The bottom of text is cut off when it's set to size returned from "sizeToFit" or "sizeThatFitsAttributedString"

[catjia1011]

I found this issue in my project with auto layout (content hugging). Then I did a test here.
The code is simple:

` UIFont *font = [UIFont systemFontOfSize:51];

NSMutableAttributedString * attrString = [[NSMutableAttributedString alloc] initWithString:@"The quick fox jumps."];
[attrString addAttributes:@{
                            NSFontAttributeName: font,
                            NSForegroundColorAttributeName: [UIColor blackColor],
                            } range:NSMakeRange(0, attrString.length)];


self.label = [[UILabel alloc] init];
self.label.attributedText = attrString;
self.label.backgroundColor = [UIColor colorWithWhite:0 alpha:0.1];
[self.label sizeToFit];
[self.view addSubview:self.label];

self.label2 = [[TTTAttributedLabel alloc] initWithFrame:CGRectZero];
self.label2.attributedText = attrString;
self.label2.backgroundColor = [UIColor colorWithWhite:0 alpha:0.1];
[self.label2 sizeToFit];
[self.view addSubview:self.label2];

self.label.center = CGPointMake(self.view.center.x, self.view.center.y - 50);
self.label2.center = CGPointMake(self.view.center.x, self.view.center.y + 50);

`

As shown in the picture, the bottom of the text is gone and the text is drawn with a strange offset (seems like descender from baseline). However, UILabel draws things well.

[jhersh]

It is programmer error to assign to attributedText. From the readme:

TTTAttributedLabel can display both plain and attributed text: just pass an NSString or NSAttributedString to the setText: setter. Never assign to the attributedText property.

Can you retry by assigning to text? It's also unclear why you're setting a lineSpacing of -100.

[catjia1011]

@jhersh sorry the "-100" was my testing code and just removed from my description. :p
I did test both the setText: and setAttributedText: methods and it was the same result.

[Coeur]

Latest version without the bug is TTTAttributedLabel 1.8.1
All versions from 1.9.1 to 1.13.4 have the issue.

[huynguyencong]

I used TTTAttributedLabel font size 30 and I had same problem. Thank @Coeur, I have used version 1.8.1 and have had no problem

[Coeur]

Issue was introduced on master with commit 7a08624 from 11 03 2014.
It is a "squash" of commits. I believe the one guilty sub-commit is 6e5fc1d

I'll now try to identify which line.

[Coeur]

The string that was used to justify the commit was:

qdvictory: @门梁真可怕 当中英文Mix Chinese & English, Line Height has error.🐻🐻🐻🐻🐻🐻

It was later removed from tests with 7905eb3

[KhomenokV]

Same issue when using autoresizing label with autolayout (when height for label is not specified) and with HelveticaNeue font and fontSize 15 or 16 pt:

Reproduces on the latest version and also on 1.8.1, 1.8.0, 1.7.0.

[Coeur]

@KhomenokV, did you try removing or modifying guilty lines like 6e5fc1d#commitcomment-17305527 ?

[KhomenokV]

I've checked it - unfortunately this doesn't fix the issue.

[Coeur]

As for you it affects versions older or equal to 1.8.1, it's probably a different issue.

[vzivanovvegait]

Set the same font size in storyboard (or NIB) and in NSFontAttributeName of NSMutableAttributedString, depends what you use in your project.