我已经完成了单击识别器,但无法弄清楚如何将该单击识别器改为双击。我可以使用一些指导。
代码:
import Foundation
import UIKit
class MainBoardController: UIViewController{
let tap = UITapGestureRecognizer()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
var swipe: UISwipeGestureRecognizer = UISwipeGestureRecognizer(target: self, action: "GotoProfile")
swipe.direction = UISwipeGestureRecognizerDirection.Right
self.view.addGestureRecognizer(swipe)
tap.addTarget(self, action: "GotoCamera")
view.userInteractionEnabled = true
view.addGestureRecognizer(tap)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func GotoProfile(){
self.performSegueWithIdentifier("Profilesegue", sender: nil)
}
func GotoCamera(){
self.performSegueWithIdentifier("Camerasegue", sender: nil)
}
}
答案 0 :(得分:9)
尝试以下代码
import UIKit
class MainBoardController: UIViewController{
let tap = UITapGestureRecognizer()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
var swipe: UISwipeGestureRecognizer = UISwipeGestureRecognizer(target: self, action: "GotoProfile")
swipe.direction = UISwipeGestureRecognizerDirection.Right
self.view.addGestureRecognizer(swipe)
// DOUBLE TAP
tap.numberOfTapsRequired = 2
tap.addTarget(self, action: "GotoCamera")
view.userInteractionEnabled = true
view.addGestureRecognizer(tap)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func GotoProfile(){
self.performSegueWithIdentifier("Profilesegue", sender: nil)
}
func GotoCamera(){
self.performSegueWithIdentifier("Camerasegue", sender: nil)
}
}
答案 1 :(得分:9)
// Single Tap
let singleTap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(PostDetailViewController.handleSingleTap(sender:)))
singleTap.numberOfTapsRequired = 1
self.viewTop.addGestureRecognizer(singleTap)
// Double Tap
let doubleTap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(PostDetailViewController.handleDoubleTap))
doubleTap.numberOfTapsRequired = 2
self.viewTop.addGestureRecognizer(doubleTap)
singleTap.require(toFail: doubleTap)
singleTap.delaysTouchesBegan = true
doubleTap.delaysTouchesBegan = true
func handleSingleTap(sender: AnyObject?) {
print("Single Tap!")
}
func handleDoubleTap() {
print("Double Tap!")
}
魔术在三行以下
singleTap.require(toFail: doubleTap)
singleTap.delaysTouchesBegan = true
doubleTap.delaysTouchesBegan = true
答案 2 :(得分:5)
以下是单击和双击操作的示例代码。
请注意,单击操作有一个冒号(handleSingleTap:
),但双击动作没有(handleDoubleTap
)?这表明选择器采用了参数。因此,在下面的函数中,我们可以检查单击的发送者,如果您将tap功能分配给许多元素,这将是有用的。如果你有冒号,你必须在函数中有参数。
override func viewDidLoad() {
super.viewDidLoad()
// Single Tap
let singleTap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: "handleSingleTap:")
singleTap.numberOfTapsRequired = 1
self.view.addGestureRecognizer(singleTap)
// Double Tap
let doubleTap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: "handleDoubleTap")
doubleTap.numberOfTapsRequired = 2
self.view.addGestureRecognizer(doubleTap)
}
func handleSingleTap(sender: AnyObject?) {
print("Single Tap!")
}
func handleDoubleTap() {
print("Double Tap!")
}
注意:此示例将以双击方式运行单击操作。
答案 3 :(得分:5)
我用扩展名解决了这个问题:
override func viewDidLoad() {
super.viewDidLoad()
let tapGR = UITapGestureRecognizer(target: self, action: #selector(PostlistViewController.handleTap(_:)))
tapGR.delegate = self
tapGR.numberOfTapsRequired = 2
view.addGestureRecognizer(tapGR)
}
extension MainBoardController: UIGestureRecognizerDelegate {
func handleTap(_ gesture: UITapGestureRecognizer){
print("doubletapped")
}
}
答案 4 :(得分:0)
更多Swifty方式:
view?.tap(numberOfTapsRequired: 2, action: action)
关闭:
private lazy var action: Action = Action(action: {[weak self] _ in
print("Double click")
})
非常重要的是不要丢失对你的动作的引用(你可以像上面的例子一样把它作为字段)。
使用此UIView扩展名: https://gist.github.com/yoman07/7aae5abb957ff656b2f118ad1e6c2d36