I wanted to add a view in UIWindow with following code:
AppDelegate *delegate = (AppDelegate *)[UIApplication sharedApplication].delegate;
UIWindo
If are you using UINavigationController Use:
[self.navigationController.view.window addSubview:aView];
If are you using UITabBarController Use:
[self.tabBarController.view.window addSubview:aView];
In AppDelegate you can directly assign a view to window. In appDelegate didFinishLaunchingWithOptions method Use:
[self.window addSubview:aView];
Hope it helps...