react-native-dynamic-font

Getting started

$ npm install react-native-dynamic-font --save

Mostly automatic installation

$ react-native link react-native-dynamic-font

Manual installation

iOS

1. In XCode, in the project navigator, right click Libraries ➜ Add Files to [your project's name]
2. Go to node_modules ➜ react-native-dynamic-font and add ReactNativeDynamicFont.xcodeproj
3. In XCode, in the project navigator, select your project. Add libReactNativeDynamicFont.a to your project's Build Phases ➜ Link Binary With Libraries
4. Run your project (Cmd+R)<

Android

1. Open up android/app/src/main/java/[...]/MainActivity.java

• Add import com.ashrithks.dynamicfont.ReactNativeDynamicFontPackage; to the imports at the top of the file
• Add new ReactNativeDynamicFontPackage() to the list returned by the getPackages() method

2. Append the following lines to android/settings.gradle:

   include ':react-native-dynamic-font'
   project(':react-native-dynamic-font').projectDir = new File(rootProject.projectDir, 	'../node_modules/react-native-dynamic-font/android')

3. Insert the following lines inside the dependencies block in android/app/build.gradle:

     compile project(':react-native-dynamic-font')

Example of how to use

To load a font dynamically, you must first have a base64 string of your font file (TTF or OTF):

import { loadFont, loadFonts } from 'react-native-dynamic-font';

...
/* Load a single font */
loadFont('nameOfFont', base64FontString, 'ttf').then(function(name) {
	console.log('Loaded font successfully. Font name is: ', name);
});

/* Load a list of fonts */
loadFonts([{name: 'nameOfFont', data: base64FontString, type: 'ttf'}]).then(function(names) {
	console.log('Loaded all fonts successfully. Font names are: ', names);
});

...

Font loading using file path

You can download font file to file system and then load it to app without sending base64 to bridge.

import {loadFontFromFile} from 'react-native-dynamic-font';
import RNFetchBlob from 'rn-fetch-blob'

const fontFilePath = RNFetchBlob.fs.dirs.DocumentDir + "fonts/roboto.ttf";

loadFontFromFile("Roboto",  fontFilePath)
   .then(function(name) {
   	    console.log('Loaded font successfully. Font name is: ', name);
   });

Options

option | iOS | Android | Info ------ | ---- | ------- | ---- name | Not used | Used | Specify registered font name (doesn't work for iOS) data | Used | Used | This can be a data URI or raw base64... if it is raw base64 type must be specified, but defaults to TTF (data URI mime: font/ttf or font/otf) type | Used | Used | (optional) Specify the type of font in the encoded data (ttf or otf). Defaults to "ttf"

The Response

The ACTUAL name the font was registered with. Use this for your fontFamily.