how to get the values inside Instance of 'Future<Response<dynamic>?>' in Flutter? - flutter

Question

I'm using Dio for http requests and the function for post method is like this :
Future<Response?> post(String url, dynamic data) async {
try {
Response response = await baseAPI.post(url, data: data);
return response;
} on DioError catch(e) {
throw Failure(e.message);
}
}
then when I use this post method the response I get is in Instance of 'Future<Response?>'. So how can I access the response data inside this?
void login(String email, String password) {
dynamic data = jsonEncode(<String, String>{
'email': email,
'password':password,
});
Future<Response?> response = loginService.post('https://reqres.in/api/login',data) ;
print(response);
print('response data print');
}

Answer 1

as your loginService.post is returning a future type, you can get the Response value by adding await in front of it, but then your login function will have be declare it as async, such as:
Future<void> login(String email, String password) async {
dynamic data = jsonEncode(<String, String>{
'email': email,
'password':password,
});
Response? response = await loginService.post('https://reqres.in/api/login',data) ;
print(response);
print('response data print');
}
Or if you do not wish to async your login function, you can add .then to your post loginService.post like below:
Response? response;
loginService.post('https://reqres.in/api/login',data).then((data) => response = data)