Swift 3 - 无法执行功能

Question

以下是我的代码。我也发布了截图。

Button_CustomSegmentValueChanged是我自己制作的自定义分段控件。它是一个单独的按钮，工作正常，但我想从“SwipedRight”函数中运行“Button_CustomSegmentValueChanged”函数，但我无法传递正确的开关值以便这样做。需要帮助。

有人吗？

import UIKit 

class CredentialsViewController: UIViewController { 

    @IBOutlet weak var loginView: UIView! 
    @IBOutlet weak var signupView: UIView! 

    var currentSelectedView = 0 

    override func viewDidLoad() { 
     super.viewDidLoad() 

     let swipeR = UISwipeGestureRecognizer(target: self, action: #selector(CredentialsViewController.SwipedRight(swipe:))) 
     swipeR.direction = .right 
     view.addGestureRecognizer(swipeR) 

     let swipeL = UISwipeGestureRecognizer(target: self, action: #selector(CredentialsViewController.SwipedLeft(swipe:))) 
     swipeL.direction = .left 
     view.addGestureRecognizer(swipeL) 

     //Hide view 
     signupView.transform = CGAffineTransform(translationX: signupView.frame.size.width, y: 0) 
    } 

    @IBAction func Button_CustomSegmentValueChanged(_ sender: CustomSegmentedControl) { 

     switch sender.selectedSegmentIndex { 
     case 0: 
      LoadLoginView() 
      break 

     case 1: 
      LoadSignupView() 
      break 

     default: 
      break 
     } 

    } 

    func SwipedRight(swipe : UISwipeGestureRecognizer){ 
     if currentSelectedView == 1 { 
      Button_CustomSegmentValueChanged(0) 
      //LoadLoginView() 
     } 
    } 

    func SwipedLeft(swipe : UISwipeGestureRecognizer){ 
     if currentSelectedView == 0 { 
      //LoadSignupView() 
     } 

    } 

    func LoadLoginView(){ 

     UIView.animate(withDuration: 0.5, delay: 0, options: .curveEaseOut, animations: { 
      self.signupView.transform = CGAffineTransform(translationX : self.loginView.frame.size.width, y : 0) 
      self.loginView.transform = .identity 
      self.currentSelectedView = 0 
     }) 
    } 

    func LoadSignupView(){ 

     UIView.animate(withDuration: 0.5, delay: 0, options: .curveEaseOut, animations: { 
      self.signupView.transform = .identity 
      self.loginView.transform = CGAffineTransform(translationX: self.loginView.frame.size.width, y: 0) 
      self.currentSelectedView = 1 
     }) 
    } 


} 

Screenshot of my code and error

Answer 1

我会建议使用在CredentialSegmentedController的按钮阵列，以模仿变化分段

1. 的行为从您的自定义分段控制做一个出口

2. 然后使用该段控制修改代码像下面

   func SwipedRight(swipe : UISwipeGestureRecognizer) { 
   
         if currentSelectedView == 1 { 
           //Button_CustomSegmentValueChanged(0) 
           //LoadLoginView() 
           let btn = customSegmentOutlet.buttons[0] 
           customSegmentOutlet.buttonTapped(btn) 
         } 
       } 
   
       func SwipedLeft(swipe : UISwipeGestureRecognizer){ 
         if currentSelectedView == 0 { 
           //LoadSignupView() 
           let btn = customSegmentOutlet.buttons[1] 
           customSegmentOutlet.buttonTapped(btn) 
         } 
   
       } 
   

Answer 2

你传入Int虽然实际需要的类型是CustomSegmentedControl。要简单地解决这个问题，只需为CustomSegmentedControl创建IBOutlet，并将其作为参数传递给Button_CustomSegmentValueChanged方法。

func SwipedRight(swipe : UISwipeGestureRecognizer){ 
    if currentSelectedView == 1 { 
     customSegmentOutlet.selectedSegmentIndex = 0 
     Button_CustomSegmentValueChanged(customSegmentOutlet) 
     //LoadLoginView() 
    } 
} 

Answer 3

假设你CustomSegmentedControl是UISegmentedControl一个子类，调用此

func swipedRight(swipe : UISwipeGestureRecognizer){ 
    if currentSelectedView == 1 { 
     let seg = UISegmentedControl() 
    seg.selectedSegmentIndex = 0 
    Button_CustomSegmentValueChanged(seg) 
    } 
} 

如果CustomSegmentedControl不是UISegmentedControl子类时我已经修改的代码

@IBAction func button_CustomSegmentValueChanged(_ sender: UISegmentedControl?) { 
    // guard sender for nil before use 
} 

几行，那么改变它。