Question

I found this code (written in appdelegate for an application). All I want is to just let it support one more view ( I created it).

The code :

- (IBAction)swap
{
    NSArray *subs = [window subviews];
    [[subs objectAtIndex:0] removeFromSuperview];
    if([subs objectAtIndex:0] == view2){
        [window addSubview:view1];
    } else if([subs objectAtIndex:0] == view1){
        [window addSubview:view2];
    }
}

Answer 1

- (IBAction)swap
{
    NSArray *subs = [window subviews];
    UIView *currentView = (UIView *)[subs objectAtIndex:0];
    [currentView removeFromSuperview];
    if(currentView == view1){
        [window addSubview:view2];
    } else if(currentView == view2){
        [window addSubview:view3];
    } else 
        [window addSubview:view1];
    }
}