How to use response after POST Request? - flutter

Question

How to use data from response after POST request in Flutter/Dart?
this is my function:
signIn(String email, pass) async {
SharedPreferences sharedPreferences = await SharedPreferences.getInstance();
Map data = {
'email': email,
'password': pass
};
var jsonResponse = null;
var response = await http.post("http://10.0.2.2:80/user/login", body: data);
if(response.statusCode == 200) {
jsonResponse = json.decode(response.body);
if(jsonResponse != null) {
print(jsonResponse);
setState(() {
_isLoading = true;
});
Navigator.of(context).pushAndRemoveUntil(MaterialPageRoute(builder: (BuildContext context) => MainPage()), (Route<dynamic> route) => false);
}
}
else {
setState(() {
_isLoading = false;
});
print(response.body);
}
}
after run this function, my jsonResponse returns this data to me:
{id: 1, firstName: admin, lastName: admin, accountName: Kot filemon, email: admin#admin.pl, active: false, activateCode: 0, admin: true, latitude: xxx, longitude: xxx, profileImage: null}
so, how can I use this data(without another request to server) in my app on different screen?
I know how to use this type of data in react, because i'm a frontend developer but i don't have any idea how to use this here.
thanks for any help :)

Answer 1

You can save it to SharedPreferences if all the data in this response are common for all screens.

Answer 2

At this moment you cant store all that jsondata in one SharedPreferenceValue. You need to create one value foreach userdata like this:
signIn(String email, pass) async {
SharedPreferences sharedPreferences = await SharedPreferences.getInstance();
Map data = {
'email': email,
'password': pass
};
var jsonResponse = null;
var response = await http.post("http://10.0.2.2:80/user/login", body: data);
if(response.statusCode == 200) {
jsonResponse = json.decode(response.body);
if(jsonResponse != null) {
print(jsonResponse);
// this lines save the user data in the sharedpreferenceinstance
await prefs.setString('email',jsonResponse[email]);
await prefs.setString('accountName', jsonResponse[accountName]);
//-----------------now you cant send to another page
// if you need to read the saved data use=>prefs.getInt('email');
setState(() {
_isLoading = true;
});
Navigator.of(context).pushAndRemoveUntil(MaterialPageRoute(builder: (BuildContext context) => MainPage()), (Route<dynamic> route) => false);
}
}
else {
setState(() {
_isLoading = false;
});
print(response.body);
}
}