Question

如何从UIView NOT UIViewController

内部正确准备segue

我的UIViewController有一个容器视图，在容器视图里面有一个按钮。

class myInnerView: UIView {
    ...
    func myButton(gesture: UIGestureRecognizer){
        //calling a perform segue from another UIViewController does not recognize the SegueID
        //ViewController().self.showProfile(self.id) -- DOES NOT WORK
    }
}

class ViewController: UIViewController {
    ...
    func showProfile(id: String){
        ...
        self.performSegueWithIdentifier("toViewProfile", sender: self)
    }
}

Answer 1

您的视图不应处理按钮。这应该由控制器处理。（这就是它被称为“控制器”的原因，而UIView被称为“视图”）。

MVC as described by Apple

Answer 2

如果按钮是视图控制器视图的子视图，您应该能够将IBAction onTouchUpInside从按钮拖动到视图控制器。然后，您可以从该方法启动segue。

Answer 3

其中一个解决方案是将UITapGestureRecognizer添加到您的按钮，但是从UIViewController内部添加：

class ViewController: UIViewController {

    var myInnerView = myInnerView()

    override func viewDidLoad() {
        let tap = UITapGestureRecognizer(target: self, action: #selector(ViewController.handleTapGesture))
        self.myInnerView.myButton.addGestureRecognizer(tap)
    }

    @objc func handleTapGesture(){
        performSegue(withIdentifier: "toViewProfile", sender: nil)
    }
}

class myInnerView: UIView {
    // make outlet of your button so you can add the tapGestureRecognizer from your ViewController and thats all
    @IBOutlet public weak var myButton: UIButton!
}

Answer 4

您需要点按手势才能浏览视图

let customView = myInnerView()
let gestureRec = UITapGestureRecognizer(target: self, action:  #selector (self.someAction (_:)))
myView.addGestureRecognizer(customView)


func someAction(_ sender:UITapGestureRecognizer){
    let controller = storyboard?.instantiateViewController(withIdentifier: "someViewController")
    self.present(controller!, animated: true, completion: nil)
    // swift 2
    // self.presentViewController(controller, animated: true, completion: nil)
}

如何从UIView内部执行segue

4 个答案: