Why do I get touchesCanceled all the time?

Question

SergioDCQ OP

Created Aug ’21

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Just curious why I get touchesCanceled even after I process:

@objc func tappedView(_ sender:UITapGestureRecognizer)

It's requiring a lot of extra coding to determine a real cancel vs I just got a tap.

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Answer 1

Claude31 OP

Aug ’21

Could you show more code: how you create the tapGesture, how you detect cancel. Why don't you connect directly the tapGesture to an IBAction from IB ? Is it called from SwiftUI code ?

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Answer 2

Claude31 OP

Aug ’21

It is surprising to have Cancel for a TapGesture. Doc shows that for such discrete gesture, there is not such a state (just failed, but that may come from a cancel):

https://developer.apple.com/documentation/uikit/touches_presses_and_gestures/implementing_a_custom_gesture_recognizer/about_the_gesture_recognizer_state_machine

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