How to add view in UIWindow?

Question

I wanted to add a view in UIWindow with following code:

 AppDelegate *delegate = (AppDelegate *)[UIApplication sharedApplication].delegate;
 UIWindo         


        

Answer 1

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...

Answer 2

Your windows needs to have a root view controller.

AppDelegate *delegate = (AppDelegate *)[UIApplication sharedApplication].delegate;

UIWindow *window = delegate.window;
UIViewController *controller = [[UIViewController alloc] init]; 
window.rootViewController = controller;
UIView *aView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 100, 100)];
aView.backgroundColor = [UIColor blackColor];
[controller.view addSubview:aView];

Answer 3

UIAlertView creates another UIWindow and set this window as key window when you call show method. So if you want to show your own alert view create a UIWindow instance show it and add your custom alert view to this newly created window.

Answer 4

You can add view using the following

[[[UIApplication sharedApplication] keyWindow] addSubview:YOUR_VIEW];

Answer 5

Try this code:

window = [[UIApplication sharedApplication].windows lastObject];

Replace the following code:

window = [[UIApplication sharedApplication].windows objectAtIndex:0];

Answer 6

You can try below code...for adding subview to window

UIView *aView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 100, 100)];
aView.backgroundColor = [UIColor blackColor];
[[UIApplication sharedApplication].keyWindow addSubview:aView];

//Removing

[aView removeFromSuperview];

Hope it helps you..!