ios 按钮点击和长按手势
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Button tap and long press gesture
提问by Alvin Wan
I'm having a little trouble with the gestures.
我的手势有点问题。
I'm trying to use both tap and long press on the same button, so I've used
我试图在同一个按钮上同时使用点击和长按，所以我使用了
@IBAction func xxx (sender: UITapGestureRecognizer)
and
和
@IBAction func xxx (sender: UILongPressGestureRecognizer)
but my button seems to react to both functions when I tap. What might be wrong?
但是当我点击时，我的按钮似乎对这两个功能都有反应。可能有什么问题？
func long(longpress: UIGestureRecognizer){
if(longpress.state == UIGestureRecognizerState.Ended){
homeScoreBool = !homeScoreBool
}else if(longpress.state == UIGestureRecognizerState.Began){
print("began")
}
}
回答by Rashwan L
Hard to say what′s not working with your code, with the only two rows that you have provided, but I would recommend you to do it in this way instead:
很难说什么对您的代码不起作用，您只提供了两行，但我建议您改用这种方式：
Create an outlet to your button instead
改为为您的按钮创建一个出口
@IBOutlet weak var myBtn: UIButton!
And in your viewDidLoad()add the gestures to the buttons
并在您viewDidLoad()的按钮上添加手势
let tapGesture = UITapGestureRecognizer(target: self, action: "normalTap")
let longGesture = UILongPressGestureRecognizer(target: self, action: "longTap:")
tapGesture.numberOfTapsRequired = 1
myBtn.addGestureRecognizer(tapGesture)
myBtn.addGestureRecognizer(longGesture)
And then create the actions to handle the taps
然后创建操作来处理水龙头
func normalTap(){
print("Normal tap")
}
func longTap(sender : UIGestureRecognizer){
print("Long tap")
if sender.state == .Ended {
print("UIGestureRecognizerStateEnded")
//Do Whatever You want on End of Gesture
}
else if sender.state == .Began {
print("UIGestureRecognizerStateBegan.")
//Do Whatever You want on Began of Gesture
}
}
Swift 3.0 version:
斯威夫特 3.0 版本：
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(ViewController.normalTap))
let longGesture = UILongPressGestureRecognizer(target: self, action: Selector(("longTap:")))
tapGesture.numberOfTapsRequired = 1
myBtn.addGestureRecognizer(tapGesture)
myBtn.addGestureRecognizer(longGesture)
func normalTap(){
print("Normal tap")
}
func longTap(sender : UIGestureRecognizer){
print("Long tap")
if sender.state == .ended {
print("UIGestureRecognizerStateEnded")
//Do Whatever You want on End of Gesture
}
else if sender.state == .began {
print("UIGestureRecognizerStateBegan.")
//Do Whatever You want on Began of Gesture
}
}
Updated syntax for Swift 5.x:
Swift 5.x 的更新语法：
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(normalTap))
button.addGestureRecognizer(tapGesture)
let longGesture = UILongPressGestureRecognizer(target: self, action: #selector(longTap))
button.addGestureRecognizer(longGesture)
@objc func normalTap(_ sender: UIGestureRecognizer){
print("Normal tap")
}
@objc func longTap(_ sender: UIGestureRecognizer){
print("Long tap")
if sender.state == .ended {
print("UIGestureRecognizerStateEnded")
//Do Whatever You want on End of Gesture
}
else if sender.state == .began {
print("UIGestureRecognizerStateBegan.")
//Do Whatever You want on Began of Gesture
}
}
