how to give badges to iconbutton in flutter?

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04-10-2024

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Adding Badges to Flutter's IconButton: A Simple Guide

Flutter's IconButton is a versatile widget for adding icons to your application. But what if you need to visually indicate a notification or a count associated with that button? That's where badges come in handy.

The Problem: Adding a badge to an IconButton isn't a built-in feature in Flutter. However, we can achieve this with a bit of creativity and the help of some third-party packages.

The Solution: This article will demonstrate how to implement badges on IconButtons in Flutter, offering a simple and effective approach.

Understanding the Approach

We'll be using the popular badges package from pub.dev. This package allows us to add badges to various widgets, including IconButton.

Here's a basic example of a IconButton with a badge:

import 'package:badges/badges.dart';
import 'package:flutter/material.dart';

class BadgeIconButton extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Badge IconButton'),
      ),
      body: Center(
        child: Badge(
          badgeContent: const Text('3', style: TextStyle(color: Colors.white)),
          child: IconButton(
            onPressed: () {
              // Button press logic
            },
            icon: const Icon(Icons.notifications),
          ),
        ),
      ),
    );
  }
}

This code will display an IconButton with a notification icon and a badge showing the number "3".

Customization Options:

The badges package provides ample customization options for your badges:

• Badge Shape: You can use badgeShape to set the shape of the badge, for instance, BadgeShape.circle.
• Badge Color: Use badgeColor to change the badge background color.
• Badge Position: Employ position to control the badge's position relative to the widget.
• Badge Size: Adjust the badge's size with elevation, badgeAnimation and animationType.

Here's an example of a customized badge:

Badge(
  badgeContent: const Text('New', style: TextStyle(color: Colors.white)),
  badgeColor: Colors.red,
  badgeShape: BadgeShape.circle,
  position: BadgePosition.topEnd(top: -10, end: -10),
  child: IconButton(
    onPressed: () {
      // Button press logic
    },
    icon: const Icon(Icons.shopping_cart),
  ),
)

Further Enhancements:

You can create even more dynamic badges by:

• Displaying dynamic counts: Fetch the count from a data source and update the badge accordingly.
• Using different icons: Experiment with different icons for different badge types.
• Implementing animations: Add animations to the badge to make it more visually appealing.

Conclusion

Adding badges to IconButtons in Flutter offers a simple and efficient way to add important visual cues to your app. The badges package provides a straightforward and customizable solution for enhancing the user experience.

Remember to experiment with different badge styles and configurations to find the best approach for your specific application.

Resources:

• badges package on pub.dev: https://pub.dev/packages/badges
• Flutter documentation: https://flutter.dev/