Set UILabel line spacing

如何修改多行UILabel行间距（行间距）？

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Edit: Evidently NSAttributedString will do it, on iOS 6 and later. Instead of using an NSString to set the label's text, create an NSAttributedString , set attributes on it, then set it as the .attributedText on the label. The code you want will be something like this:

NSMutableAttributedString* attrString = [[NSMutableAttributedString  alloc] initWithString:@"Sample text"];
NSMutableParagraphStyle *style = [[NSMutableParagraphStyle alloc] init];
[style setLineSpacing:24];
[attrString addAttribute:NSParagraphStyleAttributeName
    value:style
    range:NSMakeRange(0, strLength)];
uiLabel.attributedText = attrString;

NSAttributedString's old attributedStringWithString did the same thing, but now that is being deprecated.

For historical reasons, here's my original answer:

Short answer: you can't. To change the spacing between lines of text, you will have to subclass UILabel and roll your own drawTextInRect , create multiple labels, or use a different font (perhaps one edited for a specific line height, see Phillipe's answer).

Long answer: In the print and online world, the space between lines of text is known as "leading" (rhymes with 'heading', and comes from the lead metal used decades ago). Leading is a read-only property of UIFont , which was deprecated in 4.0 and replaced by lineHeight . As far as I know, there's no way to create a font with a specific set of parameters such as lineHeight ; you get the system fonts and any custom font you add, but can't tweak them once installed.

There is no spacing parameter in UILabel , either.

I'm not particularly happy with UILabel 's behavior as is, so I suggest writing your own subclass or using a 3rd-party library. That will make the behavior independent of your font choice and be the most reusable solution.

I wish there was more flexibility in UILabel , and I'd be happy to be proven wrong!

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从ios 6开始，你可以在UILabel中设置一个属性字符串：

NSString *labelText = @"some text"; 
NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:labelText];
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
[paragraphStyle setLineSpacing:40];
[attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [labelText length])];
cell.label.attributedText = attributedString ;

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You can control line spacing in the storyboard:

duplicate question

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