How to set and get data using SharedPreferences? - flutter

Question

Previously i do SharedPreferences to get user name. That was okay.
from API Response
"status": 200,
"message": "Login Successfully",
"result": {
"token": "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiJodHRwOlwvXC9mYzBhLTIwMi0xODctMy01Lm5ncm9rLmlvXC9hcGlcL2F1dGhcL2xvZ2luIiwiaWF0IjoxNjM5OTAxMDQ0LCJleHAiOjE2Mzk5ODc0NDQsIm5iZiI6MTYzOTkwMTA0NCwianRpIjoidndLWHlOYlJmTXdzMlFZbCIsInN1YiI6MiwicHJ2IjoiODdlMGFmMWVmOWZkMTU4MTJmZGVjOTcxNTNhMTRlMGIwNDc1NDZhYSJ9.Tr_CTZeKX6M2pycRal7CGeQ0i3FA3Fco0Xm5dwtWwDA",
"user": {
"id": 2,
"name": "hani",
Set and get
if (res.statusCode == 200) {
setState(() {
message = "Login Success";
});
print(res.body);
SharedPreferences localStorage = await SharedPreferences.getInstance();
localStorage.setString('user', json.encode(body['result']['user']));
String name;
_loadUserData() async {
SharedPreferences localStorage = await SharedPreferences.getInstance();
var user = jsonDecode(localStorage.getString('user'));
if (user != null) {
setState(() {
name = user['name'];
});
}
}
But if i want to get the id from this API Response, what should i write?
to set and get that id using SharedPreferences.
Or there's another way to get that id?
"status": "success",
"result": [
{
"id": 1,
"exercise_name": "Reading Set 1",
"exercise_type_id": 1,
"show": 1,
"finalized": 1,
"created_at": "2021-12-17T07:13:50.000000Z",
"updated_at": "2021-12-17T20:47:57.000000Z",
"total": 0
},
{
"id": 3,
"exercise_name": "Reading Set 2",
"exercise_type_id": 1,
"show": 1,
"finalized": 1,
"created_at": "2021-12-17T20:34:50.000000Z",
"updated_at": "2021-12-17T20:46:15.000000Z",
"total": 0
}
]
Sorry, I new to coding and flutter.
Hope someone can help

Answer 1

In the first response result is a JSONObject but in the second one it is JSONArray.
if (res.statusCode == 200) {
//do what ever you want
final data = jsonDecode(response.body) as Map<String, dynamic>;
for (var exercise in data['result']) {
//Now you can access each item
if(exercise['exercise_name']== 'Reading Set 1'){
//Store ID in SharedPrefrence
}
}
}