How can I make my android app run on the background?

Question

I build an application that collects data about the battery. In order to collect this data I need my application to run on the background in order to be able to collect this

Answer 1

 - @Override public int onStartCommand(Intent intent, int flags, int
   startId) {
       handleCommand(intent);
       // We want this service to continue running until it is explicitly
       // stopped, so return sticky.
       return START_STICKY; }