Swift 3 - 无法执行功能

Question

以下是我的代码。我还发布了截图。

Button_CustomSegmentValueChanged 是我制作的自定义分段控件。它是一个单独的按钮，工作正常，但我也想从 "SwipedRight" 函数内部使用运行 "Button_CustomSegmentValueChanged" 函数，但我无法传递正确的开关值来这样做。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

您传递的是 Int，但所需的实际类型是 CustomSegmentedControl。要简单地解决这个问题，只需为您的 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 2

我建议使用 CredentialSegmentedController 上的按钮数组来模仿更改段的行为

从您的自定义细分控件创建一个出口

然后使用下面的段控件修改您的代码

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 3

假设你的CustomSegmentedControl是UISegmentedControl的子类，我修改了几行代码

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

并且调用这个时

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

如果 CustomSegmentedControl 不是 UISegmentedControl 的子类，请更改它。

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