CODEWITHSUNDEEP
objective-ciosuiviewuigesturerecognizeruitapgesturerecognizer
Luke
Luke

Reputation: 9700

Stop a UIGestureRecognizer from operating on UIButtons inside a UIView

I've attached a UITapGestureRecognizer to a UIView in my application. If the user double-taps it, the buttons inside that view get randomly re-arranged. Working fine, lovely.

However, the user can also trigger this by double-tapping one of the buttons themselves, or even by tapping two buttons on different parts of the screen.

Is there a sensible / easy way to have this double-tap only work if the two taps are within x number of pixels, and on the view itself, not any elements within it such as these UIButtons?

Upvotes: 2

Views: 648

Answers (2)

GeneralMike
GeneralMike

Reputation: 3001

I think the usual way to do this is with shouldReceiveTouch. Check out this question for a lengthy discussion and all the details.

Upvotes: 1

rdelmar
rdelmar

Reputation: 104082

One way to do this would be to attach a single tap gesture recognizer to the buttons -- this will preempt the button's normal touch events, so you would have to put the button's action method in the gesture recognizer's action method. Then, you would add a dependency to the double tapper to have it only fire if the single tapper fails:

[self.doubleTapper requireGestureRecognizerToFail:self.tapper];

Upvotes: 0

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