flutter convert json string to json

To convert a JSON string to a JSON object in Flutter, you can make use of the jsonDecode() method provided by the dart:convert library. Here's an example:

import 'dart:convert';

void main() {
  String jsonString = '{"name": "John", "age": 30, "city": "New York"}';

  // Convert JSON string to JSON object
  Map<String, dynamic> jsonObject = jsonDecode(jsonString);

  // Access values from JSON object
  String name = jsonObject['name'];
  int age = jsonObject['age'];
  String city = jsonObject['city'];

  // Print the values
  print('Name: $name');
  print('Age: $age');
  print('City: $city');

In the above example, we have a JSON string jsonString that represents an object with three properties: "name", "age", and "city". We use the jsonDecode() method to convert this string into a JSON object of type Map<String, dynamic>. We can then access the values from the JSON object using the corresponding keys.

The output of the above code will be:

Name: John
Age: 30
City: New York

This demonstrates how to convert a JSON string to a JSON object in Flutter using the jsonDecode() method. Remember to import the dart:convert library to use the jsonDecode() function.