Android: How to use AlarmManager

Question

I need to trigger a block of code after 20 minutes from the AlarmManager being set.

Can someone show me sample code on how to use an AlarmManager<

Answer 1

I wanted to comment but <50 rep, so here goes. Friendly reminder that if you're running on 5.1 or above and you use an interval of less than a minute, this happens:

Suspiciously short interval 5000 millis; expanding to 60 seconds

See here.