FutureBuilder always return Instance of Future - flutter

Question

I try to display a custom message when user logs or when log fail.
My post api call returns nothing, so I wanted to base on response status code to know if log went well or not.
I did something like in my api :
Future<Response> login(String email, String password) async {
final http.Response response = await http.post(
baseUrl + 'auth/login',
headers: headers,
body: jsonEncode(<String, dynamic> {
'email': email,
'password': password
}),
);
return response.statusCode == 200 ? Response(statusCode: 200) : Response(message: "Failed to login");}
class Response {
final String message;
final int statusCode;
Response({this.message, this.statusCode});
factory Response.fromJson(Map<String, dynamic> json) {
return Response(
message: json["message"],
);}}
And I call this method inside a FutureBuilder to display the message:
FutureBuilder(
future: lap.login(emailController.text, passwordController.text),
builder: (BuildContext context, AsyncSnapshot<Response> snapshot) {
if(snapshot.hasData)
print(snapshot.data.statusCode);
return CircularProgressIndicator();
},);
In my print method, I print nothing I don't understand why it doesn't display status code I return in my api method.
Could someone know why ?

Answer 1

Well I finally did the job with a .then().
Still don't understand why the first way didn't do it but after all, it works.
onPressed: () {
if(_formKey.currentState.validate()) {
lap.login(emailController.text, passwordController.text)
.then((responseMessage) => Scaffold
.of(context)
.showSnackBar(SnackBar(content: Text(responseMessage.message))));
}
},