如何在 Swift 中附加带有属性字符串的属性文本字符串

Question

我想在 Swift 中附加一个属性文本和另一个属性文本。请提供在 Swift.

中追加两个属性字符串的任何示例代码

Answer 1

使用 NSMutableAttributedString 来实现。

例子

Swift 5

let yourAttributes = [NSForegroundColorAttributeName: UIColor.black, NSFontAttributeName: UIFont.systemFont(ofSize: 15)]
let yourOtherAttributes = [NSForegroundColorAttributeName: UIColor.red, NSFontAttributeName: UIFont.systemFont(ofSize: 25)]

let partOne = NSMutableAttributedString(string: "This is an example ", attributes: yourAttributes)
let partTwo = NSMutableAttributedString(string: "for the combination of Attributed String!", attributes: yourOtherAttributes)

partOne.append(partTwo)

Swift 3

let yourAttributes = [NSForegroundColorAttributeName: UIColor.black, NSFontAttributeName: UIFont.systemFont(ofSize: 15)]
let yourOtherAttributes = [NSForegroundColorAttributeName: UIColor.red, NSFontAttributeName: UIFont.systemFont(ofSize: 25)]

let partOne = NSMutableAttributedString(string: "This is an example ", attributes: yourAttributes)
let partTwo = NSMutableAttributedString(string: "for the combination of Attributed String!", attributes: yourOtherAttributes)

let combination = NSMutableAttributedString()

combination.append(partOne)
combination.append(partTwo)

combination 表示您的最终字符串，其中包含 yourAttributes 和 yourOtherAttributes

提供的两种格式

更老

let yourAttributes = [NSForegroundColorAttributeName: UIColor.blackColor(), NSFontAttributeName: UIFont.systemFontOfSize(15)]
let yourOtherAttributes = [NSForegroundColorAttributeName: UIColor.redColor(), NSFontAttributeName: UIFont.systemFontOfSize(25)]

let partOne = NSMutableAttributedString(string: "This is an example ", attributes: yourAttributes)
let partTwo = NSMutableAttributedString(string: "for the combination of Attributed String!", attributes: yourOtherAttributes)

let combination = NSMutableAttributedString()

combination.appendAttributedString(partOne)
combination.appendAttributedString(partTwo)

Answer 2

，已修改以避免空 NSMutableAttributedString 声明。在 Swift 3.1:

中有效

let yourAttributes = [NSForegroundColorAttributeName: UIColor.blackColor(), NSFontAttributeName: UIFont.systemFontOfSize(15)]
let yourOtherAttributes = [NSForegroundColorAttributeName: UIColor.redColor(), NSFontAttributeName: UIFont.systemFontOfSize(25)]

let partOne = NSMutableAttributedString(string: "This is an example ", attributes: yourAttributes)
let partTwo = NSMutableAttributedString(string: "for the combination of Attributed String!", attributes: yourOtherAttributes)

partOne.append(partTwo)

partOne 就是您的最终字符串，其中包含所有属性。无需中间 "combiner"。

Swift 4

let yourAttributes: [NSAttributedString.Key: Any] = [.foregroundColor: UIColor.black, .font: UIFont.systemFont(ofSize: 15)]
let yourOtherAttributes: [NSAttributedString.Key: Any] = [.foregroundColor: UIColor.red, .font: UIFont.systemFont(ofSize: 25)]

let partOne = NSMutableAttributedString(string: "This is an example ", attributes: yourAttributes)
let partTwo = NSMutableAttributedString(string: "for the combination of Attributed String!", attributes: yourOtherAttributes)

partOne.append(partTwo)

Answer 3

使用扩展，

extension NSMutableAttributedString{
    func getAttributedStringByAppending(attributedString:NSMutableAttributedString) -> NSMutableAttributedString{
        let newAttributedString = NSMutableAttributedString()
        newAttributedString.append(self)
        newAttributedString.append(attributedString)
        return newAttributedString
    }
}

用法： attributedString1, attributedString2 是两个NSMutableAttributedString, then

let combinedAttributedString = attributedString1.getAttributedStringByAppending(attributedString: attributedString2)

Answer 4

Swift 5

根据“glace”的回答，我只是更新了字体属性和 swift 版本。

    let boldFontAttributes = [NSAttributedString.Key.foregroundColor: UIColor.black, NSAttributedString.Key.font: UIFont.boldSystemFont(ofSize: 17)]
    let normalFontAttributes = [NSAttributedString.Key.foregroundColor: UIColor.darkGray, NSAttributedString.Key.font: UIFont.systemFont(ofSize: 15)]
    let partOne = NSMutableAttributedString(string: "This is an example ", attributes: boldFontAttributes)
    let partTwo = NSMutableAttributedString(string: "for the combination of Attributed String!", attributes: normalFontAttributes)

    let combination = NSMutableAttributedString()
    
    combination.append(partOne)
    combination.append(partTwo)
    lblUserName.attributedText = combination

Answer 5

Swift 5

您可以创建不同的属性：

let kString1Attributes = NSAttributedString.attributes(foregroundColor: UIColor.white)
let kString2Attributes = NSAttributedString.attributes(foregroundColor: UIColor.black)

定义您的属性字符串：

let attrString1 = NSAttributedString(string: "my string" + " ",
                                     attributes: kString1Attributes)
let attrString2 = NSAttributedString(string: "string 2",
                                     attributes: kString2Attributes)

将它们包含在一个数组中并将它们组合在一起：

let combinedAttrString = [attrString1, attrString2].joined()

如何在 Swift 中附加带有属性字符串的属性文本字符串

how to append Attributed Text String with Attributed String in Swift

nsattributedstring

swift

例子

Swift 5

Swift 3

更老

Swift 5

Swift 5