在不禁用子视图的情况下禁用 UITextField 的编辑 [重复]

Question

我有UITextField，我在它的左视图中放了一个UIButton。我想禁用UITextField 的编辑，而我的UIButton 响应点击操作。我尝试了textField.isUserInteractionEnabled 和textField.isEnabled，但他们都禁用了我的UIButton。有什么办法吗？我自定义的UITextField 类是这样的

import UIKit

@IBDesignable
class UITextFieldWithButton: UITextField, UITextFieldDelegate {


    private var happyButton: UIButton = UIButton(type: .system)

    @IBInspectable
    var buttonText: String {
        get {
            let string = happyButton.titleLabel!.text!
            let start = string.index(string.startIndex, offsetBy: 2)
            let end = string.endIndex
            return String(happyButton.titleLabel!.text![start..<end])
        }
        set {
            happyButton.setTitle("  " + newValue, for: .normal)
            happyButton.sizeToFit()
            self.leftView = happyButton
            self.leftViewMode = .always
        }
    }


    var isButtonEnable: Bool {
        get {
            return self.isButtonEnable
        }
        set {
            happyButton.isEnabled = newValue
        }
    }
    var buttonDelegate: UITextFieldWithButtonDelegate?

    required override init(frame: CGRect) {
        super.init(frame: frame)
        delegate = self
        happyButton.addTarget(self,action: #selector(pressButton(_:)), for: .touchUpInside)
        happyButton.titleLabel?.font = UIFont(name: (font?.fontName)!, size: (font?.pointSize)!)
    }

    required init(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)!
        delegate = self
        happyButton.addTarget(self,action: #selector(pressButton(_:)), for: .touchUpInside)
        happyButton.titleLabel?.font = UIFont(name: (font?.fontName)!, size: (font?.pointSize)!)
    }

    @objc private func pressButton(_ sender: UIButton){
        if let click = buttonDelegate {
            click.clickOnUITextFieldButton(self)
        }
    }

}

protocol UITextFieldWithButtonDelegate {
    func clickOnUITextFieldButton(_ sender: UITextFieldWithButton)
}

Answer 1

“我尝试了 textField.isUserInteractionEnabled 和 textField.isEnabled，但它们都禁用了我的 UIButton”：您的代码运行良好，您可能在 uitextfield 后面添加了按钮，尝试在视图层次结构中将其向前移动