![]() In our case, we know the user is logged in if snapshot. The snapshot is the data emitted by the stream/observable. StreamBuilder takes our Observable user as the stream, then we implement a builder function that returns some UI widgets. For example, we don’t want to show SignIn with Google in the UI if the user is already logged in. This is a perfect use-case the login button. It is just a widget that depends on the value of a stream, so when the value of the stream changes you can conditionally render different widgets. 35 Firebase phone authentication is not working on Android real device. Both methods return what youre looking for. 1 App crashes upon phone authentication after changing package name - Flutter. Solved-Flutter: How to get Firebase Auth Credentials to update email and password-Flutter. The StatefulWidget is fine, but it contains a decent amount of boilerplate and in most cases I find StreamBuilder to be more flexible and concise. Flutter-Firebase phone Auth always returns Token mismatch on iOS. If not go to the authentication screen else go to the homepage. Using Email and Password, we will use GETX State Management to perform firebase. Import 'package:flutter/material.dart' import 'auth.dart' void main () => runApp ( MyApp ()) class MyApp extends StatelessWidget Step 4: StreamBuilder Login Button Redirect Router On Authentication Status Our user-screen flow is such that after onboarding we check if the user is authenticated or not. In this flutter tutorial, we will learn flutter firebase authentication.
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