是否有一种unicode方法可以使字符串的一部分变为粗体？

Question

在Localizable.strings中

"rulesText" = "No illegal posting! \n No weird stuff! \n There is no tolerance for objectionable content, they will be removed!";

我可以参与这个大胆的活动吗？喜欢没有奇怪的东西!或者在这个意义上使用unicode字符的东西？或者其他一些方式？

我这样使用它:

textView.text = "\n\n " + NSLocalizedString("rulesText", comment: "")

Answer 1

在textView.text中使用时,更简单的方法是使用NSMutableAttributedString.这是一个例子:

NSMutableAttributedString *attrString = [[NSMutableAttributedString alloc]
        initWithString: NSLocalizedString("rulesText", comment: "")];

[attrString beginEditing];
[attrString addAttribute:kCTFontAttributeName 
                   value:[[UIFont boldSystemFontOfSize:12] fontName]
                   range:NSMakeRange(2, 4)]; // use range as per your character index range

[attrString endEditing];

使用它会自动加粗从第2个索引开始然后是4个字符的字符.例如:1234567890 - 12 3456 7890

希望这可以帮助.

对于SWIFT语言:

let font:UIFont? = UIFont.boldSystemFontOfSize(12.0)

myMutableString.addAttribute(NSFontAttributeName, value: font!, range:  NSRange(location: 2, length: 4));

http://www.raywenderlich.com/77092/text-kit-tutorial-swift

Answer 2

感谢Martins先前的回答，我编辑了他的解决方案以适合我的情况，并且效果很好。
签出并支持他的解决方案：在iOS的Swift中从纯文本（Android格式）中创建属性字符串

因此，这基本上发生了变化：

<a>hey</a> to size 14 bold  
<b>hey</b> to size 12 bold  
<u>hey</u> to underlined  

它很容易为它添加更多功能。

//localizable.strings
"rulesText" = "\n\n<a>The following will be removed</a> \n\n<b><u>Harassment</u></b>\n\nOther Stuff"

//viewdidload
textView.font = UIFont(name: "HelveticaNeue-Light", size: 12) //This is here to set up rest of the texts font
textView.attributedText = convertText(NSLocalizedString("rulesText", comment: "")) 

//method for string conversation
func convertText(inputText: String) -> NSAttributedString {

    var attrString = NSMutableAttributedString(string: inputText)
    let boldFont = UIFont(name: "Helvetica-Bold", size: 12)
    let boldBigFont = UIFont(name: "Helvetica-Bold", size: 14)

    attrString = fixText(attrString, attributeName: NSFontAttributeName, attributeValue: boldFont!, propsIndicator: "<b>", propsEndIndicator: "</b>")
    attrString = fixText(attrString, attributeName: NSFontAttributeName, attributeValue: boldBigFont!, propsIndicator: "<a>", propsEndIndicator: "</a>")
    attrString = fixText(attrString, attributeName: NSUnderlineStyleAttributeName, attributeValue: NSUnderlineStyle.StyleDouble.rawValue, propsIndicator: "<u>", propsEndIndicator: "</u>")

    return attrString
}

func fixText(inputText:NSMutableAttributedString, attributeName:AnyObject, attributeValue:AnyObject, propsIndicator:String, propsEndIndicator:String)->NSMutableAttributedString{
    var r1 = (inputText.string as NSString).rangeOfString(propsIndicator)
    while r1.location != NSNotFound {
        let r2 = (inputText.string as NSString).rangeOfString(propsEndIndicator)
        if r2.location != NSNotFound  && r2.location > r1.location {
            let r3 = NSMakeRange(r1.location + r1.length, r2.location - r1.location - r1.length)
            inputText.addAttribute(attributeName as String, value: attributeValue, range: r3)
            inputText.replaceCharactersInRange(r2, withString: "")
            inputText.replaceCharactersInRange(r1, withString: "")
        } else {
            break
        }
        r1 = (inputText.string as NSString).rangeOfString(propsIndicator)
    }
    return inputText
}