Necesito usar deslizar para reconocer el gesto de deslizar hacia abajo y luego a la derecha. Pero en UISwipeGestureRecognizer rápido tiene la dirección correcta predeterminada ... Y no sé cómo hacer que esto use otras direcciones ...
Necesito usar deslizar para reconocer el gesto de deslizar hacia abajo y luego a la derecha. Pero en UISwipeGestureRecognizer rápido tiene la dirección correcta predeterminada ... Y no sé cómo hacer que esto use otras direcciones ...
Respuestas:
Necesitas tener uno UISwipeGestureRecognizer
para cada dirección. Es un poco extraño porque la UISwipeGestureRecognizer.direction
propiedad es una máscara de bits de estilo de opciones, pero cada reconocedor solo puede manejar una dirección. Puede enviarlos todos al mismo controlador si lo desea, y ordenarlos por ahí, o enviarlos a diferentes controladores. Aquí hay una implementación:
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
}
}
}
Swift 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
}
}
}
UISwipeGestureRecognizerDirection
delante de .Down
ect. Solo uso swipeDown.direction = .Down
si es suficiente. Solo un consejo =)
swipe.direction = [.Right,.Down,.Up,.Left]
), ni siquiera se llamará al reconocedor, tal vez este es un problema con swift, pero a partir de ahora no funciona.
Simplemente tenía ganas de contribuir con esto, al final se ve más elegante:
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)
}
self.addGestureRecognizer(gesture)
me causó un error Lo que solucionó fue self.view.addGestureRecognizer(gesture);
.
UIView
subclase, ¡pero tienes toda la razón si estás en una UIViewController
!
Desde el guión gráfico:
Desde su 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")
}
Parece que las cosas han cambiado últimamente. En XCode 7.2 funciona el siguiente enfoque:
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)
}
Probado en Simulator en iOS 8.4 y 9.2 y en dispositivo real en 9.2.
O, usando la práctica extensión de mlcollard aquí :
let swipeGesture = UISwipeGestureRecognizer() {
print("Gesture recognized !")
}
swipeGesture.direction = [.Down, .Up]
self.view.addGestureRecognizer(swipeGesture)
[UISwipeGestureRecognizerDirection.right, .left, .up, .down]
El camino práctico desde el enfoque de Alexandre Cassagne
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")
}
}
defaults write com.apple.dt.xcode IDEPlaygroundDisableSimulatorAlternateFramebuffer -bool YES
en la Terminal para corregir un error en algún hardware. Debería arreglarse en una nueva versión de Xcode
En Swift 4.2 y Xcode 9.4.1
Agregue Delegado de animación, CAAnimationDelegate a su clase
//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.
})
}
Si desea eliminar el gesto de la vista, use este código
self.transparentView.removeGestureRecognizer(gesture)
Ex:
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)
}
}
}
}
}
Llama a esta función como
//Remove swipe gesture
self.willMoveFromView(view: self.transparentView)
De esta manera, puede escribir las instrucciones restantes y tenga cuidado si tiene vista de desplazamiento o no de abajo hacia arriba y viceversa
Si tiene una vista de desplazamiento, obtendrá conflictos de arriba a abajo y verá gestos versa.
UISwipeGestureRecognizer
tiene una direction
propiedad que tiene la siguiente definición:
var direction: UISwipeGestureRecognizerDirection
La dirección permitida del deslizamiento para este reconocedor de gestos.
El problema con Swift 3.0.1 (y a continuación) es que, incluso si se UISwipeGestureRecognizerDirection
ajusta a OptionSet
, el siguiente fragmento se compilará pero no producirá ningún resultado positivo esperado:
// This compiles but does not work
let gesture = UISwipeGestureRecognizer(target: self, action: #selector(gestureHandler))
gesture.direction = [.right, .left, .up, .down]
self.addGestureRecognizer(gesture)
Como solución alternativa, deberá crear un UISwipeGestureRecognizer
para cada deseado direction
.
El siguiente código de Playground muestra cómo implementar varios UISwipeGestureRecognizer
para lo mismo UIView
y lo mismo selector
usando el map
método de Array :
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
UISwipeGestureRecognizerDirection(rawValue: 15)
Deslice el gesto hacia la vista que desea, o vea la vista completa del controlador en Swift 5 y XCode 11 basado en @Alexandre Cassagne
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")
}
}
Deslizar gesto en Swift 5
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")
}
}
Primero cree un baseViewController
y agregue viewDidLoad
este código "swift4":
class BaseViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
let swipeRight = UISwipeGestureRecognizer(target: self, action: #selector(swiped))
swipeRight.direction = UISwipeGestureRecognizerDirection.right
self.view.addGestureRecognizer(swipeRight)
let swipeLeft = UISwipeGestureRecognizer(target: self, action: #selector(swiped))
swipeLeft.direction = UISwipeGestureRecognizerDirection.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
}
}
}
}
Y usa esta baseController
clase:
class YourViewController: BaseViewController {
// its done. Swipe successful
//Now you can use all the Controller you have created without writing any code.
}
En Swift 5,
let swipeGesture = UISwipeGestureRecognizer(target: self, action: #selector(handleSwipe))
swipeGesture.direction = [.left, .right, .up, .down]
view.addGestureRecognizer(swipeGesture)
Solo una sintaxis rápida más fresca para la respuesta de Nate:
[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)
})
Fácil. Simplemente siga el código a continuación y disfrute.
//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
}
}
}
Para Swift 5 se actualiza
//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)
}
Después de excavar por un tiempo:
La forma más corta de agregar deslizamientos para las 4 direcciones es:
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
}
Se puede hacer simplemente declarando una función que se encargará de todas las direcciones de deslizamiento UISwipeGestureRecognizer. Aquí está mi código:
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)
Aquí está la función que administrará la funcionalidad de dirección de desplazamiento:
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
}
}
}
Solo así: ( Swift 4.2.1 )
UISwipeGestureRecognizer.Direction.init(
rawValue: UISwipeGestureRecognizer.Direction.left.rawValue |
UISwipeGestureRecognizer.Direction.right.rawValue |
UISwipeGestureRecognizer.Direction.up.rawValue |
UISwipeGestureRecognizer.Direction.down.rawValue
)