Feature Request: Alarms

[brousch]

An API for setting an alarm and triggering an event sometime in the future.

Android: AlarmManager
Linux: cron
OSX: cron
Windows: Task Scheduler

[jtoledo1974]

I'd love that, really.

[trivedigaurav]

@jtoledo1974 I will be taking this up.

[jtoledo1974]

That's great!

Just a heads up: I tried to make it work myself, but IMHO Python for Android is not handling long values correctly so I couldn't get it to work. See kivy/python-for-android#229
I could see that the alarm had been registered with adb shell dumpsys alarm, but the callback was never called.

[trivedigaurav]

@jtoledo1974 I remember reading your update that you were able to get this working. Were you able to get the alarms working as well?

[jtoledo1974]

It is possible to set up alarms, you just have to come up with your own long integer to pass and not rely on System.currentTimeMillis().

For my own app I worked around it by using the AlarmManager.ELAPSED_REALTIME_WAKEUP rather than RTC_WAKEUP, since for that I can use SystemClock.elapsedRealtime() which doesn't create a problem unless the phone has been up for more than 22 days. That was good enough for me, and I didn't feel like having to mess with timezones to come up with the proper long RTC value to pass to the alarm manager.

My working code is at https://github.com/jtoledo1974/Planilla/blob/master/service/main.py#L150 . I'm very sorry that I didn't use English for variable names and comments. Hope you can follow along. Basically every alarma['hora'] is a datetime object at which I want to set up an alarm.

The python-for-android bug of not being able to deal with returned long integers larger than maxint still stands.

[trivedigaurav]

Thanks @jtoledo1974! I will try to build on it.

[dessant]

There has been a chat about a schedule facade, it is not evident how it should really work across platforms or if it fits in plyer.
https://botbot.me/freenode/kivy-dev/2015-05-05/?msg=38384258&page=1