我有一个UIView并且我添加了点击手势
let tap = UITapGestureRecognizer(target: self, action: Selector("handleTap:"))
tap.delegate = self
myView.addGesture(tap)
我试图在testfile中以编程方式调用它。
sendActionForEvent
我正在使用这个函数,但它不起作用:
myView.sendActionForEvent(UIEvents.touchUpDown)
它显示未识别的选择器发送到实例。
我该如何解决这个问题呢?
你需要用目标和动作初始化UITapGestureRecognizer,如下所示:
let tap = UITapGestureRecognizer(target: self, action: "handleTap:")
tap.delegate = self
myView.addGestureRecognizer(tap)
然后,你应该实现处理程序,它将在每次tap事件发生时被调用:
func handleTap(sender: UITapGestureRecognizer) {
// handling code
}
你需要用目标和动作初始化UITapGestureRecognizer,如下所示:
let tap = UITapGestureRecognizer(target: self, action: "handleTap:")
tap.delegate = self
myView.addGestureRecognizer(tap)
然后,你应该实现处理程序,它将在每次tap事件发生时被调用:
func handleTap(sender: UITapGestureRecognizer) {
// handling code
}
内部ViewDidLoad
let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(imageTapped(tapGestureRecognizer:)))
self.imgMainAdView.isUserInteractionEnabled = true
self.imgMainAdView.addGestureRecognizer(tapGestureRecognizer)
//MARK: - Image Tap Method -
@objc func imageTapped(tapGestureRecognizer: UITapGestureRecognizer)
{
print("Tapped")
if let url = URL(string: self.strMAinAdvLink)
{
UIApplication.shared.open(url, options: [:])
}
}
打电话的目的
@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)
}
邮件的目的
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)
}
Swift 4的完整答案
步骤1:为视图创建一个出口
@IBOutlet weak var rightViewOutlet: UIView!
步骤2:定义一个点击手势
var tapGesture = UITapGestureRecognizer()
步骤3:创建ObjC函数(当视图被点击时调用)
@objc func rightViewTapped(_ recognizer: UIGestureRecognizer) {
print("Right button is tapped")
}
步骤4:在viewDidLoad()中添加以下内容
let rightTap = UITapGestureRecognizer(target: self, action: #selector(ViewController.rightViewTapped(_:)))
rightViewOutlet.addGestureRecognizer(rightTap)
Swift 5.1三视图示例
步骤:1 ->添加storyboard视图和outlet viewController UIView
@IBOutlet var firstView: UIView!
@IBOutlet var secondView: UIView!
@IBOutlet var thirdView: UIView!
步骤:2 ->添加storyBoard视图标签
步骤:3 ->添加手势
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
}
步骤:4 -> select view
@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")
}
}