How to use multiple widgets | Switch case to use multiple widgets | How to use Switch case for widgets

In Flutter, managing multiple widgets dynamically can be achieved using a Switch statement. The examples below illustrate how to leverage a Switch statement to conditionally select and display widgets based on specific requirements. This technique is particularly useful when the choice of widget depends on dynamic conditions, and a switch case construct provides an organized and readable way to handle such scenarios.

Switch case Widget Example

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  final int _widgetType = 2; // Change this value to switch between widgets

  @override
  Widget build(BuildContext context) {
    Widget selectedWidget;

    switch (_widgetType) {
      case 1:
        selectedWidget = WidgetOne();
        break;
      case 2:
        selectedWidget = WidgetTwo();
        break;
      case 3:
        selectedWidget = WidgetThree();
        break;
      default:
        selectedWidget = Container(color:Colors.red, child:Text("Default"); // A default widget if no case matches
    }

    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Switch Case Example'),
        ),
        body: Center(
          child: selectedWidget,
        ),
      ),
    );
  }
}

class WidgetOne extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container(
      child: Text('Widget One'),
    );
  }
}

class WidgetTwo extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container(
      child: Text('Widget Two'),
    );
  }
}

class WidgetThree extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container(
      child: Text('Widget Three'),
    );
  }
}

Second Example Switch case Widget:-

This is a generic example that you can customize based on your specific needs. Simply pass an index value, and for instance, if the index is 0, instantiate and use WidgetOne();

Widget switchCaseToUseSingleWidget(index){
try{
 switch (index) {
      case 1:
        return  WidgetOne();

      case 2:
        return WidgetTwo();
        
      case 3:
        return WidgetThree();
        
      default:
        return Container(
                color:Colors.red, 
                child:Text("Default"); // A default widget if no case matches
    }
}
catch(exception){
return Container(
                color:Colors.red, 
                child:Text("Default");
}

}