am implementing an application that get the location data in certain intervals of time and checks the location got is the destination. If current location is the destination I want to Toast or update a TextField. I used TimerTask for this. But it is not giving me the correct output. While I searched I saw that TimerTask cannot handle changes in the UI. Is there any way to solve my problem?
  I want to check in certain intervals and want to update UI</p>