Select Data from Json String in Flutter

Question

I have a JSON string like this :

{
    "message": "Login successful",
    "result": [
        {
            "_id": "60ed65f6cb33920004c3117a",
            "username": "ajay",
        }
    ]
}

I Convert above string in jsondecode(response.body) format using flutter I got below string

    {
       message: Login successful, 
       result:[
          { 
             _id: 60ed65f6cb33920004c3117a,
             username: ajay
          }
       ]
   }

I Can find _id and username of result section when user logged in successfully

Does this answer your question? Parsing JSON in Dart

Tirth Patel
– Tirth Patel

2021-07-22 10:12:51 +00:00
Commented Jul 22, 2021 at 10:12 — Tirth Patel
– Tirth Patel, Commented Jul 22, 2021 at 10:12

fravolt · Accepted Answer · 2021-07-22 09:55:38Z

3

You can use string indexes to access these properties:

print(object['result'][0]['_id']);        // 60ed65f6cb33920004c3117a
print(object['result'][0]['username']);   // ajay

Now this is not ideal, and if you have many such objects it's probably worth it to use a model class and serialize your JSON into that, as highlighted in the Flutter documentation:

https://flutter.dev/docs/development/data-and-backend/json#serializing-json-inside-model-classes

Extra link

The documentation also refers to the cookbook for a more complete and comprehensive example of using such model classes:

https://flutter.dev/docs/cookbook/networking/background-parsing

answered Jul 22, 2021 at 9:55

fravolt

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Comments

Kishan sharma · Accepted Answer · 2021-07-22 10:01:04Z

1

Try to use the following code snippet, you will get your results on var id and username:

var id;
var username;

var resp = jsonDecode(response.body);

id = resp['result'][0]['_id'];
username = resp['result'][0]['username'];

answered Jul 22, 2021 at 10:01

Kishan sharma

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