如何启用仅数字数字键盘 ios Swift [英] How to enable Only Numeric Digit Keyboard ios Swift

问题描述

我正在开发 ios 应用程序，目前我正面临这个问题.我有三个文本字段，我希望用户在这些字段中输入数字，即 1 2 3 等，但在数字键盘中还有一个阿拉伯数字选项.有没有办法从键盘上删除阿拉伯数字选项?

I am working on ios app current I m facing the problem. I have three text fields and I want from the user to give numeric digit input in these fields i.e 1 2 3 etc.but in Numeric keypad there is also an option for Arabic digits . is there any way to remove Arabic digit option from keypad?

推荐答案

你可以在委托方法中使用这个函数.

You can use this function in delegate method.

 public static func convertStringtoArabic(_ paramString: String) -> String {
    var finalString: String = paramString
    finalString = finalString.replacingOccurrences(of: "٠", with: "0")
    finalString = finalString.replacingOccurrences(of: "١", with: "1")
    finalString = finalString.replacingOccurrences(of: "٢", with: "2")
    finalString = finalString.replacingOccurrences(of: "٣", with: "3")
    finalString = finalString.replacingOccurrences(of: "٤", with: "4")
    finalString = finalString.replacingOccurrences(of: "٥", with: "5")
    finalString = finalString.replacingOccurrences(of: "٦", with: "6")
    finalString = finalString.replacingOccurrences(of: "٧", with: "7")
    finalString = finalString.replacingOccurrences(of: "٨", with: "8")
    finalString = finalString.replacingOccurrences(of: "٩", with: "9")
    return finalString
}

和你需要遵守的委托方法

And Delegate Method you need to conform

  func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {


    var newText = NSString(string: textField.text!).replacingCharacters(in: range, with: string)


    newText = Preferences.convertStringtoArabic(newText)

      // You can use this new text 

    let allowedCharacters = CharacterSet.decimalDigits
    let characterSet = CharacterSet(charactersIn: string)
    return allowedCharacters.isSuperset(of: characterSet)
}

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