Making activity runs in background

Question

I m new in android, I'm not much aware about services.i have an activity class with a UI, i want to make this activity class runs in background, when i click the back button. how to make my activity runs in background like a service, plz help me..

Answer 1

You cannot really run an Activity on background! When an activity is not on foreground it gets to onStop and then the system could terminate it, to release resources, by onDestroy method! see Activity Lifecycle

In order to run on background you need to create a Service or IntentService

Checkout android javadoc about Services here and here or IntentService

and here is a third-party Android Service Tutorial

Edit: you may also need a communication between your service and your activity so you can get through that: Example: Communication between Activity and Service using Messaging