点击文本字段右键时如何显示xib视图

Posted 2023-02-26

【中文标题】点击文本字段右键时如何显示xib视图

【英文标题】：how to show xib view when tap on textfield right button

【发布时间】：2019-12-31 11:19:26

【问题描述】：

我想在点击文本字段右键时显示​​一个弹出视图，我试过了 下面的代码，但点击文本字段右键时视图不显示。 ，我用“CustomeView”类名创建了xib视图，如下所示 ，尝试在警报视图中加载

  class ViewController: UIViewController, UITextFieldDelegate 

      let textFieldRightButton = UIButton(type: .infoLight)
    var textFieldOne:UITextField? = nil
    var alertview:UIView? = nil

    override func viewWillAppear(_ animated: Bool) 
        DispatchQueue.main.asyncAfter(deadline: .now() + 0.2, execute: 

            self.showAlertViewWithTextField(title: "Test", msg: "Test Custome View", okActionTitle: "continue", cancelActionTitle: "Cancel", success: 
                print("Continue")
            ) 
                print("Cancel")
            

        )
    

    func showAlertViewWithTextField(title: String, msg: String, okActionTitle:String, cancelActionTitle:String, success: (() -> Void)? , cancel: (() -> Void)?)
    
        let alert = UIAlertController(title: title, message: msg, preferredStyle: UIAlertController.Style.alert)
        alertview = alert.view

        textFieldRightButton.tintColor = UIColor.red

        alert.addTextField
            
                (textField) in
                textField.placeholder = "Enter text."
                textField.delegate = self
                textField.rightViewMode = .always
                textField.rightView = self.textFieldRightButton

        

        textFieldOne = alert.textFields?.first

         textFieldRightButton.addTarget(self, action: #selector(showPopupMsg), for: .touchUpInside)

        let successAction: UIAlertAction = UIAlertAction(title: okActionTitle, style: .destructive)
        
            action -> Void in
            success?()
        
        let cancelAction: UIAlertAction = UIAlertAction(title: cancelActionTitle, style: .cancel)
        
            action -> Void in
            cancel?()
        

        alert.addAction(successAction)
        alert.addAction(cancelAction)
        UIApplication.shared.keyWindow?.rootViewController?.present(alert, animated: true, completion: nil)
    

    @objc func showPopupMsg() 
        alertview?.addSubview(CustomeView(frame: CGRect(x: textFieldOne!.frame.minX, y: textFieldOne!.frame.minX, width: 100, height: 50)))
    

下面是我的自定义视图

  class CustomeView: UIView 
            @IBOutlet var contentView: UIView!
            @IBOutlet weak var messageText: UILabel!

            override init(frame: CGRect) 
                super.init(frame: frame)
                commonInit()
            

            required init?(coder aDecoder: NSCoder) 
             super.init(coder: aDecoder)
                commonInit()
            

            private func commonInit()
                Bundle.main.loadNibNamed("CustomeView", owner: self, options: nil)
                addSubview(contentView)
                contentView.frame = self.bounds
                contentView.autoresizingMask = [.flexibleHeight, .flexibleWidth]
           

        

如何在视图控制器中显示此 nib 视图？

【问题讨论】：

提示：IBOutlet 连接

我连接了 iboulets。

今天是什么日子？免费投票日？顺便说一句，这是一个很好的答案：***.com/a/26326006/8374890

你建立了一个 IBOutlet 连接到什么！？

在xib中标注和查看

【参考方案1】：

我尝试了您的代码 sn-p，但出现了错误的访问错误。尝试删除该 xib 文件的自定义类 (CustomeView) 并在该 xib 文件的 File's Owner 中设置 CustomeView 视图类。还要检查你的messageText 和contentView 出口对象类型应该是File's Owner。