Pass an event on the whole view hierarchy

Question

I have created a "classic" category on ui controller to present in my way an other controller.

@interface UIViewController (QZPopup)
- (void)presentPopupViewController:(UIViewController *)viewControllerToPresent animated:(BOOL)flag completion:(void (^)(void))completion;
- (void)dismissPopupViewControllerAnimated:(BOOL)flag completion:(void (^)(void))completion;
@end

The category adds:

a blurred view on top of the calling controller view
an invisible view on top of all the screen. this invisible view must catch touch event to dismiss the popup and after having dismissed the popup, I also want to transmit this event to do anything required.

For my usage, I have a UIController embedded in a UINavigationBarController. I want to have the part below the navigation bar blurred and the navigation bar visible. A touch on the blurred view just dismiss and a touch on the navigation bar must dismiss AND do anything required by touched items in the navigationbar.

Visual is ok on my side, but I have trouble to pass the event and reach the navigationbar. For the moment I have subclassed UIView in QZPopupDismiss like below:

@implementation QZPopupDismiss {
    touchCallback _touchCompletion;
}

- (instancetype)initWithFrame:(CGRect)frame andTouchCompletion:(touchCallback)completion {
    if (self = [self initWithFrame:frame]) {
        _touchCompletion = completion;
        self.userInteractionEnabled = YES;
    }
    return self;
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {

    // first do the touch completion
    _touchCompletion();

    // pass the event to the view hierarchy
    [super touchesEnded:touches withEvent:event];
}
@end

But the fact is that, in touchsEnded, super does not reach the navigation bar. How can I pass my event to the whole view hierarchy to reach the navigation bar items ?

Pass an event on the whole view hierarchy

0 Answers0