ios - without - Cómo llamar gestos toque en UIView programáticamente en rápido

uiviewcontroller swift

Question

Tengo una UIView y le agregué un gesto de toque:

let tap = UITapGestureRecognizer(target: self, action: Selector("handleTap:"))
tap.delegate = self
myView.addGesture(tap)

Estoy tratando de llamarlo mediante programación en el archivo de prueba.

sendActionForEvent

Estoy usando esta función, pero no funciona:

myView.sendActionForEvent(UIEvents.touchUpDown)

Muestra el selector no reconocido enviado a la instancia.

¿Como puedó resolver esté problema?

Answer 1

Aquí está la forma más simple de agregar gestos en la vista en Swift 5

MFMailComposeViewControllerDelegate
@IBAction func btnMailAction(_ sender: Any)
{
let strEmail = SAFESTRING(str: (self.dictEventDetails?.value(forKeyPath: "Email.value_text.email") as! String))
if !MFMailComposeViewController.canSendMail()
{
AppDelegate.sharedInstance().showAlertAction(strTitle: "OK", strMessage: "Mail services are not available") { (success) in
}
return
}
let composeVC = MFMailComposeViewController()
composeVC.mailComposeDelegate = self
composeVC.setToRecipients([strEmail])
composeVC.setSubject("")
composeVC.setMessageBody("", isHTML: false)
self.present(composeVC, animated: true, completion: nil)
}
func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?)
{
controller.dismiss(animated: true, completion: nil)
}

Answer 2

Así es como funciona en Swift 3:

@IBOutlet var myView: UIView!
override func viewDidLoad() {
super.viewDidLoad()
let tap = UITapGestureRecognizer(target: self, action:#selector(handleTap))
myView.addGestureRecognizer(tap)
}
func handleTap() {
print("tapped")
}

Answer 3

Debe inicializar UITapGestureRecognizer con un objetivo y una acción, de esta manera:

UITapGestureRecognizer *gesRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTap:)]; // Declare the Gesture.
gesRecognizer.delegate = self;
[yourView addGestureRecognizer:gesRecognizer]; // Add Gesture to your view.
// Declare the Gesture Recognizer handler method.
- (void)handleTap:(UITapGestureRecognizer *)gestureRecognizer{
NSLog(@"Tapped");
}

Luego, debe implementar el controlador, que se llamará cada vez que ocurra un evento de tap:

import UIKit
class ViewController: UIViewController {
@IBOutlet weak var myView: UIView!
override func viewDidLoad() {
super.viewDidLoad()
// Add tap gesture recognizer to view
let tapGesture = UITapGestureRecognizer(target: self, action: Selector("handleTap:"))
myView.addGestureRecognizer(tapGesture)
}
// this method is called when a tap is recognized
func handleTap(sender: UITapGestureRecognizer) {
print("tap")
}
}

Answer 4

En lugar de invocar UITapGestureRecognizer de myView, puede llamar directamente a la función handleTap ,

Answer 5

Implementando gesto de toque

let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: "touchHappen")
view.userInteractionEnabled = true
view.addGestureRecognizer(tap)

Llama a esta función cuando se reconoce el toque.

func touchHappen() {
//Causes the view (or one of its embedded text fields) to resign the first responder status.
self.view.endEditing(true)
}

Actualización para Swift 3

let tap = UITapGestureRecognizer(target: self, action: #selector(self.touchHappen(_:)))
view.addGestureRecognizer(tap)
view.userInteractionEnabled = true
func touchHappen(_ sender: UITapGestureRecognizer) {
print("Hello Museer")
}

Answer 6

Para Swift 4 :

let tap = UITapGestureRecognizer(target: self, action: #selector(self.handleTap(_:)))
view.addGestureRecognizer(tap)
view.isUserInteractionEnabled = true
self.view.addSubview(view)
// function which is triggered when handleTap is called
@objc func handleTap(_ sender: UITapGestureRecognizer) {
print("Hello World")
}

En Swift 4, debe indicar explícitamente que la función activada se puede llamar desde Objective-C, por lo que también debe agregar @objc a su función handleTap.

Vea la respuesta de @Ali Beadle aquí: Swift 4 agregar gesto: anular vs @objc

Answer 7

Para cualquiera que esté buscando la solución Swift 3

let tap = UITapGestureRecognizer(target: self, action: #selector(self.handleTap(_:)))
view.addGestureRecognizer(tap)
view.isUserInteractionEnabled = true
self.view.addSubview(view)
// function which is triggered when handleTap is called
func handleTap(_ sender: UITapGestureRecognizer) {
print("Hello World")
}

Answer 8

Pruebe el siguiente código rápido (probado en Xcode 6.3.1):

 import UIKit
class KEUITapGesture150427 : UIViewController {
var _myTap: UITapGestureRecognizer?
var _myView: UIView?
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = UIColor.whiteColor();
_myTap = UITapGestureRecognizer(target: self
, action: Selector("_myHandleTap:"))
_myTap!.numberOfTapsRequired = 1
_myView = UIView(frame: CGRectMake(100, 200, 100, 100))
_myView!.backgroundColor=UIColor.blueColor()
_myView!.layer.cornerRadius = 20
_myView!.layer.borderWidth = 1
_myView!.addGestureRecognizer(_myTap!)
view.addSubview(_myView!)
}
func _myHandleTap(sender: UITapGestureRecognizer) {
if sender.state == .Ended {
println("_myHandleTap(sender.state == .Ended)")
sender.view!.backgroundColor
= UIColor(red: CGFloat(drand48()), green: CGFloat(drand48()), blue: CGFloat(drand48()), alpha: 1.0);
}
}
}

Tenga en cuenta que su objetivo podría ser cualquier subclase de UIResponder, consulte (probado en Xcode 6.3.1):

 import UIKit
class MyTapTarget : UIResponder {
func _myHandleTap2(sender: UITapGestureRecognizer) {
if sender.state == .Ended {
println("_myHandleTap2(sender.state == .Ended)")
sender.view!.backgroundColor
= UIColor(red: CGFloat(drand48()), green: CGFloat(drand48()), blue: CGFloat(drand48()), alpha: 1.0);
}
}
}
class KEUITapGesture150427b : UIViewController {
var _myTap: UITapGestureRecognizer?
var _myView: UIView?
var _myTapTarget: MyTapTarget?
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = UIColor.whiteColor();
_myTapTarget = MyTapTarget()
_myTap = UITapGestureRecognizer(target: _myTapTarget!
, action: Selector("_myHandleTap2:"))
_myTap!.numberOfTapsRequired = 1
_myView = UIView(frame: CGRectMake(100, 200, 100, 100))
_myView!.backgroundColor=UIColor.blueColor()
_myView!.layer.cornerRadius = 20
_myView!.layer.borderWidth = 1
_myView!.addGestureRecognizer(_myTap!)
view.addSubview(_myView!)
}
}

Answer 9

Quería especificar dos puntos que me seguían causando problemas.

• Estaba creando el Gesture Recognizer en init y lo almacenaba en una propiedad let. Aparentemente, agregar este gesto de reconocimiento a la vista no funciona. Puede ser objeto propio pasado al reconocedor de gestos durante init, no está configurado correctamente.
• El reconocedor de gestos no debe agregarse a las vistas con cero cuadros. Creo todas mis vistas con fotograma cero y luego las cambio de tamaño usando la distribución automática. Los reconocedores de gestos deben agregarse DESPUÉS de que las vistas hayan sido redimensionadas por el motor de reproducción automática. Así que agrego el reconocedor de gestos en viewDidAppear y funcionan.

Answer 10

Si desea que el código del Objetivo C se dé a continuación,

let tap = UITapGestureRecognizer(target: self, action: "handleTap:")
tap.delegate = self
myView.addGestureRecognizer(tap)

o desea que el código rápido se da a continuación,

func handleTap(sender: UITapGestureRecognizer) {
// handling code
}

Answer 11

Solo una nota: no olvide habilitar la interacción en la vista:

let tap = UITapGestureRecognizer(target: self, action: #selector(handleTap))
view.addGestureRecognizer(tap)
// view.userInteractionEnabled = true
self.view.addSubview(view)

Answer 12

Swift 4

let tap = UITapGestureRecognizer(target: self, action: #selector(self.touchTapped(_:)))
self.view.addGestureRecognizer(tap)
@objc func touchTapped(_ sender: UITapGestureRecognizer) {
}

Answer 13

Trabajé en Xcode 6.4 en Swift. Vea abajo.

var view1: UIView!
func assignTapToView1() {
let tap = UITapGestureRecognizer(target: self, action: Selector("handleTap"))
// tap.delegate = self
view1.addGestureRecognizer(tap)
self.view .addSubview(view1)
...
}
func handleTap() {
print("tap working")
view1.removeFromSuperview()
// view1.alpha = 0.1
}

Answer 14

Trabajé en Xcode 7.3.1 en Swift 2.2. Vea abajo.

func addTapGesture() {
let tap = UITapGestureRecognizer(target: self, action: #selector(MyViewController.handleTap))
tap.numberOfTapsRequired = 1
self.myView.addGestureRecognizer(tap)
}
func handleTap() {
// Your code here...
}

Answer 15

prueba la siguiente extensión

 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
}

y luego úsalo:

submitBtn.addTapGesture {
//your code
}

incluso puedes usarlo para celular

cell.addTapGesture {
//your code
}

Answer 16

xCode 9.3, Swift 4.0

class BaseVC: UIViewController, UIGestureRecognizerDelegate {
@IBOutlet weak var iView: UIView!
override func viewDidLoad() {
super.viewDidLoad()
let clickUITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(self.onSelect(_:)))
clickUITapGestureRecognizer.delegate = self
iView?.addGestureRecognizer(tap)
}
func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldReceive touch: UITouch) -> Bool {
return true
}
@IBAction func onSelect(_ sender: Any) {
}
}

Answer 17

UITapGestureRecognizer inicializar UITapGestureRecognizer con un objetivo y una acción, de esta manera:

let tap = UITapGestureRecognizer(target: self, action: #selector(self.handleTap(_:)))
myView.addGestureRecognizer(tap)

Luego, debe implementar el controlador, que se llamará cada vez que ocurra un evento de tap:

@objc func handleTap(_ sender: UITapGestureRecognizer? = nil) {
// handling code
}

Entonces, llamar a su controlador de eventos de reconocimiento de gestos táctiles es tan fácil como llamar a un método:

handleTap()

Answer 18

PASO 1

@IBOutlet var viewTap: UIView!

PASO 2

var tapGesture = UITapGestureRecognizer()

PASO 3

override func viewDidLoad() {
super.viewDidLoad()
// TAP Gesture
tapGesture = UITapGestureRecognizer(target: self, action: #selector(ViewController.myviewTapped(_:)))
tapGesture.numberOfTapsRequired = 1
tapGesture.numberOfTouchesRequired = 1
viewTap.addGestureRecognizer(tapGesture)
viewTap.isUserInteractionEnabled = true
}

PASO 4

func myviewTapped(_ sender: UITapGestureRecognizer) {
if self.viewTap.backgroundColor == UIColor.yellow {
self.viewTap.backgroundColor = UIColor.green
}else{
self.viewTap.backgroundColor = UIColor.yellow
}
}

SALIDA

Answer 19

Respuesta completa para Swift 4

Paso 1: crea una salida para la vista

@IBOutlet weak var rightViewOutlet: UIView!

Paso 2: define un gesto de toque

var tapGesture = UITapGestureRecognizer()

Paso 3: crear la función ObjC (llamada cuando se toca la vista)

@objc func rightViewTapped(_ recognizer: UIGestureRecognizer) {
print("Right button is tapped")
}

Paso 4: agregue lo siguiente dentro de viewDidLoad ()

let rightTap = UITapGestureRecognizer(target: self, action: #selector(ViewController.rightViewTapped(_:)))
rightViewOutlet.addGestureRecognizer(rightTap)

Answer 20

Swift 4

Primero, cree un objeto de UITapGestureRecognizer

var tapGesture = UITapGestureRecognizer()

El segundo paso es inicializar UITapGestureReconizer. Habilite la interacción del usuario y luego agréguela.

override func viewDidLoad() {
super.viewDidLoad()
tapGesture = UITapGestureRecognizer(target: self, action: #selector(YourViewController.myviewTapped(_:)))
infosView.isUserInteractionEnabled = true
infosView.addGestureRecognizer(tapGesture)
view.addSubview(infosView)
}

Tercero, crea un método

@objc func myviewTapped(_ recognizer: UIGestureRecognizer) {
print("button is tapped")
}

Answer 21

Swift 5.1 Ejemplo para tres vistas

Paso: 1 -> Agregar vista del guión gráfico y agregar vista de salida Controlador UIView

@IBOutlet var firstView: UIView!
@IBOutlet var secondView: UIView!
@IBOutlet var thirdView: UIView!

Paso: 2 -> Agregar etiqueta de vista de StoryBoard

Paso: 3 -> Agregar gesto

override func viewDidLoad() {
super.viewDidLoad()
firstView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(self.tap(_:))))
firstView.isUserInteractionEnabled = true
secondView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(self.tap(_:))))
secondView.isUserInteractionEnabled = true
thirdView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(self.tap(_:))))
thirdView.isUserInteractionEnabled = true
}

Paso: 4 -> seleccionar vista

@objc func tap(_ gestureRecognizer: UITapGestureRecognizer) {
let tag = gestureRecognizer.view?.tag
switch tag! {
case 1 :
print("select first view")
case 2 :
print("select second view")
case 3 :
print("select third view")
default:
print("default")
}
}

Answer 22

Vista interior

import UIKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
addGestures()
}
// MARK: Add Gestures to target view
func addGestures()
{
// 1. Single Tap or Touch
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.tapGetstureDetected))
tapGesture.numberOfTapsRequired = 1
view.addGestureRecognizer(tapGesture)
//2. Double Tap
let doubleTapGesture = UITapGestureRecognizer(target: self, action: #selector(self.doubleTapGestureDetected))
doubleTapGesture.numberOfTapsRequired = 2
view.addGestureRecognizer(doubleTapGesture)
//3. Swipe
let swipeGesture = UISwipeGestureRecognizer(target: self, action: #selector(self.swipeGetstureDetected))
view.addGestureRecognizer(swipeGesture)
//4. Pinch
let pinchGesture = UIPinchGestureRecognizer(target: self, action: #selector(self.pinchGetstureDetected))
view.addGestureRecognizer(pinchGesture)
//5. Long Press
let longPressGesture = UILongPressGestureRecognizer(target: self, action: #selector(self.longPressGetstureDetected))
view.addGestureRecognizer(longPressGesture)
//6. Pan
let panGesture = UILongPressGestureRecognizer(target: self, action: #selector(self.panGestureDetected))
view.addGestureRecognizer(panGesture)
}
// MARK: Handle Gesture detection
@objc func swipeGetstureDetected() {
print("Swipe Gesture detected!!")
}
@objc func tapGetstureDetected() {
print("Touch/Tap Gesture detected!!")
}
@objc func pinchGetstureDetected() {
print("Pinch Gesture detected!!")
}
@objc func longPressGetstureDetected() {
print("Long Press Gesture detected!!")
}
@objc func doubleTapGestureDetected() {
print("Double Tap Gesture detected!!")
}
@objc func panGestureDetected()
{
print("Pan Gesture detected!!")
}
//MARK: Shake Gesture
override func becomeFirstResponder() -> Bool {
return true
}
override func motionEnded(_ motion: UIEvent.EventSubtype, with event: UIEvent?){
if motion == .motionShake
{
print("Shake Gesture Detected")
}
}
}

let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(imageTapped(tapGestureRecognizer:)))
self.imgMainAdView.isUserInteractionEnabled = true
self.imgMainAdView.addGestureRecognizer(tapGestureRecognizer)

Propósito de la llamada

//MARK: - Image Tap Method -
@objc func imageTapped(tapGestureRecognizer: UITapGestureRecognizer)
{
print("Tapped")
if let url = URL(string: self.strMAinAdvLink)
{
UIApplication.shared.open(url, options: [:])
}
}

Propósito del correo

@IBAction func btnCall1Action(_ sender: Any)
{
let text = self.strPhoneNumber1!
let test = String(text.filter { !" -()".contains($0) })
UIApplication.shared.openURL(NSURL(string: "tel:///(test)")! as URL)
}

Answer 23

 let tap = UITapGestureRecognizer(target: self, action: Selector("handleFrontTap:"))
frontView.addGestureRecognizer(tap)
// Make sure this is not private
func handleFrontTap(gestureRecognizer: UITapGestureRecognizer) {
print("tap working")
}