What is the equivalent of NSLineBreakMode in iOS 7 attributed strings drawing methods?

Question

There was a method

- (CGSize)drawInRect:(CGRect)rect withFont:(UIFont *)font lineBreakMode:(NSLineBreakMode)lineBreakMode alignment:(NSTextAlignment)alignment;

which I must replace now for iOS 7. I get as far as

NSDictionary *attributes = @{NSFontAttributeName: font};
[self drawInRect:rect withAttributes:attributes];

but how to specify the line break mode like word wrap? I searched documentation of Attributed string drawing symbols but no mention of line break mode. Is this automartically always word-wrap?

Léo Natan · Accepted Answer · 2017-07-02T07:35:15.357

58

You need to create a paragraph style.

NSMutableParagraphStyle *style = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
[style setLineBreakMode:NSLineBreakByWordWrapping];

NSDictionary *attributes = @{NSFontAttributeName: font, NSParagraphStyleAttributeName: style};
[self drawInRect:rect withAttributes:attributes];

More information here: https://developer.apple.com/documentation/uikit/nsparagraphstyle?language=objc

edited Jul 02 '17 at 07:35

answered Oct 05 '13 at 12:38

Léo Natan

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I think you can also use `[[NSMutableParagraphStyle alloc] init]` instead of the mutable copy. – zavié Dec 08 '15 at 17:44
@zavié mutableCopy was used because he wanted to instantiate a NSMutableParagraphStyle based on defaultParagraphStyle. If you init it as NSMutableParagraphStyle.default it turns into a NSParagraphStyle instead. So you have to turn it into a mutable by calling mutableCopy. – Allan Jul 08 '22 at 18:02

score 9 · Answer 2 · edited Jun 25 '19 at 14:29

9

In Swift 5:

let style = NSMutableParagraphStyle()
style.lineBreakMode = .byWordWrapping

let attributes: [NSAttributedString.Key: Any] = [
   .font: font,
   .paragraphStyle: style
]

edited Jun 25 '19 at 14:29

kelin

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answered Apr 07 '16 at 08:21

Phlippie Bosman

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What is the equivalent of NSLineBreakMode in iOS 7 attributed strings drawing methods?

2 Answers2

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