Receiving touch events on more then one UIView simultaneously

Question

I have a bunch of UIViews stacked one upon the other(not nested). I want them all to react to touch, but it seems that the topmost view obscures the views benea

Answer 1

Touches are sent to a single view. That view can then optionally pass them up the responder chain. If you want to handle touches to a collection of views you should have them forward those events up to the next responder and have a common parent of all of them (or their view controller since the controller is also part of the responder chain) handle those touches.

https://developer.apple.com/library/mac/documentation/General/Devpedia-CocoaApp-MOSX/Responder.html

Answer 2

You can check if the touch is for your topmost view. If it doesn't you can call the same method of your superview. Something like [self.superview sameMethod:sameParameter].

Your topmost view has a method

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

Inside that method you are doing your logic right? Inside the method can't you check if the touch received is at your topmost view with

UITouch *touch = [touches anyObject];
[touch locationInView:self];

And if it doesn't you pass it to the superView's same method using

[self.superview touchesEnded:touches withEvent:event];