Detect app opening?

Question

I have a Tab bar app with 3 view controllers and I use "viewWillAppear" to detect which view is opend.

When I close the app, it still works "in the background" and when I open the app again "viewWillAppear" is not detecting this opening.

Is there any other option to detect this opening? Thanks

Answer 1

You can observe the UIApplicationWillEnterForegroundNotification or implement applicationWillEnterForeground: in your app delegate.