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我有一個UIPanGestureRecognizer安裝程序,裏面有幾個函數。我希望能夠在一個按鈕中引用這些功能。引用另一個func中的func(swift)
的UIPanGestureRecognizer
@IBAction func panCard(_ sender: UIPanGestureRecognizer) {
let card = sender.view!
let point = sender.translation(in: view)
card.center = CGPoint(x: view.center.x + point.x, y: view.center.y + point.y)
func swipeLeft() {
//move off to the left
UIView.animate(withDuration: 0.3, animations: {
card.center = CGPoint(x: card.center.x - 200, y: card.center.y + 75)
card.alpha = 0
})
}
func swipeRight() {
//move off to the right
UIView.animate(withDuration: 0.3, animations: {
card.center = CGPoint(x: card.center.x + 200, y: card.center.y + 75)
card.alpha = 0
})
}
if sender.state == UIGestureRecognizerState.ended {
if card.center.x < 75 {
swipeLeft()
return
} else if card.center.x > (view.frame.width - 75) {
swipeRight()
return
}
resetCard()
}
}
和按鈕
@IBAction func LikeButton(_ sender: UIButton) {
}
如何可以引用的功能swipeLeft和swipeRight按鈕裏面?
好的謝謝。我已經將它們移出了範圍,並且讓card = sender.view!但後來得到錯誤的使用未解決的標識符'發件人'就讓那個。 –
給函數添加一個參數: 'func swipeRight(view:NSView)',傳入'sender'作爲參數,並使用'view'而不是'card'。 – Oskar
但如果使用NSView,我會'使用未聲明的類型NSView'。我真的很新,所以覺得有點混亂! –