Storing application data

The AsyncStorage API works the same on both the iOS and Android platforms. You would use this API for applications that don't require any network connectivity in the first place or to store data that will eventually be synchronized using an API endpoint once a network becomes available.

To install the async-storage package, run the following command:

expo install @react-native-async-storage/async-storage

Let's look at some code that allows the user to enter a key and a value and then stores them:

import React, { useState, useEffect } from "react";
import { Text, TextInput, View, FlatList } from 
  "react-native";
import AsyncStorage from 
  "@react-native-async-storage/async-storage";
import styles from "./styles";
import Button from "./Button";
export default function App() {
  const [key, setKey] = useState(null);
  const [value, setValue] = useState...