iphone - iPad application strange behavior -

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i working on simple video player base application in have 8 buttons, on click of buttons video plays , when video playing complete button image changed. if user close video button image not change.

this small app working perfect me , when send client behave strange, buttons works , of them can't.

how resolve it!

i had same issue ipad. buttons worked fine on simulator, on ipad worked randomly.
figured out gesture recognizer precise on touchupinside event. if tap , move finger millimeter touch event being canceled, thinks it's swipe.
solved little hack, removing addtarget:action:forcontrolevents: , writing own method gesturerecognizer.


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