Question

Is there a way to know if the application did become active from a local notification?

I know there is a way to test if the application was launched from a local notification alert; but if it just was sitting out there the background, and received a notification?

I need to run different code, when the app has become active:

1. From a local notification.
2. Just has become active 🙂

Is there a way to do it?

Answer 1

I’m afraid Sylter is incorrect. When an app enters the foreground from the background, either by a direct user action or by a user response to a UILocalNotification, it does not trigger applicationDidFinishLaunchingWithOptions. It does, however, call applicationWillEnterForeground and applicationDidBecomeActive. This can be verified with a couple of NSLogs.

So, the problem remains: if an app is entering the foreground from the background, there is no way to discover if the app is entering the foreground in response to a user’s response to a UILocalNotification, or if it is merely entering the foreground. Except…

Once the app has entered the foreground, it will receive the method application:DidReceiveLocalNotification: if the app entered the foreground in response to a UILocalNotification.

The problem is that any UI changes made within the application:DidReceiveLocalNotification: method in response to receiving the UILocalNotification occur after the app has already entered the foreground, creating a disturbing experience for the user.

Has anyone found a solution?