how to use alarms to trigger tasks at specific times, whether or not your app is running when the alarms go off.
For example, you can use a repeating alarm to schedule a download every day at the same time.
To create alarms, you use the AlarmManager class. Alarms in Android have the following characteristics:
- Alarms let you send an Intent at set times or intervals. You can use alarms with broadcast receivers to start services and perform other operations.
- Alarms operate outside your app. You can use them to trigger events or actions even when your app isn't running, and even if the device is asleep.
- When used correctly, alarms can help you minimize your app's resource requirements. For example, you can schedule operations without relying on timers or continuously running background services.