List items=json.decode(jsonStr);
print(items[0]["your_key"]);
Map<String, dynamic> user = json.decode(json);
print('${user['your_key']}!');
class User {
final String name;
final String age;
User(this.name, this.age);
User.fromJson(Map<String, dynamic> json)
: name = json['name'],
age = json['age'];
Map<String, dynamic> toJson() =>
<String, dynamic>{
'name': name,
'age': age,
};
}
String json = json.encode(user);