I made Flutter project, and I want to show the name of logged in user, but the code (the yellow highlight)(https://i.stack.imgur.com/E2mU1.jpg) return null, the result be like "Name: + null" please help
I want to show the name of logged in user from the firebase
Use FutureBuilder, Example -
class GetUserName extends StatelessWidget {
final String documentId;
GetUserName(this.documentId);
@override
Widget build(BuildContext context) {
CollectionReference users = FirebaseFirestore.instance.collection('users');
return FutureBuilder<DocumentSnapshot>(
future: users.doc(documentId).get(),
builder:
(BuildContext context, AsyncSnapshot<DocumentSnapshot> snapshot) {
if (snapshot.hasError) {
return Text("Something went wrong");
}
if (snapshot.hasData && !snapshot.data!.exists) {
return Text("Document does not exist");
}
if (snapshot.connectionState == ConnectionState.done) {
Map<String, dynamic> data = snapshot.data!.data() as Map<String, dynamic>;
return Text("Full Name: ${data['full_name']} ${data['last_name']}");
}
return Text("loading");
},
);
}
}