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Custom font can be easily added and used in iOS 3.2 or above. Yet it is a very popular question on for iOS Developers.

The Steps

1. Add the otf/ttf font into your Resources folder. The name of my font is BentonSansComp-Book.otf

2. Edit info.plist and add a key call UIAppFonts - value type should be Array. The friendly name for UIAppFonts is Fonts provided by application.

3. In item0 of the array enter the name of the font you added – in my case, BentonSansComp-Book.otf

4. Find the font name.

   IMPORTANT: The font name is not necessary the filename. Open with Font Book.app > Show font info > look for PostScript name. That’s the font name you should use. For my font, it happens that the filename == font name.

5. Unfortunately, Xcode interface builder does not let you change to your custom font. So you got to code it!

[myLabelView setFont:[UIFont fontWithName:@"BentonSansComp-Book" size:16]];

Framework

When you have the font in a framework (not application), then you need to handle differently because of bundle.

let bundle = Bundle(for: SomeClass.self) // SomeClass is in the framework along with the font resource
registerFont("BentonSansComp-Book", extension: "otf", in: bundle)

func registerFont(_ fontName: String, extension: String, in bundle: Bundle) {
    guard let fontURL = bundle.url(forResource: fontName, withExtension: `extension`) else { return }
    CTFontManagerRegisterFontsForURL(fontURL as CFURL, CTFontManagerScope.process, nil)
}