将 UILabel 的文本的一部分设置为粗体，将另一部分设置为斜体

Question

有没有办法将 UILabel 的一部分设置为粗体而另一部分设置为斜体？

如

The quick brown fox jumps over the lazy dog.

我似乎无法使用 TTTAttributedLabel

Answer 1

您可以使用 NSMutableAttributedString

NSMutableAttributedString *strText = [[NSMutableAttributedString alloc] initWithString:@"Setting different for label text"];
[strText addAttribute:NSFontAttributeName
              value:[UIFont fontWithName:@"Helvetica-Bold" size:22]
              range:NSMakeRange(0, 10)];
[strText addAttribute:NSFontAttributeName
              value:[UIFont fontWithName:@"Helvetica-Italic" size:22]
              range:NSMakeRange(10, 10)];

Swift 4个代码：

var strText = NSMutableAttributedString(string: "Setting different for label text")
strText.addAttribute(.font, value: UIFont(name: "Helvetica-Bold", size: 22)!, range: NSRange(location: 0, length: 10))
strText.addAttribute(.font, value: UIFont(name: "Helvetica-Italic", size: 22)!, range: NSRange(location: 10, length: 10))

Answer 2

从 iOS 6 开始，您可以将 UILabel.attributedText 设置为 NSAttributedString

var customString = NSMutableAttributedString(string: "my String");

customString.addAttribute(NSFontAttributeName, value: UIFont.systemFontOfSize(15), range: NSRange(1...3))

var label  = UILabel();
label.attributedText = customString;