Open Source β€’ Background Tasks: Itoo πŸš€

which time picker value did you try?
what is the timer interval you got displayed in Label3?
for debugging use logcat

EDIT: for an alarm example with itoo you also can try this

btw. usually you would use the alarmmanager feature of your Android device, which does not require to display a persistent notification... the Android system just will trigger your app at the given time "magically"... you coule use my paid alarmmanager extension for this...

Taifun