21. Introduction to TextKit
Both the iPhone and, later, the iPad have supported a number of text presentation elements from their inception. Text fields, labels, text views, and Web views have been with the OS since its release. Over time these classes have been expanded and improved with the goal of giving developers more flexibility with rich text.
In the beginning the only practical way to display attributed text was to use a UIWebView and use HTML to render custom attributes; however, this was slow and carried with it terrible performance. iOS 3.2 introduced Core Text, which brought the full power of NSAttributedString to the platform from the Mac. Core Text, however, was complex and unwieldy and was largely shunned by developers who were ...
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