IOS UIScrollView cancel UIButton touch on scroll

Jeff's solution wasn't quite working for me, but this similar one does: http://charlesharley.com/2013/programming/uibutton-in-uitableviewcell-has-no-highlight-state

In addition to overriding touchesShouldCancelInContentView in your scroll view subclass, you still need to set delaysContentTouches to false. Lastly, you need to return true rather than false for your buttons. Here's a modified example from the above link. As commenters suggested, it checks for any subclass of UIControl rather than UIButton specifically so that this behavior applies to any type of control.

Objective-C:

- (instancetype)initWithFrame:(CGRect)frame {
    if (self = [super initWithFrame:frame]) {
        self.delaysContentTouches = false;
    }

    return self;
}

- (BOOL)touchesShouldCancelInContentView:(UIView *)view {
    if ([view isKindOfClass:UIControl.class]) {
        return true;
    }

    return [super touchesShouldCancelInContentView:view];
}

Swift 4:

override func touchesShouldCancel(in view: UIView) -> Bool {
    if view is UIControl {
        return true
    }
    return super.touchesShouldCancel(in: view)
}

From Apple's doc for UIControlEvents:

1. UIControlEventTouchCancel

   A system event canceling the current touches for the control.

2. UIControlEventTouchDown

   A touch-down event in the control.

3. UIControlEventTouchDownRepeat

   A repeated touch-down event in the control; for this event the value of the UITouch tapCount method is greater than one.

4. UIControlEventTouchDragEnter

   An event where a finger is dragged into the bounds of the control.

5. UIControlEventTouchDragExit

   An event where a finger is dragged from within a control to outside its bounds.

6. UIControlEventTouchDragInside

   An event where a finger is dragged inside the bounds of the control.

7. UIControlEventTouchDragOutside

   An event where a finger is dragged just outside the bounds of the control.

8. UIControlEventTouchUpInside

   A touch-up event in the control where the finger is inside the bounds of the control.

9. UIControlEventTouchUpOutside

   A touch-up event in the control where the finger is outside the bounds of the control.