How to have information that a touch event has happened and what kind of touch event and not handle it?

Question

i want to create an NSNotification for all the the touch events happening with there specific recognise types and not handling them just observing them, any ideas?

score 0 · Answer 1 · answered May 03 '13 at 08:36

0

Take a look to the UIGestureRecognizerDelegate reference, it could work for you: http://developer.apple.com/library/ios/#documentation/uikit/reference/UIGestureRecognizerDelegate_Protocol/Reference/Reference.html

answered May 03 '13 at 08:36

Héctor Dario Arroyo Gómez

92
4

score 0 · Answer 2 · answered May 03 '13 at 08:43

0

Yes, UIGestureRecognizerDelegate will work for you. You can selectively enable touch events through the mrthod.

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
    return (touch.view != self.itemWhichDoNotRequireTouch);
}

answered May 03 '13 at 08:43

Xcoder

1,762
13
17

sir, touch.view is a readonly property also my question was not to interfere in responder chain of UIGestureRecogniser i don't want view not to handle a gesture but only that whenever there is a gesture i get a notification that a certain gesture event has happened. – Abhinav Singh May 03 '13 at 09:05

score 0 · Answer 3 · answered May 03 '13 at 09:24

The iOS 6 Cookbook has an example of subclassing the UIWindow, and sending the events to a singleton UIView that's sat above the UIWindow. Works really well.

https://github.com/erica/iOS-6-Cookbook/tree/master/C01%20Gestures/13%20-%20TOUCHkit

Edit: this is also observational, it does not interrupt the responder chain.

How to have information that a touch event has happened and what kind of touch event and not handle it?

3 Answers3