Can I set ascender or descender for System UIFont?

Question

I am creating a alert badge using UILabel using following code:

    [label setText:@"67"];
    UIFont * font = [UIFont systemFontOfSize:11];
    [label setFont:font];
    [label sizeToFit];

    [label setTextAlignment:NSTextAlignmentCenter];
    [label setBackgroundColor:[UIColor yellowColor]];
    [label setTextColor:[UIColor whiteColor]];
    label.layer.cornerRadius = label.frame.size.height/2;

Badge screenshot

Everything is fine but vertical alignment of text is not correct. Its more close to top edge. How can I align text in vertical center of UILabel?

I read about ascender and descender properties of UIFont, can I use them to align text in vertical center of UILabel.

score 2 · Accepted Answer · answered Sep 26 '14 at 10:37

2

You could use an attributed string instead of a plain NSString for the label's text (so use the attributedText property instead of text), and use the NSBaselineOffsetAttributeName attribute described here at Apple.

answered Sep 26 '14 at 10:37

Cyrille

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score 1 · Answer 2 · edited May 23 '17 at 12:14

1

Another solution would be to subclass UILabel in order to add margins to the label, so you could define a custom "top margin" to compensate the baseline shift.

See this question to view the implementation details.

edited May 23 '17 at 12:14

Community

1
1

answered Sep 26 '14 at 10:38

Cyrille

25,014
12
67
90

It has more controls. Good to know this. – dev gr Sep 26 '14 at 11:43

score -1 · Answer 3 · edited May 23 '17 at 11:58

-1

To vertically align the text of UILabel use -

myLabel.numberOfLines = 0;
[myLabel sizeToFit];

For detailed answer check This SO Answer

edited May 23 '17 at 11:58

Community

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answered Sep 26 '14 at 10:30

Viper

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Can I set ascender or descender for System UIFont?

3 Answers3