缩进UILabel的第二行 [英] Indent second line of UILabel

问题描述

所以我有一个可能会或可能不会进入第二行的UILabel，具体取决于它是在iPhone还是iPad上。我想要完成的是在第二行缩进以正确排列，如果需要的话。

So I have a UILabel that may or may not go to a second line, depending if it is on iPhone or iPad. What I would like to accomplish is to have it indent on the second line to line up correctly, if needed.

在iPad上它几乎不需要第二次换行，并且根据它运行的iPhone，它可能会也可能不会。所以，实质上，我需要一种动态缩进第二行的方法，只有当有第二行时。

On iPad it will almost never need the second line break, and depending on which iPhone it is running on, it may or may not. So, in essence, I need a way to dynamically indent the second line, only when there is a second line.

推荐答案

使用标签的 NSAttributedString ，并设置 headIndent .apple.com / library / ios / documentation / UIKit / Reference / NSAttributedString_UIKit_Additions /＃// apple_ref / c / data / NSParagraphStyleAttributeName>段落样式：

Use an NSAttributedString for your label, and set the headIndent of its paragraph style:

NSMutableParagraphStyle *style = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
style.headIndent = 14;
NSDictionary *attributes = @{
    NSParagraphStyleAttributeName: style
};
NSAttributedString *richText = [[NSAttributedString alloc] initWithString:@"So this UILabel walks into a bar…" attributes:attributes];
self.narrowLabel.attributedText = richText;
self.wideLabel.attributedText = richText;

结果：

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