Dart / Flutter JSON Object to String

This article is to show you the basic operations to convert JSON objects in dart flutter.

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JSON Object to String

import 'dart:convert';

After the import, you can add the following code or wrap it around a function.

const data = {'text': 'foo', 'value': 2, 'status': false};  
final String jsonString = jsonEncode(data);  
print(jsonString);

// Output  
// {"text":"foo","value":2,"status":false,"extra":null}

String to JSON Object

To convert a String into a object in dart use the following code:

const String responseAPIData = '[{"id":1,"name":"Service1"},{"id":2,"name":"Service2"}]';

final dataResp = json.decode(responseAPIData);

// Print the name of the second product in the list     print(dataResp[1]['name']);  
// Output -> Service2

JSON Object to Dart Class

if you need to convert your JSON object to a dart class to modify each attribute sepatly then the following website should be good to use:

https://javiercbk.github.io/json_to_dart/

I hope this little example helped. Happy coding.