Custom Fonts with Dynamic Type
One of the major shortcommings of Dynamic Type in iOS is the inability to use custom fonts.
To implement custom dynamic type fonts for a project I wrote a category on UIFont.
The app that currently uses this code in the store is availible here: www.appstore.com/QEDC.
Requirements
This will only work for iOS 7. I will test with iOS 8 as its release date approaches.
Installation
Cocoapods
Git Submodule
Manual
Clone this repository and drag UIFont+RSCustom{.h/.m} and customFont.plist to your project.
Usage
Adding Custom Fonts
Adding a Custom Font is a easy but an error can be hard to diagnose if done incorrectly.
Add Fonts to Target
Drag your font file to the project and make sure you add the font to the target
Add Fonts to info.plist
Open up your App's info.plist
Add a new Array entry called "Fonts provided by Application"
Add each custom font filename to the array
Defining Custom fonts in pList
You can specify which fonts you want to use for which category in a pList called customFonts. Below is a example.
Code
After importing UIFont+RSCustom.h in the necessary file, you can assign a custom font to any font instance like this:
self.labelBody.font = [UIFont customFontForTextStyle:UIFontTextStyleBody];
Unfortunately, this font will not automatically update if the user changes their preferred text size after you set the font. You need to observe for UIContentSizeCategoryDidChangeNotification in case this unlikely event occurs.
in viewDidLoad/WillAppear/DidAppear add
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(sizeChanged:)
name:UIContentSizeCategoryDidChangeNotification
object:nil];
Then implement sizeChanged:
-(void) sizeChanged:(id) sender {
self.labelBody.font = [UIFont customFontForTextStyle:UIFontTextStyleBody];
// call invalidateIntrinsicContentSize if using Auto Layout
[self.labelBody invalidateIntrinsicContentSize];
}
Feature Requests and Bug Fixes
Please open an issue for bugs and feature requests. I would prefer to to have a discussion about the bug/feature request and then we can discuss who will submit the pull request for the issue.
iOS 8 and XCode 6
I will be watching out for updates to XCode 6 and Interface Builder to render the fonts at design time.
License
MIT License