applicationDidBecomeActive current screen

Question

How can I determine what controller/window is currently in the applicationDidBecomeActive? For example on the login screen (which is a LoginViewController), if the applicationDidBecomeActive fires how do I know it is the login screen from the appDelegate?

Answer 1

The UIApplication object passed to applicationDidBecomeActive has a windows property. It is an NSArray of visible windows, ordered back to front.

Once you have the foreground window, you can get the first subview and test its type:

if ([[foregroundWindow.subviews objectAtIndex:0] class] == [LoginViewController.view class]) {
    ...
}