Attempt to present * on * whose view is not in the window hierarchy

Question

I\'m trying to make a modal view controller in my app delegate (I created a function called showLoginView). But whenever I try to call it I get a warning in XCode:

Answer 1

Another reason for that warning can be that you want to present a view controller from an instance which is not the top most view controller.

So first you have to get the topmost UIViewController and using this instance to call presentViewController:

UIViewController *root = [UIApplication sharedApplication].keyWindow.rootViewController;
while (root.presentedViewController) {
    root = root.presentedViewController;
}