Question

I’ve added a TapGestureRecognizer to my self.view:

    tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTap:)];
    tap.numberOfTapsRequired = 1;
    tap.numberOfTouchesRequired = 1;
    [self.view addGestureRecognizer:tap];
    [tap release];

The view contains a single UIScrollView with images and labels. I want to detect if the user taps on a label or not.

- (void)singleTap:(UIGestureRecognizer*)gestureRecognizer {

    CGPoint pt = [gestureRecognizer locationInView:self.view];

    UIView *v = [self.view hitTest:pt withEvent:nil];
    if ([v isKindOfClass:[UILabel class]]) {
        NSLog(@"label!");
        return;
    }   
    // else do other stuff if its not a label

However I don’t see the label! in my log.

Answer 1

I think it’s because userInteractionEnabled is by default NO on UILabels. Try turning that on.

EDIT: It was really a guess, but just to confirm, Apple docs on [UIView hitTest:withEvent:] state:

This method ignores view objects that are hidden, that have disabled user interaction, or have an alpha level less than 0.01.