如何识别所有 4 个方向的滑动
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【中文标题】如何识别所有 4 个方向的滑动【英文标题】：How to recognize swipe in all 4 directions 【发布时间】：2014-08-04 14:11:45 【问题描述】：我需要使用滑动来识别滑动手势向下然后向右。但是在swift UISwipeGestureRecognizer 有预先确定的正确方向..我不知道如何使它用于其他方向..
【问题讨论】：
【参考方案1】：import UIKit
class ViewController: UIViewController
override func viewDidLoad()
super.viewDidLoad()
let leftside = UISwipeGestureRecognizer(target: self, action: #selector(swiped))
leftside.direction = .left
view.addGestureRecognizer(leftside)
let rightside = UISwipeGestureRecognizer(target: self, action: #selector(swiped))
rightside.direction = .right
view.addGestureRecognizer(rightside)
let upside = UISwipeGestureRecognizer(target: self, action: #selector(swiped))
upside.direction = .up
view.addGestureRecognizer(upside)
let downside = UISwipeGestureRecognizer(target: self, action: #selector(swiped))
downside.direction = .down
view.addGestureRecognizer(downside)
// Do any additional setup after loading the view, typically from a nib.
@objc func swiped(gesture: UIGestureRecognizer)
if let swipeGesture = gesture as? UISwipeGestureRecognizer
switch swipeGesture.direction
case UISwipeGestureRecognizer.Direction.left:
view.backgroundColor = UIColor.red
case UISwipeGestureRecognizer.Direction.right:
view.backgroundColor = UIColor.yellow
case UISwipeGestureRecognizer.Direction.up:
view.backgroundColor = UIColor.green
case UISwipeGestureRecognizer.Direction.down:
view.backgroundColor = UIColor.blue
default:
"ERROR"
【讨论】：
代码在附有解释时会更有帮助。 Stack Overflow 是关于学习的，而不是提供 sn-ps 来盲目复制和粘贴。请edit您的问题并解释它如何回答所提出的具体问题。见How to Answer。【参考方案2】：编辑：“swift5.3”
首先创建一个baseViewController并添加viewDidLoad这个代码：
class BaseViewController: UIViewController
override func viewDidLoad()
super.viewDidLoad()
let swipeRight = UISwipeGestureRecognizer(target: self, action: #selector(swiped))
swipeRight.direction = .right
self.view.addGestureRecognizer(swipeRight)
let swipeLeft = UISwipeGestureRecognizer(target: self, action: #selector(swiped))
swipeLeft.direction = .left
self.view.addGestureRecognizer(swipeLeft)
// Example Tabbar 5 pages
@objc func swiped(_ gesture: UISwipeGestureRecognizer)
if gesture.direction == .left
if (self.tabBarController?.selectedIndex)! < 5
self.tabBarController?.selectedIndex += 1
else if gesture.direction == .right
if (self.tabBarController?.selectedIndex)! > 0
self.tabBarController?.selectedIndex -= 1
并使用这个baseController 类：
class YourViewController: BaseViewController
// its done. Swipe successful
//Now you can use all the Controller you have created without writing any code.
【讨论】：
【参考方案3】：来自故事板：
-
在您的视图中添加四个滑动手势识别器。
从属性检查器设置每个目标方向。你可以
选择右、左、上或下
一一选择滑动手势识别器，控制+拖动到你的视图控制器。插入名称（让我们说 leftGesture、rightGesture、upGesture 和
downGesture），将连接更改为：操作并键入：
UISwipeGestureRecognizer
从您的 viewController：
@IBAction func rightGesture(sender: UISwipeGestureRecognizer)
print("Right")
@IBAction func leftGesture(sender: UISwipeGestureRecognizer)
print("Left")
@IBAction func upGesture(sender: UISwipeGestureRecognizer)
print("Up")
@IBAction func downGesture(sender: UISwipeGestureRecognizer)
print("Down")
【讨论】：
通过这个答案，您不需要编写大量代码，但您可以使用情节提要以及情节提要和代码之间的连接。如果开发人员更喜欢以这种方式工作，这个答案可能会更容易，但如果开发人员更喜欢在编码方面工作，那么第一个答案肯定是最好的。 我使用了 4 个滑动手势而不是一个，并且很多工作量都在故事板中而不是编码中。【参考方案4】：每个方向都需要一个UISwipeGestureRecognizer。这有点奇怪，因为UISwipeGestureRecognizer.direction 属性是一个选项样式的位掩码，但每个识别器只能处理一个方向。如果需要，您可以将它们全部发送到同一个处理程序，并在那里进行分类，或者将它们发送到不同的处理程序。这是一个实现：
override func viewDidLoad()
super.viewDidLoad()
let swipeRight = UISwipeGestureRecognizer(target: self, action: #selector(respondToSwipeGesture))
swipeRight.direction = .right
self.view.addGestureRecognizer(swipeRight)
let swipeDown = UISwipeGestureRecognizer(target: self, action: #selector(respondToSwipeGesture))
swipeDown.direction = .down
self.view.addGestureRecognizer(swipeDown)
@objc func respondToSwipeGesture(gesture: UIGestureRecognizer)
if let swipeGesture = gesture as? UISwipeGestureRecognizer
switch swipeGesture.direction
case .right:
print("Swiped right")
case .down:
print("Swiped down")
case .left:
print("Swiped left")
case .up:
print("Swiped up")
default:
break
斯威夫特 3：
override func viewDidLoad()
super.viewDidLoad()
let swipeRight = UISwipeGestureRecognizer(target: self, action: #selector(self.respondToSwipeGesture))
swipeRight.direction = UISwipeGestureRecognizerDirection.right
self.view.addGestureRecognizer(swipeRight)
let swipeDown = UISwipeGestureRecognizer(target: self, action: #selector(self.respondToSwipeGesture))
swipeDown.direction = UISwipeGestureRecognizerDirection.down
self.view.addGestureRecognizer(swipeDown)
func respondToSwipeGesture(gesture: UIGestureRecognizer)
if let swipeGesture = gesture as? UISwipeGestureRecognizer
switch swipeGesture.direction
case UISwipeGestureRecognizerDirection.right:
print("Swiped right")
case UISwipeGestureRecognizerDirection.down:
print("Swiped down")
case UISwipeGestureRecognizerDirection.left:
print("Swiped left")
case UISwipeGestureRecognizerDirection.up:
print("Swiped up")
default:
break
【讨论】：
“每个识别器只能处理一个方向” - 这不是真的。见***.com/questions/16184539/… "每个识别器只能处理一个方向" - 具体来说，在 Swift 中为 true，在 Objective-C 中为 false。 您不必在.Down 等前面添加UISwipeGestureRecognizerDirection。如果足够，只需使用swipeDown.direction = .Down。只是一个提示 =)
我们可以将相同的gestureRecogniser对象添加到多个视图吗？我尝试过但没有成功。
如果你在 swift 中执行@Sergey Skoblikovs 的方法（通过执行swipe.direction = [.Right,.Down,.Up,.Left]），识别器甚至不会被调用，也许这是 swift 的一个问题，但目前不起作用.【参考方案5】：
滑动手势到你想要的视图，或者基于@Alexandre Cassagne的Swift 5和XCode 11中的viewcontroller整个视图
override func viewDidLoad()
super.viewDidLoad()
addSwipe()
func addSwipe()
let directions: [UISwipeGestureRecognizer.Direction] = [.right, .left, .up, .down]
for direction in directions
let gesture = UISwipeGestureRecognizer(target: self, action: #selector(handleSwipe))
gesture.direction = direction
self.myView.addGestureRecognizer(gesture)// self.view
@objc func handleSwipe(sender: UISwipeGestureRecognizer)
let direction = sender.direction
switch direction
case .right:
print("Gesture direction: Right")
case .left:
print("Gesture direction: Left")
case .up:
print("Gesture direction: Up")
case .down:
print("Gesture direction: Down")
default:
print("Unrecognized Gesture Direction")
【讨论】：
【参考方案6】：在 Swift 5 中，
let swipeGesture = UISwipeGestureRecognizer(target: self, action: #selector(handleSwipe))
swipeGesture.direction = [.left, .right, .up, .down]
view.addGestureRecognizer(swipeGesture)
【讨论】：
【参考方案7】：挖了一会之后：
为所有 4 个方向添加滑动的最短方法是：
override func viewDidLoad()
super.viewDidLoad()
for direction in [UISwipeGestureRecognizer.Direction.down, .up, .left, .right]
let swipeGest = UISwipeGestureRecognizer(target: self, action: #selector(swipeAction(_:)))
swipeGest.direction = direction
self.view.addGestureRecognizer(swipeGest)
@objc func swipeAction(_ gesture: UISwipeGestureRecognizer)
switch gesture.direction
case UISwipeGestureRecognizer.Direction.right:
print("Swiped right")
case UISwipeGestureRecognizer.Direction.down:
print("Swiped down")
case UISwipeGestureRecognizer.Direction.left:
print("Swiped left")
case UISwipeGestureRecognizer.Direction.up:
print("Swiped up")
default: break
【讨论】：
【参考方案8】：Swift 5 已更新
//Add in ViewDidLoad
let gesture = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.handleSwipe))
gesture.direction = .right
self.view.addGestureRecognizer(gesture)
//Add New Method
@objc func handleSwipe(sender: UISwipeGestureRecognizer)
print("swipe direction is",sender.direction)
【讨论】：
如何回答 OP 的问题？问题是要找到一种优雅的方式来向滑动手势识别器添加多个方向。【参考方案9】：滑动手势在 Swift 5 中
override func viewDidLoad()
super.viewDidLoad()
let swipeLeft = UISwipeGestureRecognizer(target: self, action: #selector(handleGesture))
swipeLeft.direction = .left
self.view!.addGestureRecognizer(swipeLeft)
let swipeRight = UISwipeGestureRecognizer(target: self, action: #selector(handleGesture))
swipeRight.direction = .right
self.view!.addGestureRecognizer(swipeRight)
let swipeUp = UISwipeGestureRecognizer(target: self, action: #selector(handleGesture))
swipeUp.direction = .up
self.view!.addGestureRecognizer(swipeUp)
let swipeDown = UISwipeGestureRecognizer(target: self, action: #selector(handleGesture))
swipeDown.direction = .down
self.view!.addGestureRecognizer(swipeDown)
@objc func handleGesture(gesture: UISwipeGestureRecognizer) -> Void
if gesture.direction == UISwipeGestureRecognizer.Direction.right
print("Swipe Right")
else if gesture.direction == UISwipeGestureRecognizer.Direction.left
print("Swipe Left")
else if gesture.direction == UISwipeGestureRecognizer.Direction.up
print("Swipe Up")
else if gesture.direction == UISwipeGestureRecognizer.Direction.down
print("Swipe Down")
【讨论】：
【参考方案10】：在 Swift 4.2 和 Xcode 9.4.1 中
将动画委托CAAnimationDelegate添加到您的类
//Swipe gesture for left and right
let swipeFromRight = UISwipeGestureRecognizer(target: self, action: #selector(didSwipeLeft))
swipeFromRight.direction = UISwipeGestureRecognizerDirection.left
menuTransparentView.addGestureRecognizer(swipeFromRight)
let swipeFromLeft = UISwipeGestureRecognizer(target: self, action: #selector(didSwipeRight))
swipeFromLeft.direction = UISwipeGestureRecognizerDirection.right
menuTransparentView.addGestureRecognizer(swipeFromLeft)
//Swipe gesture selector function
@objc func didSwipeLeft(gesture: UIGestureRecognizer)
//We can add some animation also
DispatchQueue.main.async(execute:
let animation = CATransition()
animation.type = kCATransitionReveal
animation.subtype = kCATransitionFromRight
animation.duration = 0.5
animation.delegate = self
animation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
//Add this animation to your view
self.transparentView.layer.add(animation, forKey: nil)
self.transparentView.removeFromSuperview()//Remove or hide your view if requirement.
)
//Swipe gesture selector function
@objc func didSwipeRight(gesture: UIGestureRecognizer)
// Add animation here
DispatchQueue.main.async(execute:
let animation = CATransition()
animation.type = kCATransitionReveal
animation.subtype = kCATransitionFromLeft
animation.duration = 0.5
animation.delegate = self
animation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
//Add this animation to your view
self.transparentView.layer.add(animation, forKey: nil)
self.transparentView.removeFromSuperview()//Remove or hide yourview if requirement.
)
如果您想从视图中删除手势，请使用此代码
self.transparentView.removeGestureRecognizer(gesture)
例如：
func willMoveFromView(view: UIView)
if view.gestureRecognizers != nil
for gesture in view.gestureRecognizers!
//view.removeGestureRecognizer(gesture)//This will remove all gestures including tap etc...
if let recognizer = gesture as? UISwipeGestureRecognizer
//view.removeGestureRecognizer(recognizer)//This will remove all swipe gestures
if recognizer.direction == .left //Especially for left swipe
view.removeGestureRecognizer(recognizer)
像这样调用这个函数
//Remove swipe gesture
self.willMoveFromView(view: self.transparentView)
这样你可以写下剩余的方向，请注意是否有从下到上滚动视图，反之亦然
如果您有滚动视图，您将获得 conflict 从上到下并查看相反的手势。
【讨论】：
【参考方案11】：就这样：(Swift 4.2.1)
UISwipeGestureRecognizer.Direction.init(
rawValue: UISwipeGestureRecognizer.Direction.left.rawValue |
UISwipeGestureRecognizer.Direction.right.rawValue |
UISwipeGestureRecognizer.Direction.up.rawValue |
UISwipeGestureRecognizer.Direction.down.rawValue
)
【讨论】：
在您的代码中添加一些描述，这样会更好。【参考方案12】：简单。只需按照下面的代码即可享受。
//SwipeGestureMethodUsing
func SwipeGestureMethodUsing ()
//AddSwipeGesture
[UISwipeGestureRecognizerDirection.right,
UISwipeGestureRecognizerDirection.left,
UISwipeGestureRecognizerDirection.up,
UISwipeGestureRecognizerDirection.down].forEach( direction in
let swipe = UISwipeGestureRecognizer(target: self, action: #selector(self.respondToSwipeGesture))
swipe.direction = direction
window?.addGestureRecognizer(swipe)
)
//respondToSwipeGesture
func respondToSwipeGesture(gesture: UIGestureRecognizer)
if let swipeGesture = gesture as? UISwipeGestureRecognizer
switch swipeGesture.direction
case UISwipeGestureRecognizerDirection.right:
print("Swiped right")
case UISwipeGestureRecognizerDirection.down:
print("Swiped down")
case UISwipeGestureRecognizerDirection.left:
print("Swiped left")
case UISwipeGestureRecognizerDirection.up:
print("Swiped up")
default:
break
【讨论】：
【参考方案13】：这可以通过简单地声明一个函数来处理你所有的滑动 UISwipeGestureRecognizer 方向来完成。这是我的代码：
let swipeGestureRight = UISwipeGestureRecognizer(target: self, action:#selector(ViewController.respondToSwipeGesture(_:)) )
swipeGestureRight.direction = UISwipeGestureRecognizerDirection.right
self.view .addGestureRecognizer(swipeGestureRight)
let swipeGestureLeft = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGesture(_:)))
swipeGestureLeft.direction = UISwipeGestureRecognizerDirection.left
self.view.addGestureRecognizer(swipeGestureLeft)
let swipeGestureUp = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGesture(_:)))
swipeGestureUp.direction = UISwipeGestureRecognizerDirection.up
self.view.addGestureRecognizer(swipeGestureUp)
let swipeGestureDown = UISwipeGestureRecognizer(target: self, action: #selector(ViewController.respondToSwipeGesture(_:)))
swipeGestureDown.direction = UISwipeGestureRecognizerDirection.down
self.view.addGestureRecognizer(swipeGestureDown)
这是处理滑动方向功能的函数：
func respondToSwipeGesture(_ sender: UIGestureRecognizer)
if let swipeGesture = sender as? UISwipeGestureRecognizer
switch swipeGesture.direction
case UISwipeGestureRecognizerDirection.right:
print("right swipe")
case UISwipeGestureRecognizerDirection.left:
print("leftSwipe")
case UISwipeGestureRecognizerDirection.up:
print("upSwipe")
case UISwipeGestureRecognizerDirection.down:
print("downSwipe")
default:
break
【讨论】：
【参考方案14】：Nate 的回答只是一个更酷的 swift 语法：
[UISwipeGestureRecognizerDirection.right,
UISwipeGestureRecognizerDirection.left,
UISwipeGestureRecognizerDirection.up,
UISwipeGestureRecognizerDirection.down].forEach( direction in
let swipe = UISwipeGestureRecognizer(target: self, action: #selector(self.respondToSwipeGesture))
swipe.direction = direction
self.view.addGestureRecognizer(swipe)
)
【讨论】：
【参考方案15】：Apple Swift 3.1 版 - Xcode 8.3 版 (8E162)
来自Alexandre Cassagne's approach的便捷方式
let directions: [UISwipeGestureRecognizerDirection] = [.up, .down, .right, .left]
for direction in directions
let gesture = UISwipeGestureRecognizer(target: self, action: #selector(YourClassName.handleSwipe(gesture:)))
gesture.direction = direction
self.view?.addGestureRecognizer(gesture)
func handleSwipe(gesture: UISwipeGestureRecognizer)
print(gesture.direction)
switch gesture.direction
case UISwipeGestureRecognizerDirection.down:
print("down swipe")
case UISwipeGestureRecognizerDirection.up:
print("up swipe")
case UISwipeGestureRecognizerDirection.left:
print("left swipe")
case UISwipeGestureRecognizerDirection.right:
print("right swipe")
default:
print("other swipe")
【讨论】：
使用此特定版本，您需要在终端中运行defaults write com.apple.dt.xcode IDEPlaygroundDisableSimulatorAlternateFramebuffer -bool YES 以修复某些硬件上的错误。它应该在新版本的 Xcode 中修复【参考方案16】：
UISwipeGestureRecognizer 有一个 direction 属性，其定义如下：
var direction: UISwipeGestureRecognizerDirection
此手势识别器允许的滑动方向。
Swift 3.0.1（及以下）的问题在于，即使UISwipeGestureRecognizerDirection 符合OptionSet，以下 sn-p 将编译但不会产生任何积极的预期结果：
// This compiles but does not work
let gesture = UISwipeGestureRecognizer(target: self, action: #selector(gestureHandler))
gesture.direction = [.right, .left, .up, .down]
self.addGestureRecognizer(gesture)
作为一种解决方法，您必须为每个所需的 direction 创建一个 UISwipeGestureRecognizer。
以下 Playground 代码展示了如何使用 Array 的 map 方法为同一个 UIView 和同一个 selector 实现多个 UISwipeGestureRecognizer：
import UIKit
import PlaygroundSupport
class SwipeableView: UIView
convenience init()
self.init(frame: CGRect(x: 100, y: 100, width: 100, height: 100))
backgroundColor = .red
[UISwipeGestureRecognizerDirection.right, .left, .up, .down].map(
let gesture = UISwipeGestureRecognizer(target: self, action: #selector(gestureHandler))
gesture.direction = $0
self.addGestureRecognizer(gesture)
)
func gestureHandler(sender: UISwipeGestureRecognizer)
switch sender.direction
case [.left]: frame.origin.x -= 10
case [.right]: frame.origin.x += 10
case [.up]: frame.origin.y -= 10
case [.down]: frame.origin.y += 10
default: break
class ViewController: UIViewController
override func viewDidLoad()
super.viewDidLoad()
view.backgroundColor = .white
view.addSubview(SwipeableView())
let controller = ViewController()
PlaygroundPage.current.liveView = controller
【讨论】：
xcode 8.3 中仍然存在同样的问题 - 已编译但无法正常工作 - 我只为左右这回UISwipeGestureRecognizerDirection(rawValue: 15)【参考方案17】：
看起来情况最近发生了变化。在 XCode 7.2 中，以下方法有效：
override func viewDidLoad()
super.viewDidLoad()
let swipeGesture = UISwipeGestureRecognizer(target: self, action: "handleSwipe:")
swipeGesture.direction = [.Down, .Up]
self.view.addGestureRecognizer(swipeGesture)
func handleSwipe(sender: UISwipeGestureRecognizer)
print(sender.direction)
在 ios 8.4 和 9.2 的模拟器以及 9.2 的实际设备上测试。
或者，使用 mlcollard 的便捷扩展 here：
let swipeGesture = UISwipeGestureRecognizer()
print("Gesture recognized !")
swipeGesture.direction = [.Down, .Up]
self.view.addGestureRecognizer(swipeGesture)
【讨论】：
可能调用了选择器，但是发送方的方向不正确。换句话说，如果您不需要知道滑动的方向但不需要知道滑动的方向，这种方法很好。 不再有效。在 Swift 3 中，上下文必须提供给第一个值：[UISwipeGestureRecognizerDirection.right, .left, .up, .down]【参考方案18】：
我只是想贡献这个，最后看起来更优雅：
func addSwipe()
let directions: [UISwipeGestureRecognizerDirection] = [.Right, .Left, .Up, .Down]
for direction in directions
let gesture = UISwipeGestureRecognizer(target: self, action: Selector("handleSwipe:"))
gesture.direction = direction
self.addGestureRecognizer(gesture)
func handleSwipe(sender: UISwipeGestureRecognizer)
print(sender.direction)
【讨论】：
self.addGestureRecognizer(gesture) 对我造成了错误。修复它的是self.view.addGestureRecognizer(gesture);。
@ahitt6345 我在UIView 子类中使用我的代码，但如果你在UIViewController 中，那你是绝对正确的！
干净，对我来说最好的答案。以上是关于如何识别所有 4 个方向的滑动的主要内容，如果未能解决你的问题，请参考以下文章