Aug 25, 2022by @kodeazy

flutter how to create array of user defined objects in a list?

Home » flutter » flutter how to create array of user defined objects in a list?

flutterdart

In this blog we will discuss on how to create array of user defined objects using list in flutter.
Below is the syntax of creating userdefined list.
```
List<SomeNullableType> eXampleList = []
```
Here in above syntax in place of SomeNullableType we specify the type of Objects to store the data.

Below is an example syntax to store objects of type Employee in a list.

List<Empoyee> EmployeeDetails = [
new Empoyee(27, 103, "Suresh")
];

In the above syntax we created a list and added objects of type Employee into the list.
Below is the sample program of creating array of Employee objects.

void main() {
  List<Empoyee> EmployeeDetails = [
    new Empoyee(27, 103, "Suresh"),
    new Empoyee(23, 102, "Ramesh"),
    new Empoyee(21, 105, "Mahesh"),
    new Empoyee(29, 104, "Gopi")
  ];
  EmployeeDetails.forEach((emp) {
    print("Name is :" +
        emp.name +
        " Age is:" +
        (emp.age).toString() +
        " Salary is :" +
        (emp.age).toString());
  });
}
class Empoyee {
  int age;
  int salary;
  String name;
  Empoyee(@required this.age, @required this.salary, @required this.name) {}
}
class MyApp extends StatelessWidget {
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
          backgroundColor: Colors.yellow,
          body: Center(child: new Text("Hello, World!"))),
    );
  }
}

Output:

Name is :Suresh Age is:27 Salary is :27
Name is :Ramesh Age is:23 Salary is :23
Name is :Mahesh Age is:21 Salary is :21
Name is :Gopi Age is:29 Salary is :29