Handle permissions change while in app

Question

I am having a hard time understanding the right way to handle a user changing a permission while my app is still running in the background.

In my app I have a location class that registers for location changes and when the location changes the status is sent to a server. However this runs in the background.

When my app is launched I check with the user if its ok to use location services and if so I proceed with setting up that class. However the user can background my app and go into settings and remove that permission. I can, and will certainly check that the permission is enabled in my location class before asking for a location from the location service to avoid a crash. However I am not in an activity when a location comes in so I am not sure how to prompt them that my app needs location services.

EDIT:

It does seem that android restarts your app if a permission has been revoked in settings. However I have confirmed that as of now android does NOT restart your app if a permission was granted though settings.

Answer 1

However I am not in an activity when a location comes in so I am not sure how to prompt them that my app needs location services.

Raise a Notification, alerting the user that your app cannot do its intended work without the permission that they revoked. Have the Notification tie into an Activity via a PendingIntent where the user will be able to grant that permission.

Answer 2

I read somewhere that your app gets killed when the user changes the permissions on Android-M so you can be sure that this won't change while your app is running. It will been killed when this changes.

As reference check this video: https://www.youtube.com/watch?v=f17qe9vZ8RM