Orientation in a UIView added to a UIWindow

Question

I have a UIView which is supposed to cover the whole device (UIWindow) to support an image zoom in/out effect I\'m doing using core animation where a user taps a button on a

Answer 1

I created a category on UIApplication that has a helper property and method for getting the first subview of the keyWindow. This is the view you want to overlay anyway. Now when you add a view that is managed by a UIViewController to that view, the shouldRotateToInterfaceOrientation: method is called.

UIApplication+WindowOverlay.h

#import 

@interface UIApplication(WindowOverlay)

    @property (nonatomic, readonly) UIView *baseWindowView;

    -(void)addWindowOverlay:(UIView *)view;

@end

UIApplication+WindowOverlay.m

#import "UIApplication+WindowOverlay.h"

@implementation UIApplication(WindowOverlay)

    -(UIView *)baseWindowView{
        if (self.keyWindow.subviews.count > 0){
            return [self.keyWindow.subviews objectAtIndex:0];
        }
        return nil;
    }

    -(void)addWindowOverlay:(UIView *)view{
        [self.baseWindowView addSubview:view];
    }
@end

and here is how you would use it.

//at the top of the file...or in {yourproject}.pch
#import "UIApplication+WindowOverlay.h

//in a method:

UIView *view = [UIView new];

UIView *window = [UIApplication sharedApplication].baseWindowView;

view.frame = window.bounds;

[window addSubview:view];

//or

[[UIApplication sharedApplication] addWindowOverlay:view];