Appending NSAttributedString with line break returns attributed string with wrong format

Question

I'm using NSMutableAttributedString and NSAttributedString to display a label text in two different font sizes. My approach is:

NSMutableAttributedString *muAtrStr = [[NSMutableAttributedString alloc]initWithString:@"2"];
NSAttributedString *atrStr = [[NSAttributedString alloc]initWithString:@"days" attributes:@{NSFontAttributeName : [UIFont fontWithName:@"HelveticaNeue-Bold" size:8]}];
[muAtrStr appendAttributedString:atrStr];

Which returns me an Attributed string with "2" in font size 12 and "days" in font size 8.

However, the other scenario is to add a line break after 2. I use the following code:

NSMutableAttributedString *muAtrStr = [[NSMutableAttributedString alloc]initWithString:@"2"];
NSAttributedString *atrStr = [[NSAttributedString alloc]initWithString:@"\ndays" attributes:@{NSFontAttributeName : [UIFont fontWithName:@"HelveticaNeue-Bold" size:8]}];
[muAtrStr appendAttributedString:atrStr];

This time attributed string applies the attribute on the full text. I get an attributed string with "2\ndays" in font size 8.

Please guide me if there is a better approach to do the needful. — user3404693, Mar 27 '14 at 07:43
You can also use `- (void)addAttribute:(NSString *)name value:(id)value range:(NSRange)range` method of attributed string to set attribute to different part of attributed string. And `setLineBreakMode` of label to `NSLineBreakByWordWrapping`. — Akhilrajtr, Mar 27 '14 at 08:00
For those who was stuck like me, set yourLabel.numberOfLines = 0; in the code. — Borzh, Oct 02 '17 at 21:41

Hussain Shabbir · Accepted Answer · 2014-03-27T09:21:02.323

43

Try this below code, it works fine:-

NSMutableAttributedString *muAtrStr = [[NSMutableAttributedString alloc]initWithString:@"2"];
NSAttributedString *atrStr = [[NSAttributedString alloc]initWithString:@"\ndays" attributes:@{NSFontAttributeName : [UIFont fontWithName:@"HelveticaNeue-Bold" size:8]}];
[muAtrStr appendAttributedString:atrStr];
self.lbl.numberOfLines = 0;
[self.lbl setAttributedText:muAtrStr];

Note:- Also put numberOfLines to 0 for allowing any number of lines

edited Mar 27 '14 at 09:21

answered Mar 27 '14 at 08:17

Hussain Shabbir

14,801
5
40
56

But in UILabel it is displaying both 2 and days in same font size i-e 8. I want to display 2 in 12 font size and days in 8 font size. – user3404693 Mar 27 '14 at 08:26
1

just for the "days" text. 12 font size is default for the "2" string. Working perfect when I don't use \n in the string. – user3404693 Mar 27 '14 at 08:32
sorry, it didn't work either... Might work for text view, not working for uilabel. – user3404693 Mar 27 '14 at 08:40
yes, also the uilabel displays both strings i-e 2 & days in the same font, No change – user3404693 Mar 27 '14 at 08:42
using iOS7.1 and setting the attributed text as you described. – user3404693 Mar 27 '14 at 08:55
You do not have to set numberOfLines to 0, and you can just set the property to 2 – DawnSong Aug 27 '15 at 13:41
Thank you very much.This is so helpful for us. – user3182143 Oct 12 '15 at 07:25
ahhh, those numberOfLines! – Alan Scarpa Jan 25 '18 at 21:15

score 14 · Answer 2 · answered Jan 11 '17 at 14:42

14

This works in Swift:

let attributedText = NSAttributedString(string: "Happy \nDays")
label.numberOfLines = 0
label.lineBreakMode = .byWordWrapping
label.attributedText = attributedText

answered Jan 11 '17 at 14:42

primulaveris

966
14
20

Appending NSAttributedString with line break returns attributed string with wrong format

2 Answers2

Linked