Set exclusive touch on multiple UIViews of the same class

Question

I am creating a random number of custom UIViews of the same class, and I'm adding them in the UIViewController's view. I'm assigning them a UITapGestureRecognizer, but I can't seem to make the exclusive touch work:

for (int i = 0; i <= n; i++) {
   ICCatalogProductView *catalogProductView;
   catalogProductView = [[ICCatalogProductView alloc] init];
   [self.view addSubview:catalogProductView]
   UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(testTouch)];
   [catalogProductView addGestureRecognizer:tapGesture];
   [catalogProductView setExclusiveTouch:YES];
}

If i tap the UIViews simultanously, the method is called twice (not the behaviour I want). Is there any elegant method of solving this, or any method at all?

check this :-http://stackoverflow.com/questions/11919624/ios-setting-exclusive-touch-to-all-buttons-in-a-view — Nitin Gohel, Jul 25 '13 at 11:51
I want only one touch to be possible, the same behaviour you would have when there are 2 UIButtons with .exclusiveTouch = YES — Durican Radu, Jul 25 '13 at 11:51

score 1 · Answer 1 · answered Jul 25 '13 at 11:53

From the Apple Documentation:

exclusiveTouch only prevents touches in other views during the time in which there's an active touch in the exclusive touch view. That is, if you put a finger down in an exclusive touch view touches won't start in other views until you lift the first finger. It does not prevent touches from starting in other views if there are currently no touches in the exclusiveTouch view.

To truly make this view the only thing on screen that can receive touches you'd need to either add another view over top of everything else to catch the rest of the touches, or subclass a view somewhere in your hierarchy (or your UIWindow itself) and override hitTest:withEvent: to always return your text view when it's visible, or to return nil for touches not in your text view.

means its only set exclusive in your one view, not if you are touching something outside your view.

Both UIViews that I'm touching have exclusiveTouch set YES, yet simultaneous touching is possible. — Durican Radu, Jul 25 '13 at 11:55
Basically, touching any view other than ActivityView make the activityView Disappear, you'd need to handle it using the activity View. God forbid, but probably you'd have to create a two separate views. It has something to do with first responder suppose. — Naveed Abbas, Nov 04 '17 at 12:25

Set exclusive touch on multiple UIViews of the same class

1 Answers1