中心3不均匀标签-界面生成器

我会这样做的。我会做这个的 标签,毕竟很容易居中。好吧,我想你知道怎么做。

然后我将使用一个属性化字符串来创建字符串的不同部分,包括“subscripting”。因此,首先我要扩展属性化的字符串键,以包括三个部分:

extension NSAttributedString.Key {
    static let part1 = NSAttributedString.Key(rawValue: "part1")
    static let part2 = NSAttributedString.Key(rawValue: "part2")
    static let part3 = NSAttributedString.Key(rawValue: "part3")
}

let mas = NSMutableAttributedString()
mas.append(NSAttributedString(string: "Late BED = ", attributes: [
    .font:UIFont.systemFont(ofSize: 15),
    .foregroundColor:UIColor.black,
    .part1:"part1"
]))
mas.append(NSAttributedString(string: "20.0", attributes: [
    .font:UIFont.systemFont(ofSize: 15),
    .foregroundColor:UIColor.black,
    .part2:"part2"
]))
mas.append(NSAttributedString(string: " Gy(3.0)", attributes: [
    .font:UIFont.systemFont(ofSize: 9),
    .foregroundColor:UIColor.black,
    .baselineOffset:-10,
    .part3:"part3"
]))
self.label.attributedText = mas

结果看起来像你得到的,当然你可以根据需要调整它:

一

例如,假设我想将“20.0”更改为“30.4”。这是你的第二个标签,也是我的 .part2 . 以下是您的操作方法:

let s = self.label.attributedText
// skip past part 1 and find part 2
var r = NSRange()
let mas = s?.mutableCopy() as! NSMutableAttributedString
let _ = mas.attribute(.part2, at: 0, longestEffectiveRange: &r, 
    in: NSRange(location: 0, length: 100))
// find range of part 2
let _ = mas.attribute(.part2, at: r.length, longestEffectiveRange: &r, 
    in: NSRange(location: 0, length: 100))
mas.replaceCharacters(in: r, with: "30.4")
self.label.attributedText = mas