Alarmmanager when app is updated [duplicate]

Question

Im working on an app that uses AlarmManager for some processes. I wanted to ask that if i update my app on the playstore. (update not new install) will registered alarms get canceled? Also will values of SharedPreference get reset?

Answer 1

Alarms: Yes, they will get canceled but you can restart your alarms.

Here is the solution from this post https://stackoverflow.com/a/34464059/3474021

Have a broadcast receiver registered within your app with 2 intent filters namely:

1. android.intent.action.BOOT_COMPLETED (docs) - called when your device restarts. Alarms are cancelled when device is shut down.
2. android.intent.action.MY_PACKAGE_REPLACED (docs) - called once your app is reinstalled or updated from play store or from any source.

You will also need the permission android.permission.RECEIVE_BOOT_COMPLETED to receive android.intent.action.BOOT_COMPLETED. In this receiver you can start your alarms again.

SharedPreferences: No, they will remain when an app is updated.