ios 控制器中的 UIView 触摸事件
声明:本页面是StackOverFlow热门问题的中英对照翻译,遵循CC BY-SA 4.0协议,如果您需要使用它,必须同样遵循CC BY-SA许可,注明原文地址和作者信息,同时你必须将它归于原作者(不是我):StackOverFlow
原文地址: http://stackoverflow.com/questions/30505165/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
UIView touch event in controller
提问by dhaval shah
How can I add UIView touchbegin action or touchend action programmatically as Xcode is not providing from Main.storyboard?
由于 Xcode 未从 Main.storyboard 提供,如何以编程方式添加 UIView touchbegin 动作或 touchend 动作?
回答by Miknash
You will have to add it through code. Try this:
您必须通过代码添加它。尝试这个:
// 1.create UIView programmetically
var myView = UIView(frame: CGRectMake(100, 100, 100, 100))
// 2.add myView to UIView hierarchy
self.view.addSubview(myView)
// 3. add action to myView
let gesture = UITapGestureRecognizer(target: self, action: "someAction:")
// or for swift 2 +
let gestureSwift2AndHigher = UITapGestureRecognizer(target: self, action: #selector (self.someAction (_:)))
self.myView.addGestureRecognizer(gesture)
func someAction(sender:UITapGestureRecognizer){
// do other task
}
// or for Swift 3
func someAction(_ sender:UITapGestureRecognizer){
// do other task
}
// or for Swift 4
@objc func someAction(_ sender:UITapGestureRecognizer){
// do other task
}
// update for Swift UI
Text("Tap me!")
.tapAction {
print("Tapped!")
}
回答by ventuz
Swift 4 / 5:
斯威夫特 4 / 5:
let gesture = UITapGestureRecognizer(target: self, action: #selector(self.checkAction))
self.myView.addGestureRecognizer(gesture)
@objc func checkAction(sender : UITapGestureRecognizer) {
// Do what you want
}
Swift 3:
斯威夫特 3:
let gesture = UITapGestureRecognizer(target: self, action: #selector(self.checkAction(sender:)))
self.myView.addGestureRecognizer(gesture)
func checkAction(sender : UITapGestureRecognizer) {
// Do what you want
}
回答by stevo.mit
Updating @Crashalot's answer for Swift 3.x:
更新 @Crashalot 对 Swift 3.x 的回答:
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
if let touch = touches.first {
let currentPoint = touch.location(in: self)
// do something with your currentPoint
}
}
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
if let touch = touches.first {
let currentPoint = touch.location(in: self)
// do something with your currentPoint
}
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
if let touch = touches.first {
let currentPoint = touch.location(in: self)
// do something with your currentPoint
}
}
回答by Crashalot
Updating @Chackle's answer for Swift 2.x:
更新@Chackle 对 Swift 2.x 的回答:
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
if let touch = touches.first {
let currentPoint = touch.locationInView(self)
// do something with your currentPoint
}
}
override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {
if let touch = touches.first {
let currentPoint = touch.locationInView(self)
// do something with your currentPoint
}
}
override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
if let touch = touches.first {
let currentPoint = touch.locationInView(self)
// do something with your currentPoint
}
}
回答by Chackle
Put this in your UIView
subclass (it's easiest if you make a sublcass for this functionality).
把它放在你的UIView
子类中(如果你为这个功能创建一个子类是最简单的)。
class YourView: UIView {
//Define your initialisers here
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
if let touch = touches.first as? UITouch {
let currentPoint = touch.locationInView(self)
// do something with your currentPoint
}
}
override func touchesMoved(touches: Set<NSObject>, withEvent event: UIEvent) {
if let touch = touches.first as? UITouch {
let currentPoint = touch.locationInView(self)
// do something with your currentPoint
}
}
override func touchesEnded(touches: Set<NSObject>, withEvent event: UIEvent) {
if let touch = touches.first as? UITouch {
let currentPoint = touch.locationInView(self)
// do something with your currentPoint
}
}
}
回答by DevB2F
For swift 4
快速 4
@IBOutlet weak var someView: UIView!
let gesture = UITapGestureRecognizer(target: self, action: #selector (self.someAction (_:)))
self.someView.addGestureRecognizer(gesture)
@objc func someAction(_ sender:UITapGestureRecognizer){
print("view was clicked")
}
回答by Hi?n ??
Swift 4.2:
斯威夫特 4.2:
@IBOutlet weak var viewLabel1: UIView!
@IBOutlet weak var viewLabel2: UIView!
override func viewDidLoad() {
super.viewDidLoad()
let myView = UITapGestureRecognizer(target: self, action: #selector(someAction(_:)))
self.viewLabel1.addGestureRecognizer(myView)
}
@objc func someAction(_ sender:UITapGestureRecognizer){
viewLabel2.isHidden = true
}
回答by iAleksandr
Create outlets from views that were created in StoryBoard.
从在 StoryBoard 中创建的视图创建插座。
@IBOutlet weak var redView: UIView!
@IBOutlet weak var orangeView: UIView!
@IBOutlet weak var greenView: UIView!
Override the touchesBegan method. There are 2 options, everyone can determine which one is better for him.
覆盖 touchesBegan 方法。有2个选择,每个人都可以决定哪个更适合他。
Detect touch in special view.
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { if let touch = touches.first { if touch.view == self.redView { tapOnredViewTapped() } else if touch.view == self.orangeView { orangeViewTapped() } else if touch.view == self.greenView { greenViewTapped() } else { return } } }
Detect touch point on special view.
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { if let touch = touches.first { let location = touch.location(in: view) if redView.frame.contains(location) { redViewTapped() } else if orangeView.frame.contains(location) { orangeViewTapped() } else if greenView.frame.contains(location) { greenViewTapped() } } }
在特殊视图中检测触摸。
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { if let touch = touches.first { if touch.view == self.redView { tapOnredViewTapped() } else if touch.view == self.orangeView { orangeViewTapped() } else if touch.view == self.greenView { greenViewTapped() } else { return } } }
在特殊视图上检测触点。
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { if let touch = touches.first { let location = touch.location(in: view) if redView.frame.contains(location) { redViewTapped() } else if orangeView.frame.contains(location) { orangeViewTapped() } else if greenView.frame.contains(location) { greenViewTapped() } } }
Lastly, you need to declare the functions that will be called, depending on which view the user clicked.
最后,您需要声明将被调用的函数,具体取决于用户单击的视图。
func redViewTapped() {
print("redViewTapped")
}
func orangeViewTapped() {
print("orangeViewTapped")
}
func greenViewTapped() {
print("greenViewTapped")
}
回答by Rasoul Miri
you can used this way: create extension
你可以这样使用:创建扩展
extension UIView {
func addTapGesture(action : @escaping ()->Void ){
let tap = MyTapGestureRecognizer(target: self , action: #selector(self.handleTap(_:)))
tap.action = action
tap.numberOfTapsRequired = 1
self.addGestureRecognizer(tap)
self.isUserInteractionEnabled = true
}
@objc func handleTap(_ sender: MyTapGestureRecognizer) {
sender.action!()
}
}
class MyTapGestureRecognizer: UITapGestureRecognizer {
var action : (()->Void)? = nil
}
and use this way:
并使用这种方式:
@IBOutlet weak var testView: UIView!
testView.addTapGesture{
// ...
}
回答by Jacob Ahlberg
Updating @stevo.mit's answer for Swift 4.x:
更新 @stevo.mit 对 Swift 4.x 的回答:
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
if let touch = touches.first {
let currentPoint = touch.location(in: self.view)
// do something with your currentPoint
}
}
override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
if let touch = touches.first {
let currentPoint = touch.location(in: self.view)
// do something with your currentPoint
}
}
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
if let touch = touches.first {
let currentPoint = touch.location(in: self.view)
// do something with your currentPoint
}
}