How to change the background image of an activity at regular interval in android?

I want to change the background image of the activity after every 30 seconds in android.

Does anyo开发者_StackOverflow中文版ne know, how to accomplish this?

Thanks in Advance, -Neha

This is possible using a Handler. The Android developer guide has some information on how to update the UI using a timer. Hope you find this useful!