How to pass the touch event to superview when userInteractionEnabled = YES?

Question

I have the following setup.

+- XXXCustomControl : UIControl -------+
| A                                    |
|   +- ContentView -------------------+|
|   |         


        

Answer 1

Use this in super view, without changing subviews code (since subviews may be introduced from other frameworks or pods):

- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event
{
    UIView *view = [super hitTest:point withEvent:event];
    if ([view isDescendantOfView:self])
    {
        NSLog(@"touched inside");
    }
    return view;
}

Answer 2

You can use another UIView to "hide" the subview.

*Details : This UIView is the subview's sibling . it has the same size and position of your subview with background color of clear color.

*Explain: The new UIView will take the touch, and automatically pass it to the superview.

This way doesn't need to subclass your subview - it's a storyboard solution.
Please try this. Have fun!

Answer 3

- Swift

override func point(inside point: CGPoint, with event: UIEvent?) -> Bool {
    if <#condition#> { return true }
    else { return false }
}

Answer 4

You could try overriding the pointInside:withEvent: method in your inner view. This will allow you to return NO when you want to forward touches to the superview:

-(BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event
{
    if( /* You have content, and you want to receive touches */){
        return YES;
    }else{
        return NO;
    }
}

Answer 5

You can subclass your subview, and implement

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    if (!touchedContent) {
        [[self nextResponder] touchesBegan:touches withEvent:event];
    } else {
        [super touchesBegan:touches withEvent:event];
    }
}

Answer 6

If you want to handle the event from superview(XXXCustomControl in your case) instead of inner view(ContentView in your case), you can write the following swift code in your superview:

override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
    guard let view = super.hitTest(point, with: event) else { return nil }
    if view.isDescendant(of: self) {
        // your custom logic
    }
    return view
}