Question

Note: I already read some questions about the UIScrollView sending touches to the subviews (this included and although I have up voted, it’s not working as I intended anymore).

What I have: I have a UIScrollView with a Custom UIView (let’s call it A) inside which covers the entire UIScrollView. I am also allowed to put other custom UIViews inside the A.

On the code I am doing this:

[scrollView setDelaysContentTouches:YES];
scrollView.canCancelContentTouches = NO;

What is happening: At the moment my only issue is that, if I want to move a subview inside A, I have to touch it, wait, and then move it. Exactly as stated here:

Now, the behaviour changes depending on the “length in time” of the
first touch on the UIView. If it’s short, then the relative dragging
is managed as it was a scroll for the UIScrollView. If it’s long, then
I’m getting the touchesMoved: events inside my UIView.

What I want: The subviews inside A should always receive priority and I shouldn’t have to touch and wait. If I touch A and not a subview of it, I want the UIScrollView to receive the touches, like panning and moving around (the contentSize is bigger than the frame).

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Edit 1.0

The only reason for me to have this A view inside a generic UIScrollView, is because I want to be able to zoom in/out on the A view. So I am doing the following:

- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView {
    return customView; // this is the A view
}

In the beginning I didn’t had the A view inside the UIScrollView and the only thing I did was adding the A as a subView of my UIViewController's root view and everything went well. If there is another way to enable zoom in/out I will gladly accept the answer.

Answer 1

Note: Thank you all for your contributions, specially to Aaron Hayman.

I was able to figure it out by doing the following on the UIScrollView sub-class I had:

-(BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
{
   CGPoint pointOfContact = [gestureRecognizer locationInView:self];

    // The view with a tag of 200 is my A view.
    return (![[self hitTest:pointOfContact withEvent:nil] isEqual:[self viewWithTag:200]]);
}