Flutter: How to set firebase uid to users document id?

Question

How to set firebase uid to users document id? i'm getting error as "uid is null". Here is my code.

FirebaseAuth.instance.createUserWithEmailAndPassword(email:email, password: password).then((currentUser) => Firestore.instance
                                  .collection("users")
                                  .document(currentUser.uid)
                                  .setData({ "uid": currentUser.uid,


                                })); 

Answer 1

You can become the current user information with the.user ending and then you have access to the uid with currentUser.uid.

Future<void> createUser() async {
    final FirebaseUser currentUser = (await FirebaseAuth.instance.createUserWithEmailAndPassword(email: 'Test@gmail.com', password: '123456')).user;
    Firestore.instance.collection("users").document(currentUser.uid).setData({
        "uid": currentUser.uid,
      },
    );
  }