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How to create Custom Snackbar widget in Flutter

 

Snackbar widget in Flutter

Creating a custom Snackbar in Flutter involves creating a custom widget that mimics the appearance and behavior of the built-in Snackbar. Here's a step-by-step guide on how to create a simple custom Snackbar:


1. **Create the Custom Snackbar Widget**:

   Start by creating a new Dart file for your custom Snackbar widget. For this example, let's call it `custom_snackbar.dart`.


2. **Import Required Packages**:

   Import the necessary packages and widgets for creating your custom Snackbar:


   ```dart

   import 'package:flutter/material.dart';

   ```


3. **Define the CustomSnackbar Class**:

   Define a class that extends `StatelessWidget`. This class will represent your custom Snackbar:


   ```dart

   class CustomSnackbar extends StatelessWidget {

     final String message;


     CustomSnackbar({required this.message});


     @override

     Widget build(BuildContext context) {

       return Container(

         padding: EdgeInsets.all(16),

         color: Colors.grey[900],

         child: Row(

           children: [

             Icon(Icons.info, color: Colors.white),

             SizedBox(width: 16),

             Text(

               message,

               style: TextStyle(color: Colors.white),

             ),

           ],

         ),

       );

     }

   }

   ```


   In this example, the `CustomSnackbar` widget consists of a container with a padding, an icon, and a text message.


4. **Using the Custom Snackbar**:

   To use your custom Snackbar in your app, you can follow these steps:


   - First, import your custom Snackbar widget at the top of your Dart file:


     ```dart

     import 'custom_snackbar.dart';

     ```


   - Then, within your app's widget tree, call your custom Snackbar widget when needed. You can use a `ScaffoldMessengerState` to show the custom Snackbar:


     ```dart

     final GlobalKey<ScaffoldMessengerState> _scaffoldKey = GlobalKey<ScaffoldMessengerState>();


     // ...


     ScaffoldMessenger(

       key: _scaffoldKey,

       child: YourWidgetTree(), // Your main widget tree

     ),


     // ...


     ElevatedButton(

       onPressed: () {

         _scaffoldKey.currentState?.showSnackBar(

           SnackBar(

             content: CustomSnackbar(message: 'Custom Snackbar Message'),

           ),

         );

       },

       child: Text('Show Custom Snackbar'),

     ),

     ```


   This example demonstrates how to trigger the custom Snackbar when a button is pressed. Replace `'Custom Snackbar Message'` with the message you want to display.


Remember, this is a simple example to get you started with creating a custom Snackbar. You can further customize the appearance and behavior of the Snackbar to match your app's design and requirements.

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