How to get the active view in an iOS application from the app delegate?

Question

how can i get the currently active view (the main view currently being viewed by the user) from the app delegate for references sake?

Answer 1

UIWindow *window = [[UIApplication sharedApplication] keyWindow];
UIView *topView = window.rootViewController.view;

Answer 2

All top answers doesn't work with modal presented views! Use this code instead:

UIView * topView = [[[[UIApplication sharedApplication] keyWindow] subviews] lastObject];

Answer 3

It depends on how your app is set up.

Typically, your app delegate will have a main view controller property that will let you get to it.

To get your app delegate

MyAppDelegate *appDelegate = [[UIApplication sharedApplication] delegate];

UIView *topView = appDelegate.viewController.view;

If your app has a navigation controller property in the app delegate you can do something like this.

UIView *topView = appDelegate.navigationController.topViewController.view;