UITextField边框以Swift格式指定半径

由于某些原因，我希望指定30的角半径将不会显示在Swift中Xcode编码的主板上

如果我使用passWordTextField.borderStyle=UITextField.borderStyle.roundedRect，则会显示textfield。这将不允许我指定角半径/borderStyle值，但如果我使用passWordTextField.borderStyle=UITextField.borderStyle.initrawValue:30

---

如果您还想在故事板上看到更改，可以使用自定义textfield类

public class CustomTextField: UITextField {
    public override init(frame: CGRect) {
      super.init(frame: frame)
      prepare()
    }

    required init?(coder decoder: NSCoder) {
      super.init(coder: decoder)
      prepare()

    private func prepare() {
       layer.cornerRadius = 30
    }
}

现在，在故事板上，您可以将Identity inspector中textfield的类更改为CustomTextField

您需要设置@IBDesignable和prepareforPrinterFaceBuilder，以反映界面生成器中的文本字段。以下是步骤： 1.创建UITextField的子类，如下所示

import UIKit
@IBDesignable
class CostumTxtField: UITextField {
    override func prepareForInterfaceBuilder() {
        makeCorenerRadius()
    }
    override func awakeFromNib() {
        super.awakeFromNib()
        makeCorenerRadius()

    }


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

    autocorrectionType = .no
    keyboardType = .default
    returnKeyType = .done
    clearButtonMode = .whileEditing
    contentVerticalAlignment = .center
    makeCorenerRadius()

    }

    required init?(coder decoder: NSCoder) {
      super.init(coder: decoder)

    func makeCorenerRadius(){
        backgroundColor = .white
        layer.cornerRadius = 20

}
}

在视图控制器中，按如下方式编辑函数：

import UIKit
@IBDesignable
class CostumTxtField: UITextField {
    override func prepareForInterfaceBuilder() {
        makeCorenerRadius()
    }
    override func awakeFromNib() {
        super.awakeFromNib()
        makeCorenerRadius()

    }


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

    autocorrectionType = .no
    keyboardType = .default
    returnKeyType = .done
    clearButtonMode = .whileEditing
    contentVerticalAlignment = .center
    makeCorenerRadius()

    }

    required init?(coder decoder: NSCoder) {
      super.init(coder: decoder)

    func makeCorenerRadius(){
        backgroundColor = .white
        layer.cornerRadius = 20

}
}

func customTextField (xco: CGFloat, yco: CGFloat, widthLength: CGFloat, heightLength: CGFloat, fontSize: CGFloat) {

    let passWordTextField =  UITextField(frame: CGRect(x: xco, y: yco, width: widthLength, height: heightLength )) {

    passWordTextField.placeholder = "Enter text here" //set placeholder text
    passWordTextField.font = UIFont.systemFont(ofSize: fontSize) // set font size of text field

    passWordTextField.delegate = self as? UITextFieldDelegate
    self.view.addSubview(passWordTextField)
}