The Core iOS Developer’s Cookbook, Fifth Edition

Enabling Attributed Text

To handle style requests, you must change a flag that lets your text view work with attributed (in other words, styled) text. Set the allowsEditingTextAttributes property to YES. Upon doing so, several things happen:

The text view begins updating its attributedText property. This property enables you to retrieve the text view’s contents as an attributed string.

The view begins responding to a series of special UIResponder methods that toggle boldface, italic, and underline for selected text. These methods are detailed in ...