如何在 swift 中为 xib 使用自定义委托？

Question

我想使用 inputAccessoryView 在键盘上方添加自定义数字按钮。我已经添加了视图。我已将 class CustomKeyboard 分配给 xib 文件。在 CustomKeyboard class 文件中，我已经连接了按钮的 IBAction。我的 ViewController textField1 和 textFiled2 中有两个 textFields，并且我已将 inputAccessoryView 与 textField1 相关联。当我点击 textField1 时，我的自定义按钮会显示在键盘上方。我的目标是当我点击我的自定义按钮时，它应该在 textFild2 中输入值。但我真的不知道我将如何实现这一目标。任何人有一些想法请帮助我。

import Foundation
import UIKit
class CustomKeyboard:UIView {
    @IBAction func rowButtonAction(_ sender: UIButton) {
        print(sender.currentTitle)
    }
    
}

import UIKit
class ViewController: UIViewController {
    @IBOutlet weak var textField1: UITextField!
    @IBOutlet weak var textField2: UITextField!
    override func viewDidLoad() {
        super.viewDidLoad()
        let view = UINib(nibName: "CustomKeyboard", bundle: nil).instantiate(withOwner: nil, options: nil)[0] as! UIView
        textField1.inputAccessoryView = view//customView
        textField1.autocorrectionType = .no
        textField2.autocorrectionType = .no
    }
}

Answer 1

您可以使用委托或闭包从 CustomKeyboard 获取回调到 ViewController。下面的示例使用委托方法，当用户点击视图时将调用函数 rowTapped。

import Foundation
import UIKit

protocol CustomKeyBoardProtocol:AnyObject{
        fun rowTapped(title:String)
}
class CustomKeyboard:UIView {

weak var delegate:CustomKeyBoardProtocol?
    @IBAction func rowButtonAction(_ sender: UIButton) {
        print(sender.currentTitle)
        delegate.rowTapped(title: sender.currentTitle)
    }

}

import UIKit
class ViewController: UIViewController,  CustomKeyBoardProtocol{
    @IBOutlet weak var textField1: UITextField!
    @IBOutlet weak var textField2: UITextField!
    override func viewDidLoad() {
        super.viewDidLoad()
        let customView = UINib(nibName: "CustomKeyboard", bundle: nil).instantiate(withOwner: nil, options: nil)[0] as! CustomKeyboard
        customView.delegate = self// he
        textField1.inputAccessoryView = customView//customView
        textField1.autocorrectionType = .no
        textField2.autocorrectionType = .no
    }


    func rowTapped(title:String){//it will be called on tap
    }
}

如何在 swift 中为 xib 使用自定义委托？

How to use custom delegate for xib in swift?

xcode

xib

ios

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custom-keyboard