Question

Is there a way to delay the screen capture made by iOS when app is entering background? The reason is that I’m sometimes showing a view when the user goes to home screen I want this view removed so it doesn’t show when app is resumed. The view in question is a SSHUDView (source code here) which I call dismissAnimated:NO in applicationWillResignActive. This actually works in the simulator but not on real device (the SSHUDView still shows when resuming). Anyone have a clue how to deal with this?

Answer 1

If you have a look at the SSHUDView implementation it uses a UIWindow instance to display the content; it makes it’s own UIWindow the key UIWindow:

[_hudWindow makeKeyAndVisible];

Which is probably why it’s so tricky to get rid of. You might try to do what SSHUDView does after it dismisses itself to return focus to the main window:

[[[[UIApplication sharedApplication] windows] objectAtIndex:0] makeKeyWindow];

When the hud view dismissed itself it sends resignKeyWindow to it’s private _hudWindow object, you could possibly try to get a handle on that before you return focus to the main window, like so:

[[[[UIApplication sharedApplication] windows] objectAtIndex:1] resignKeyWindow];

But it may cause unexpected problems because you’re bypassing the SSHUDView API…