push json data into a list of objects in flutter

Pushing JSON Data into a List of Objects in Flutter

To push JSON data into a list of objects in Flutter, you can follow these steps:

1. Define a class that represents the structure of your JSON data. Each property in the class should correspond to a key in the JSON object.
2. Use the json.decode() method to convert the JSON string into a Map<String, dynamic>.
3. Iterate over the JSON data and create instances of your class using the fromJson() method.
4. Add the created objects to a list.

Here's an example implementation:

import 'dart:convert';

class MyObject {
  final String name;
  final int age;

  MyObject({required this.name, required this.age});

  factory MyObject.fromJson(Map<String, dynamic> json) {
    return MyObject(
      name: json['name'],
      age: json['age'],
    );
  }
}

void main() {
  String jsonString = '[{"name": "John", "age": 25}, {"name": "Jane", "age": 30}]';
  List<MyObject> myObjects = [];

  List<dynamic> jsonList = json.decode(jsonString);
  jsonList.forEach((jsonObject) {
    MyObject myObject = MyObject.fromJson(jsonObject);
    myObjects.add(myObject);
  });

  // Now you have a list of objects populated with the JSON data
  print(myObjects);
}

In this example, we define a MyObject class with name and age properties. We then use the fromJson() factory method to create instances of MyObject from the JSON data. Finally, we add the created objects to the myObjects list.

Please note that this is a simplified example, and you may need to modify it based on your specific JSON structure and requirements.