UIScrollView with a UIButton and UITapGestureRecognizer - iphone

Question

I've been playing around with this code, but can't get it right.
Current behaviour: I can scroll around freely on a UIScrollView, even when tapping on buttons. When i tap on something that isn't a button, it calls a method (like i want it to), as a result of a UITapGestureRecognizer. However, i have to hold down on a button for a couple of seconds then touch up for it to trigger the button's UIControlEventTouchUpInside.
What I want to happen: Exactly the same, but to be able to touch the UIButton easily, like I can if i turn off the UITapGestureRecognizer on the view it's sitting on.
Here's my code:
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
//...
[cell.xButton addTarget:self action:#selector(xButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
self.delaysContentTouches = YES;
UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleTapFrom:)];
[self addGestureRecognizer:tapGestureRecognizer];
tapGestureRecognizer.delegate = self;
}
}
- (void) handleTapFrom: (UITapGestureRecognizer *)recognizer
{
[self.header removeKeyboard];
}

Answer 1

As stavash suggested, you could do the following:
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
UIView* touchedView = [touch view];
if([touchedView isKindOfClass:[UIButton class]]) {
return NO;
}
return YES;
}
This works in most cases. In addition you may want to check whether the touched view is a descendent of a the scroll view using isDescendantOfView:.
Hope it helps.

Answer 2

I think your answer is UIGestureRecognizerDelegate's method:
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
Check if the touch's view property is any of the UIButtons you are trying to avoid: if so return NO, otherwise return YES. Don't forget to assign the UITapGestureRecognizer's delegate so it works. Hope this helps.