Open Radar

 
Summary:
When a phone call ends while an application is running, the green double height status bar shrinks and the UIViewController adjusts the views' heights accordingly. However, there is no callback for if I need to programmatically react to this event (e g adjust an OpenGL view), even though there is [UIApplicationDelegate application:willChangeStatusBarFrame:], which sounds right but isn't.

Steps to Reproduce:
1. Implement [NSApplicationDelegate application:willChangeStatusBarFrame:] or [UIApplicationDelegate application:didChangeStatusBarFrame:] in the app delegate
2. Take a call
3. During the call, start your app
4. Have the other side hang up
5. The green status bar shrinks

Expected Results:
6. The callback is called, either before or after step 5, depending on which callback is implemented

Actual Results:
6. The callback isn't called, because it's only related to frame changes due to orientation changes, and not all instances of status bar frame changes such as due to an incoming call.

Notes:
I'm not sure why these callbacks even exist if all they do is react on orientation changes, given that [UIApplication application:will/didChangeStatusBarOrientation:duration:] exists for just that purpose.

This is a bug report on both the documentation and the API. The documentation for application:didChangeStatusBarFrame:really does explicitly say that it WILL be called when the status bar has changes, with no provision on what caused it, in contrast to in willChange.... where it says it's only for orientation changes.