retrieving current user to show in personal profile

Admin 1
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hi im trying to retrive current user info from firebase but its showing me errors this error

enter image description here

this is my code

  final auth = FirebaseAuth.instance;
  final db = FirebaseFirestore.instance;
  User? user = FirebaseAuth.instance.currentUser;

Padding(
            padding: EdgeInsets.only(left: 20, right: 20),
            child: StreamBuilder(
              stream: db
                  .collection("Users")
                  .doc("list_students")
                  .collection("Students")
                  .doc(user!.uid)
                  .snapshots(),
              builder: (BuildContext context, AsyncSnapshot snapshot) {
                if (!snapshot.hasData) {
                  return Center();
                }
                return ListView.builder(
                    itemCount: snapshot.data.length,
                    itemBuilder: (BuildContext context, int index) {
                      return Stack;

this is a screenshots of my firebase enter image description here

firebase dart flutter
2 Answers

First of all, try to print 'snapshot' and 'snapshot.data' for you've got proper data from firebase.

user_106494630

You need to cast snapshot.data as a List type before you can call the length method on snapshot.data. I cannot tell from your included code what is the underlying type for snapshot.data.

Another way is to specify AsyncSnapshot<List<String>> snapshot in the builder header, assuming the underlying data type is a List<String>.

user_33656670
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