Sending a running application to background programmatically

Question

Is it possible to send a activity into background programmatically in android?

I am creating a prank application that plays funny sounds after a specified time (inpu

Answer 1

To expand on the answer by @ns476, the reason you should play it from a service is that any Activity that is no longer in the foreground can be killed at any time by the OS. Please review the activity lifecycle.