title: How to make Android application should not exit
body: <p>Is there any option in android like we should give to user to close
  the application , i.e using forcestop or uninstall.</p>
  
  <p>I want to create app in such a mean that once install the user should
  not uninstall and should not stop.</p>
  
  <p>Is there any way to implement service to run allways in background.</p>