我目前有一个子视图,它创建并添加到ViewDidLoad()中的UIView中.我正在尝试使用UIGestureRecognizers来检测点击并取消隐藏特定按钮.我目前的代码：
override func viewDidLoad() {
super.viewDidLoad()
architectView = CustomClass(frame: self.view.bounds)
self.view.addSubview(architectView)
let gestureRecognizer = UITapGestureRecognizer(target: self,action: "handleTap:")
gestureRecognizer.delegate = self
architectView.addGestureRecognizer(gestureRecognizer)
}
func handleTap(gestureRecognizer: UIGestureRecognizer) {
let alert = UIAlertController(title: "Alert",message: "Message",preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "Click",style: UIAlertActionStyle.Default,handler: nil))
self.presentViewController(alert,animated: true,completion: nil)
}
handleTap()函数是一个简单的测试,用于查看是否正在识别抽头.按下时,此代码不会触发UIAlert？我错过了什么？
解决方法
我在这里测试了你的代码,它确实有效.但是,我认为您可能缺少将UIGestureRecognizerDelegate协议添加到View Controller.见下文：
class ViewController: UIViewController,UIGestureRecognizerDelegate {
var architectView = UIView()
override func viewDidLoad() {
super.viewDidLoad()
architectView = UIView(frame: self.view.bounds)
self.view.addSubview(architectView)
let gestureRecognizer = UITapGestureRecognizer(target: self,action: "handleTap:")
gestureRecognizer.delegate = self
architectView.addGestureRecognizer(gestureRecognizer)
}
func handleTap(gestureRecognizer: UIGestureRecognizer) {
let alert = UIAlertController(title: "Alert",preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "Click",handler: nil))
self.presentViewController(alert,completion: nil)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
