如何获得textview属性文本?

Question

我有uitextviewtext_receity，我用不同的颜色写文本。在我的解决方案中，我需要添加彩色文本，但原始文本和颜色必须保持不变。是否有一种方法可以正确地获得原始文本的颜色?

var toastcolor: UIColor = UIColor.black
var toast: String = "TEST..."            

if ChodButtonisOn == true {

toastcolor = UIColor(red: 118/255, green: 110/255, blue: 38/255, alpha: 1.0)

} else {

if HalfButtonisOn == true {
toastcolor = UIColor(red: 240/255, green: 127/255, blue: 18/255, alpha: 1.0)
}
}

let text1 = NSMutableAttributedString(string: text_recepty.text!)
let attr2 = [NSAttributedString.Key.foregroundColor: toastcolor]
let text2 = NSAttributedString(string: toast + "n", attributes: attr2)
text1.append(text2)

text_recepty.attributedText = text1
```

Answer 1

您需要从UITextView中获取attributedText，然后添加新的文本到它，如:

let existingText = myTextView.attributedText
let mutableText = NSAttributedString(attributedString: existingText)
// Then add your text

查看NSMutableAttributedString文档，了解如何完成最后一部分。