Expo and API Integration: Fetching Data with Axios

Today, mobile app development is shaped by API integrations to enhance user experience and efficiency. While Expo accelerates the React Native-based app development process, fetching data from APIs becomes quite easy with the Axios library. In this article, you will learn how to fetch data with Axios in an app using Expo.

Installing Expo and Creating a Project

First of all, we need to start a new project using the Expo CLI tool. You can create a new Expo project by entering the following command into your terminal or command prompt:

npx expo-cli init MyAxiosProject

Enter the created project and install the necessary libraries. Use the following command to install Axios:

npm install axios

Now that our project is ready, we can proceed to fetching data from an API with Axios.

Fetching Data with Axios

We will use Axios to fetch data from an API in our app. Below, you can find a sample application code. In this example, we will fetch a user list from the JSONPlaceholder API:

import React, { useEffect, useState } from 'react';
import axios from 'axios';
import { View, Text, FlatList } from 'react-native';

const App = () => {
  const [users, setUsers] = useState([]);
  const [loading, setLoading] = useState(true);

  useEffect(() => {
    const fetchUsers = async () => {
      try {
        const response = await axios.get('https://jsonplaceholder.typicode.com/users');
        setUsers(response.data);
      } catch (error) {
        console.error(error);
      } finally {
        setLoading(false);
      }
    };
    fetchUsers();
  }, []);

  if (loading) {
    return Loading...;
  }

  return (
    
       item.id.toString()}
        renderItem={({ item }) => {item.name}}
      />
    
  );
};

export default App;

After adding this code to your app, the user list will be displayed in your application. Here, the basic steps to get data from an API using Axios are shown.

Conclusion

In this article, you learned how to fetch data from an API using Expo and Axios. API integrations are an important part of app development and greatly simplify the process when done with the right tools. Axios is an effective library for interacting with APIs and provides extremely efficient results when used with Expo. With this knowledge, you can develop your own apps and discover even more.