I've got sign in methode in my provider.
Future<void> signIn(
String email, String password, BuildContext context) async {
SharedPreferences sharedPreferences = await SharedPreferences.getInstance();
final clientID = "com.super.app";
final body = "username=$email&password=$password&grant_type=password";
final String clientCredentials =
const Base64Encoder().convert("$clientID:".codeUnits);
try {
final http.Response response =
await http.post("http://localhost:8888/auth",
headers: {
"Content-Type": "application/x-www-form-urlencoded",
"Authorization": "Basic $clientCredentials"
},
body: body);
final jsonResponse = json.decode(response.body);
// if (jsonResponse["error"] != null) {
// throw HttpException(jsonResponse["error"]);
// }
_userId = 1;
_token = jsonResponse['access_token'];
_expiryDate = DateTime.now().add(
Duration(
seconds: jsonResponse['expires_in'],
),
);
_autoLogout();
notifyListeners();
final userData = json.encode(
{
'userId': 1,
'email': email,
'token': _token,
'expiryDate': _expiryDate.toIso8601String(),
},
);
sharedPreferences.setString('userData', userData);
} catch (error) {
print(error.toString()); //<-- misleading error
}
}
All works fine but when incorrect login credential are passed then I get misleading error
flutter: NoSuchMethodError: The method '_mulFromInteger' was called on null.
Receiver: null
Tried calling: _mulFromInteger(1000000)
The back end passing error code 400 and body {"error": "invalid client"} but I get that strange error as output. So what does that error means and why do I get that instead of body
As from @Suragch comments I had few problem in my code. First I thought that when server return 400 code then it will automatically throw an error and skip rest of the lines.. I was wrong so basically I had to uncomment my code for http exceptions and in my button catch the error
try {
await Provider.of<Auth>(context, listen: false).signIn(
emailController.text, passwordController.text);
} on HttpException catch (error) {
print(error.toString());
} catch (error) {
print(error);
}