用子弹点格式化UILabel？

Question

是否可以格式化texta UILabel以显示项目符号？

如果是这样,我该怎么办？

Answer 1

也许在字符串中使用Unicode代码点作为项目符号？

Objective-C的

myLabel.text = @"\u2022 This is a list item!";

斯威夫特4

myLabel.text = "\u{2022} This is a list item!"

Answer 2

加上 " • "

即使我正在为我寻找这样的东西textView.我做了什么,只是在我的字符串上面附加字符串并将其传递给我textView,同样可以做到labels.

我为将来的观众回答了这个问题

Answer 3

这是Swift很好的解决方案

let label = UILabel()
label.frame = CGRect(x: 40, y: 100, width: 280, height: 600)
label.textColor = UIColor.lightGray
label.numberOfLines = 0

let arrayString = [
    "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.",
    "Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.",
    "Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.",
    "Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."
]

label.attributedText = add(stringList: arrayString, font: label.font, bullet: "?")

self.view.addSubview(label)

添加项目符号

func add(stringList: [String],
         font: UIFont,
         bullet: String = "\u{2022}",
         indentation: CGFloat = 20,
         lineSpacing: CGFloat = 2,
         paragraphSpacing: CGFloat = 12,
         textColor: UIColor = .gray,
         bulletColor: UIColor = .red) -> NSAttributedString {

    let textAttributes: [NSAttributedStringKey: Any] = [NSAttributedStringKey.font: font, NSAttributedStringKey.foregroundColor: textColor]
    let bulletAttributes: [NSAttributedStringKey: Any] = [NSAttributedStringKey.font: font, NSAttributedStringKey.foregroundColor: bulletColor]

    let paragraphStyle = NSMutableParagraphStyle()
    let nonOptions = [NSTextTab.OptionKey: Any]()
    paragraphStyle.tabStops = [
        NSTextTab(textAlignment: .left, location: indentation, options: nonOptions)]
    paragraphStyle.defaultTabInterval = indentation
    //paragraphStyle.firstLineHeadIndent = 0
    //paragraphStyle.headIndent = 20
    //paragraphStyle.tailIndent = 1
    paragraphStyle.lineSpacing = lineSpacing
    paragraphStyle.paragraphSpacing = paragraphSpacing
    paragraphStyle.headIndent = indentation

    let bulletList = NSMutableAttributedString()
    for string in stringList {
        let formattedString = "\(bullet)\t\(string)\n"
        let attributedString = NSMutableAttributedString(string: formattedString)

        attributedString.addAttributes(
            [NSAttributedStringKey.paragraphStyle : paragraphStyle],
            range: NSMakeRange(0, attributedString.length))

        attributedString.addAttributes(
            textAttributes,
            range: NSMakeRange(0, attributedString.length))

        let string:NSString = NSString(string: formattedString)
        let rangeForBullet:NSRange = string.range(of: bullet)
        attributedString.addAttributes(bulletAttributes, range: rangeForBullet)
        bulletList.append(attributedString)
    }

    return bulletList
}

结果如下:

Answer 4

在swift 3.1中

lblItemName.text = "\u{2022} This is a list item!"

Answer 5

是的。复制并粘贴以下项目符号：\xe2\x80\xa2Swift 的编译器可以在 Xcode 中根据需要解释和显示项目符号，无需其他任何操作。

\n\n

重复利用

\n\n

extension String {\n    static var bullet: String {\n        return "\xe2\x80\xa2 "\n    }\n}\n\n\nprint(String.bullet + "Buy apples")\nlet secondPoint: String = .bullet + "Buy oranges"\nprint(secondPoint)\n

\n\n

输出

\n\n

\xe2\x80\xa2 Buy apples\n\xe2\x80\xa2 Buy oranges\n

\n\n

可重复使用的阵列

\n\n

extension Array where Element == String {\n\n    var bulletList: String {\n        var po = ""\n        for (index, item) in self.enumerated() {\n            if index != 0 {\n                po += "\\n"\n            }\n            po += .bullet + item\n        }\n        return po\n    }\n}\n\n\nprint(["get apples", "get oranges", "get a bannana"].bulletList)\n

\n\n

输出

\n\n

\xe2\x80\xa2 get apples\n\xe2\x80\xa2 get oranges\n\xe2\x80\xa2 get a bannana\n

\n

Answer 6

在Swift 4中,我使用了"•"和新的Line

 @IBOutlet weak var bulletLabel: UILabel!
 let arrayOfLines = ["Eat egg for protein","You should Eat Ghee","Wheat is with high fiber","Avoid to eat Fish "]
 for value in arrayOfLines {
     bulletLabel.text = bulletLabel.text!  + " • " + value + "\n"
  }

输出: