CODEWITHSUNDEEP
androidandroid-service
krtkush
krtkush

Reputation: 1528

Is a service needed to trigger an alarm in an alarm app?

I'm making an alarm app and wondering if it is needed to implement a service to maintain an alarm to ring in the future. Can't 'PendingIntent' do the job? We can assign every alarm time a unique ID and it should ring.

The only case where I see a service is needed is when the phone reboots and we need a service to respond to the reboot broadcast by setting the alarms again as I assume rebooting will destroy the 'PendingIntent'.

Upvotes: 0

Views: 33

Answers (1)

matiash
matiash

Reputation: 55350

I assume you're referring to using AlarmManager.

Yes, you can supply a PendingIntent created from an Activity, and it should work. This is not recommended mainly for UX (and not technical) reasons -- unless your app is a timer, abruptly interrupting what the user is doing can be very annoying. Hence, a service is usually tasked with showing a notification when the alarm "sounds", and tapping on this alarm opens the activity.

As you indicated, you need to listen for BOOT_COMPLETED because alarms are wiped out when the device is restarted.

Upvotes: 1

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