How to get the current user id from Firebase in Flutter

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To get the current user ID from Firebase in Flutter, you can use the FirebaseAuth class and the currentUser property. Here’s an example:

import 'package:firebase_auth/firebase_auth.dart';

FirebaseUser currentUser = await FirebaseAuth.instance.currentUser;
String userId = currentUser.uid;

This code imports the FirebaseAuth class and calls the currentUser property to get the current user. If the user is signed in, the code stores the user’s ID in the userId variable. If the user is not signed in, currentUser will be null, and you should handle this case appropriately in your code.

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