In Flutter, you can use the dart:convert library to parse JSON data. Here’s an example of how you can parse a JSON string into a Dart object:
import 'dart:convert';
String jsonString = '{"name": "John Doe", "email": "[email protected]"}';
Map<String, dynamic> userData = jsonDecode(jsonString);
print(userData['name']); // Output: John Doe
print(userData['email']); // Output: [email protected]
You can also parse JSON data into a custom Dart object. To do this, you’ll need to create a class that represents the data, and then use jsonDecode to parse the JSON into an instance of that class:
class User {
final String name;
final String email;
User({this.name, this.email});
factory User.fromJson(Map<String, dynamic> json) {
return User(
name: json['name'],
email: json['email'],
);
}
}
String jsonString = '{"name": "John Doe", "email": "[email protected]"}';
User user = User.fromJson(jsonDecode(jsonString));
print(user.name); // Output: John Doe
print(user.email); // Output: [email protected]
This approach is especially useful when working with complex JSON structures. By using a custom class, you can define the structure of the data and provide getters and setters for the properties, making it easier to access and manipulate the data in your app.
