What distinguishes setAndAllowWhenIdle from RTC_WAKEUP in AlarmManager?

edit

Both setAndAllowWhenIdle and RTC_WAKEUP are types of alarms in AlarmManager that can be scheduled to trigger at a specific time.

The main difference between the two is that setAndAllowWhenIdle is designed for use in situations where the device is in an idle state (i.e. screen is off, no user interaction) and can conserve battery power by batching alarms and triggering them when the device is next awake. It also works around Android's Doze mode, which would typically delay non-critical alarms.

On the other hand, RTC_WAKEUP is designed for use when the device is not in an idle state, such as when the user is actively using the device. This type of alarm will trigger the device to wake up from sleep mode at the specified time, even if the device is currently sleeping or in Doze mode.

In summary, setAndAllowWhenIdle is intended for low-priority, non-critical alarms that can be batched and executed when the device is next awake, while RTC_WAKEUP is intended for high-priority, time-sensitive alarms that must be executed at a specific time, regardless of the device's current state.