Google about pickers
http://stackoverflow.com/questions/5533078/timepicker-in-preferencescreen
Author: arvifox
Publishing signing app
A flowchart for background work, alarms
A flowchart for background work, alarms, and your Android app
Pro-tip by +Ian Lake
For many apps, doing work in the background can be an important part of building a great experience. Continue reading A flowchart for background work, alarms