Programming Tutorials

loadAsync() vs useFonts() in expo - react native

By: Karthik Gupta in React-Native Tutorials on 2023-04-13  

expo-font provides two methods for loading custom fonts in React Native: loadAsync() and useFonts(). Here are some key differences between the two:

  1. loadAsync() is an asynchronous method that returns a promise. It loads the font(s) and returns an object with the loaded fonts.

useFonts() is a synchronous hook that returns an array. It loads the font(s) and returns a boolean value indicating whether the fonts are loaded or not.

  1. loadAsync() allows you to load multiple fonts at once, whereas useFonts() can only load one font at a time.

  2. loadAsync() is more suitable for situations where you need to load the fonts dynamically or conditionally (e.g., based on user settings or screen size).

useFonts() is more suitable for situations where you want to load the fonts globally and use them throughout the app.

  1. useFonts() is a React hook, so it can only be used within a functional component.

loadAsync() can be used in both functional and class components.

In summary, if you need to load fonts dynamically or conditionally, use loadAsync(). If you want to load fonts globally and use them throughout the app, use useFonts().






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