I have saved json data in SharedPreferences like this
storage.setString("user", userInfo);
now I want to edit value inside userInfo which consist of name & phone number ,
so what I can do to change the value like the name
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2 Answers
// get your json
var source = prefs.getString('user');
var json = jsonDecode(source);
// make changes
json['userInfo'] = {
'name': 'new name',
'phoneNo': 'new number'
};
// put it back
prefs.setString('user', jsonEncode(json));
3 Comments
CopsOnRoad
Glad to hear that, I also added a way to show how you can edit your json file.
Mohamed Alaa
Yes, I appreciate your effort for sure <3 , so is it the best way to edit the user profile ?
CopsOnRoad
I am not sure what the context is here, so can't recommend anything without seeing your app logic.
first of all import the convert library;
import 'dart:convert';
get your jsonString
String jsonString = await storage.getString("user");
and decode it to Dart;
var yourJson = json.decode(jsonString);
Edit your json and convert it to String again;
String editedJsonString = json.encode(yourJson);
finally save it to shared with same key;
storage.setString("user", editedJsonString);
