Implementing the Frosted Glass Effect in Flutter

Implementing the Frosted Glass Effect in Flutter

19 December 2024 Stephan Petzl Leave a comment Tech-Help

Creating a “frosted glass” effect in Flutter is a common request among developers, especially those aiming to achieve a design aesthetic similar to iOS applications. This effect provides a semi-transparent, blurred background, making it visually appealing and functional for various UI components.

Solution: Using BackdropFilter

The most effective way to achieve this frosted glass effect in Flutter is by utilizing the BackdropFilter widget. This widget allows you to apply a filter to the existing content behind it, such as a blur effect. Below is an example implementation that demonstrates how to incorporate this feature into your Flutter application:

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

void main() {
  runApp(MaterialApp(home: FrostedDemo()));
}

class FrostedDemo extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Stack(
        children: [
          ConstrainedBox(
            constraints: const BoxConstraints.expand(),
            child: FlutterLogo(),
          ),
          Center(
            child: ClipRect(
              child: BackdropFilter(
                filter: ImageFilter.blur(sigmaX: 10.0, sigmaY: 10.0),
                child: Container(
                  width: 200.0,
                  height: 200.0,
                  decoration: BoxDecoration(
                    color: Colors.grey.shade200.withOpacity(0.5),
                  ),
                  child: Center(
                    child: Text(
                      'Frosted',
                      style: Theme.of(context).textTheme.display3,
                    ),
                  ),
                ),
              ),
            ),
          ),
        ],
      ),
    );
  }
}

This code snippet demonstrates a simple yet effective way to overlay a blurred effect over a FlutterLogo. The BackdropFilter widget is wrapped around a Container to create the frosted glass effect, and you can adjust the blur intensity by modifying the sigmaX and sigmaY values.

Additional Considerations

While the above implementation is a great starting point, you can customize the frosted glass effect further. For instance, you can alter the opacity, change the background color, or even add more complex UI elements within the blurred area. Experimenting with these parameters can help you achieve the desired look and feel for your application.

Enhancing Your Testing Process with Repeato

As you integrate advanced UI effects like the frosted glass into your Flutter applications, ensuring they function correctly across different devices is crucial. This is where Repeato can be invaluable. Repeato is a no-code test automation tool specifically designed for iOS and Android apps. It allows you to create, run, and maintain automated tests efficiently, leveraging computer vision and AI. By using Repeato, you can rapidly test the frosted glass effect and other UI components to ensure a seamless user experience across platforms.

Check it out!

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