Broadcastreceiver Behavior When Phone Is Asleep
Solution 1:
I am not quite certain what the behavior of a BroadcastReceiver, registered in the manifest and enabled via PackageManager, is when the phone is asleep.
Most broadcasts do not wake up the device.
which broadcasts are guaranteed to wake up a receiver when the phone has fallen asleep (as in left alone for quite some time)
I doubt that you will find a definitive list somewhere. The only broadcasts that I can recall that fit your description are SMS_RECEIVED and any triggered via AlarmManager and a broadcast PendingIntent.
and keep the phone awake as long as onReceive() runs
It is possible that SMS_RECEIVED has this behavior, but I do not know that for certain. The AlarmManager scenario definitely does.
(which of course should not be too long to avoid ANR).
It needs to be far shorter than that, as it will freeze your UI, if you happen to have the foreground activity. Anything more than a couple of milliseconds needs to be delegated to a service with a background thread, such as my WakefulIntentService.
As a bonus, I recently learned that some intents, flagged with FLAG_RECEIVER_REGISTERED_ONLY, are only delivered to dynamically registered Receivers - is there any place listing those intents ?
No, beyond the source code. Ones that come to mind include: ACTION_SCREEN_ON, ACTION_SCREEN_OFF, and ACTION_BATTERY_CHANGED.
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