To ensure the persistence of data in Firebase auth.onAuthStateChanged in Expo React Native, you can use the AsyncStorage API.
When a user logs in or signs up, you can store their user data in AsyncStorage. When the app starts up, you can check if there is any user data stored in AsyncStorage. If there is, you can restore their session and log them in automatically.
Here's an example:
firebase.auth().onAuthStateChanged((user) => {
if (user) {
AsyncStorage.setItem('userData', JSON.stringify(user));
}
});
async componentDidMount() {
const userData = await AsyncStorage.getItem('userData');
if (userData) {
const user = JSON.parse(userData);
// Restore their session and log them in automatically
firebase.auth().signInWithEmailAndPassword(user.email, user.password);
}
}
By using AsyncStorage to persist user data, you can ensure that users don't have to log in every time they open the app.
Asked: 2023-06-10 08:26:19 +0000
Seen: 22 times
Last updated: Jun 10 '23