How To Cast List<dynamic> To List<String> In flutter

If you are working on an Android project using flutter and not sure How To Cast List<dynamic> To List<String> In flutter then you are in right place, here's the solution to cast a List<dynamic> to a List<String> in Flutter, with code examples:

import 'package:flutter/material.dart';

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    // Assume we have a List<dynamic> containing data
    List<dynamic> dynamicList = getDynamicList();

    // We want to cast this dynamic list to a List<String>
    List<String> stringList = castDynamicListToStringList(dynamicList);

    // Now, we can use the stringList for further processing
    print(stringList);

    // Placeholder return widget
    return Container();
  }

  // Example method to get dynamic list
  List<dynamic> getDynamicList() {
    // Assume we fetch dynamic data from somewhere
    List<dynamic> data = ['Apple', 'Banana', 'Orange'];
    return data;
  }

  // Method to cast dynamic list to List<String>
  List<String> castDynamicListToStringList(List<dynamic> dynamicList) {
    // We iterate over each element in the dynamic list
    // and cast it to String before adding it to the new list
    List<String> stringList = [];
    for (dynamic item in dynamicList) {
      stringList.add(item.toString());
    }
    return stringList;
  }
}

import 'package:flutter/material.dart';

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    // Assume we have a List<dynamic> containing employee data
    List<dynamic> dynamicList = getDynamicEmployeeData();

    // We want to cast this dynamic list to a List<Employee>
    List<Employee> employeeList = castDynamicListToEmployeeList(dynamicList);

    // Now, we can use the employeeList for further processing
    print(employeeList);

    // Placeholder return widget
    return Container();
  }

  // Example method to get dynamic employee data
  List<dynamic> getDynamicEmployeeData() {
    // Assume we fetch dynamic employee data from somewhere
    List<dynamic> data = [
      {
        'Id': 1,
        'EmployeeName': 'Rajesh Kumar',
        'EmployeeEmailId': '[email protected]',
        'ContactNo': '9876543210',
        'CreatedAt': DateTime.now()
      },
      {
        'Id': 2,
        'EmployeeName': 'Sunita Sharma',
        'EmployeeEmailId': '[email protected]',
        'ContactNo': '9876543211',
        'CreatedAt': DateTime.now().subtract(Duration(days: 1))
      },
      {
        'Id': 3,
        'EmployeeName': 'Amit Patel',
        'EmployeeEmailId': '[email protected]',
        'ContactNo': '9876543212',
        'CreatedAt': DateTime.now().subtract(Duration(days: 2))
      }
    ];
    return data;
  }

  // Method to cast dynamic list to List<Employee>
  List<Employee> castDynamicListToEmployeeList(List<dynamic> dynamicList) {
    // We iterate over each element in the dynamic list
    // and create Employee objects from the data
    List<Employee> employeeList = [];
    for (var item in dynamicList) {
      Employee employee = Employee(
        id: item['Id'],
        employeeName: item['EmployeeName'],
        employeeEmailId: item['EmployeeEmailId'],
        contactNo: item['ContactNo'],
        createdAt: item['CreatedAt'],
      );
      employeeList.add(employee);
    }
    return employeeList;
  }
}

// Employee model class
class Employee {
  final int id;
  final String employeeName;
  final String employeeEmailId;
  final String contactNo;
  final DateTime createdAt;

  Employee({
    required this.id,
    required this.employeeName,
    required this.employeeEmailId,
    required this.contactNo,
    required this.createdAt,
  });

  @override
  String toString() {
    return 'Employee(id: $id, name: $employeeName, email: $employeeEmailId, contact: $contactNo, created at: $createdAt)';
  }
}