iOS Swift - 如何向 UITextView 添加不可编辑的后缀

iOS Swift - How to add a uneditable suffix to a UITextView

如何以编程方式向 UITextView 添加后缀 ("kr")?

谢谢!

我假设这是在用户键入以指示货币值时。

在 viewDidLoad 中分配您的 textview 委托(或您希望分配委托的任何地方):

override func viewDidLoad() {
    super.viewDidLoad()
    myTextView.delegate = self
}

然后在用户输入时将后缀添加到文本视图

func textView(_ textView: UITextView, shouldChangeTextIn range: NSRange, replacementText text: String) -> Bool {

    if string.characters.count > 0 {
        amountTypedString += string
        let newString = amountTypedString + "kr"
        myTextView.text = newString
    } else {
        amountTypedString = String(amountTypedString.characters.dropLast())
        if amountTypedString.characters.count > 0 {
            let newString = amountTypedString + "kr"
            myTextView.text = newString
        } else {
            myTextView.text = "0kr"
        }
    }
    return false
}