Change text from plain to attributed. You you will several options for spacing.
- iOS - Creating a string that has custom kerning (letter spacing) | ios Tutorial;
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Ben Thomas Ben Thomas 1 11 NSKernAttributeName value: NSMakeRange 0, text. Paulo Mattos J2K J2K 6 Thanks J2K. I forgot about the ability to apply the kerning to a subrange of the string. The easiest way is to create a custom UILabel class and set the letter spacing from Storyboard.
NSRange location: Default value will be never applied. You should fix the code. NSMakeRange 0, attrStr. UIFont name: CGFloat 2. AnyObject] titleLabel.
Joel Nieman Joel Nieman 3 If you want to apply the letter spacing attribute to all UILabels in Interface Builder without modifying anything for particular font: Swift 4: Here, the first text has bad kerning, and the second has loose tracking. NSAttributedString consists of a string of text and one or more attributes applied to one or more ranges within that text.
A quick crash course in NSAttributedString: You can apply these attributes to the whole string, or just to part of the string using an range. This is the source of the confusion I mentioned above: The docs say:.eleatbelira.tk/cosmetology/when-mercy-rains-a-novel-the-zimmerman.pdf
UILabel with custom character spacing · GitHub
The value of this attribute is an NSNumber object containing a floating-point value. This value specifies the number of points by which to adjust kern-pair characters. Kerning prevents unwanted space from occurring between specific characters and depends on the font.
The value 0 means kerning is disabled. The default value for this attribute is 0. And from the UILabel docs on the attributedText property:. The docs appear to be incorrect here. One final note on tracking: Luckily, you can easily convert Adobe values to UIKit values with this formula:. It allows you to embed images or other types of data into attributed strings.
There is a convenience initializer that lets you create an attributed string with an attachment, but you can also manually create and attach your own NSTextAttachment objects.
You can also attach things other than images, but that is outside the scope of this post. For more, refer to the documentation. In the screenshot above, at the end of each line, words that need to wrap to the next line pull their image attachments with them, rather than leaving them stranded. You can do this using the no-break space character , which looks like a normal space but it prevents automatic line breaks.
Set up your text like this:. Use the BonSpecial class to easily access special spaces, dashes, and other obscure, pedant-pleasing characters. Here, we see images from an array being inserted between each word in a sentence. The images are separated from the words that follow them by no-break spaces, and each image-word pair is separated from the next by an em space. The same labels, rendered using the system font, running on iOS 8 and iOS 9.
See the difference? If both are present, a default is chosen, but it can be overridden. In every version of iOS prior to 9, the default system font used tabular figures. This was great for cases where numbers were vertically stacked, but it could make the spacing look uneven when they were used inline in a run of text.
Starting with iOS 9 and the new San Francisco system font, this default has been reversed: Whatever the default is in the typeface of your choice, there may be times when you need to override it. To change this and other advanced properties of a font, we use UIFontDescriptor. UIFontDescriptor allows you to create new fonts by modifying attributes of other fonts.
For example, you can create a bold or italic version of a given UIFont. In this case, we want a version of the default system font that uses tabular instead of proportional figure spacing. This obscure header is part of the Core Text framework. Core Text gives you full manual control over every aspect of text layout. Before using these tools to control advanced OpenType features, you will need to make sure that your font supports them. We can see that the font supports both proportional and monospace numbers.
You can now use newFont just as you would any other UIFont , and you will get the number behavior that you expect. I encourage you to browse that header yourself, as it contains all sorts of hidden typographic gems. A typographic feature related to figure spacing is figure case. Some typefaces have numbers that look like lowercase letters, with figures like 3 and 9 dropping below the typographic baseline.
These are called oldstyle figures, and they often look better inline with text, because they blend in better with lowercase letters. Lining figures, on the other hand, are the same size as uppercase letters, and they never drop below the baseline. An example of lining and oldstyle figures. Lining figures are more typically used in headlines, while oldstyle is more appropriate for body text.
We needed to control the figure case for large numeric callouts in Undercover Tourist, because our main font, Archer , defaulted to oldstyle lowercase figures on iOS, and the designs called for lining uppercase figures in large callouts showing ride wait times:. The designs specified lining figures for the large numbers, but iOS defaulted to oldstyle figures.
Adjusting figure case is done using the same mechanism as adjusting figure spacing, above, except that you use the kNumberCaseType , kUpperCaseNumbersSelector , and kLowerCaseNumbersSelector constants to achieve the desired effect. And remember, you can combine figure case and figure spacing if your font supports it! Do you have a project in mind? Fantastic article! Never realized UIFont gave so much specific information, will definitely reference this. Roger glad you liked it! As for sharing, just tweet away! No need to include a tracking referral or anything like that.
Thank you for a great article. This is a great article. I hope I find myself working on a project where I have a mandate to sweat so hard over the typographical details.
Change the space between Letters
It would be a real pleasure to dig into this stuff. Did you find or build any apps that let you dynamically play with all the attributed string and core text attributes live and see the results right in front of you? I had the same experience: VERY interesting article. Good to know that iOS provides all this possibility.