OHAttributedStringAdditions

This pod contains categories on NSAttributedString to add a lot of very useful convenience methods to manipulate attributed strings.

Convenience methods include:

• font manipulation (setFont:range: and fontAtIndex:effectiveRange:)
• text color (setTextColor:range: and textColorAtIndex:effectiveRange:)
• background color
• bold, italics and underline styles
• add URLs to your text
• paragraph styles (indentation, line spacing, …)
• baseline adjustment, subscript, superscript, …
• And much more

It also contains:

• A category on UIFont to build a font given its postscript name and derive a bold/italic font from a standard one and vice-versa.
• A category on UILabel to make it easier to detect the character at a given coordinate, which is useful to detect if the user tapped on a link (if the character as a given tapped CGPoint has an associated NSURL) and similar stuff

Note that for advanced URL detection, you should still prefer UITextView (configuring it with editable=NO) and its dedicated delegate methods instead of using UILabel (which does not publicly expose its NSLayoutManager to properly compute the exact way its characters are laid out, forcing us to recreate the TextKit objects ourselves, contrary to UITextView).

Documentation

The source code is fully commented and documentation is auto-generated here.

There is also some help pages in the repository's wiki.

Installation

The suggested installation is via CocoaPods. Simply add the following line to your Podfile:

pod 'OHAttributedStringAdditions'

Then do a pod install.

Example

A demo project is provided in the repository. Don't hesitate to open Example/AttributedStringDemo.xcworkspace and play with it.

If you have CocoaPods, you can even try that Sample project even if you don't have cloned the project yet, by using pod try OHAttributedStringAdditions in your terminal.

Future improvements

• Improving documentation on edge cases, like documenting the behavior about when some attribute is not present or if we are allowed to pass nil to arguments.
• Adding support for OSX. This should only need little adjustments, like getting rid of the #import <UIKit/UIKit.h> in the pch file, or replacing UIColor and UIFont classes with NSColor and NSFont (using macros to switch from one to another depending on the SDK), but that still requires some work and tests.

Note: The original code of these categories comes from my old OHAttributedLabel pod, which is now deprecated as I don't have time to maintain it. As this previous implementation was based on CoreText and was not compatible (sometimes even crash) with UIKit/TextKit, I converted those categories to create this UIKit-compliant NSAttributedString, not related to CoreText and OHAttributedLabel anymore and that now work with latest versions of iOS/UIKit/TextKit.

Licence

This component is under the MIT Licence (See the LICENSE file).