Question

I’ve got a UIButton in my application called myButton. I’d like to react to a single finger tap and a two finger tap on the button differently. However, from what I understand UIButton objects are only able to detect single finger touches touchDown, touchUpInside, etc. After doing some research, it looks like I’ll have to use the touchesBegan method and just check to see if both of the fingers are within myButton frame. Is there any easier way to do this? Thanks!

Answer 1

Yes it is! By using UITapGestureRecognizer you can do something like this

- (void)viewDidLoad {   
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap:)]
    tap.numberOfTapsRequired = 2;
    [myButton addGestureRecognizer:tap];
    [tap release];
}
- (void)tap:(UITapGestureRecognizer *)gesture {
    NSLog(@"Tap!");
}