Helpful category for finding a subview during a gesture

UIView+FindSubview.h

#import <UIKit/UIKit.h>

typedef BOOL (^TestViewCallback)(UIView*);

@interface UIView (FindSubview)

- (UIView*) findSubviewWithTest:(TestViewCallback)callback;
- (BOOL) hitByGesture:(UIGestureRecognizer*)recognizer;

@end

UIView+FindSubview.m

#import "UIView+FindSubview.h"

@implementation UIView (FindSubview)

- (UIView*) findSubviewWithTest:(TestViewCallback)callback
{
    UIView* view = nil;

    for (UIView *subview in self.subviews)
    {
        view = callback(subview) ? subview : [subview findSubviewWithTest:callback];
        if(view != nil) {
            break;
        }
    }

    return view;
}

- (BOOL) hitByGesture:(UIGestureRecognizer*)recognizer
{
    CGPoint point = [recognizer locationInView:self];
    return [self pointInside:point withEvent:nil];
}

@end