Flutter field has not been initialized - flutter

Question

i have a bool that i set to true if the account datas is right but my bool is set to late and it doesnt works
My Model:
bool _result = false;
Future login(String username, String password) async {
var url = "http://192.168.178.75/flutterconn/login.php";
var response = await http.post(Uri.parse(url), body: {
"username": username,
"password": password,
});
var data = await json.decode(response.body);
if (data == "success") {
setResult(true);
Fluttertoast.showToast(msg: "Erfolgreich Eingeloggt",toastLength: Toast.LENGTH_SHORT,gravity: ToastGravity.CENTER,fontSize: 16.0);
}else {
Fluttertoast.showToast(msg: "Nicht Eingeloggt",toastLength: Toast.LENGTH_SHORT,gravity: ToastGravity.CENTER,fontSize: 16.0);
}
//print(_result);
notifyListeners();
}
Future setResult(bool rs) async{
_result = await rs;
notifyListeners();
}
bool getResult(){
return _result;
}
My onPressed Method:
context.read<LoginModel>().login(
usernameController.text, passwordController.text);
print(context.read<LoginModel>().getResult());
if (context.read<LoginModel>().getResult()) {
context.read<FoodSelectionModel>().loadGalleryLinks();
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => FoodSelectionScreen()),
);
}
My Error:
The following LateError was thrown while handling a gesture:
LateInitializationError: Field '_result#21188420' has not been initialized.
The Bool is turned to late to true how can i set it faster.

Answer 1

i tried with putting async on my onPressed method and await it works thank you guys.
onPressed: () async {
await context.read<LoginModel>().login(
usernameController.text, passwordController.text);
print(context.read<LoginModel>().getResult());
if (context.read<LoginModel>().getResult()) {
context.read<FoodSelectionModel>().loadGalleryLinks();
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => FoodSelectionScreen()),
);
}