How do I decode JSON in flutter?

We have 3 steps to convert/parse JSON into Dart Object, Array:

Believe it or not, Flutter does not actually support JSON directly. Instead, JSON is interpreted as a map; Map<string, dynamic> to be exact. The reason for this is that a regular library for encoding and decoding JSON data would require the use of reflection .

Basic JSON serialization in Flutter is very simple. Flutter has a built-in dart:convert library that includes a straightforward JSON encoder and decoder . The following sample JSON implements a simple user model.