fade_shimmer 2.4.0

A fade shimmer library to implement loading effects like the latest Facebook loading skeleton UI with smooth fade transitions.

FadeShimmer

A customizable Flutter package that provides elegant shimmer loading effects with smooth fade transitions. Perfect for creating skeleton screens while your content is loading.

Demo

Features

• 🎨 Customizable colors and dimensions
• 🌓 Built-in light and dark themes
• ⏱️ Configurable animation duration
• 🌊 Support for staggered animations with delay parameter
• 🔄 Synchronized animations across multiple shimmer elements
• 🔘 Convenient factory for creating circular shimmer effects

Installation

Add fade_shimmer to your pubspec.yaml file:

dependencies:
  fade_shimmer: ^2.3.0

Run the following command to install:

flutter pub get

Usage

Import the package

import 'package:fade_shimmer/fade_shimmer.dart';

Basic Usage

Create a rectangular shimmer

FadeShimmer(
  height: 8,
  width: 150,
  radius: 4,
  fadeTheme: FadeTheme.light,
)

Create a circular shimmer (for avatars/profile pictures)

FadeShimmer.round(
  size: 60,
  fadeTheme: isDarkMode ? FadeTheme.dark : FadeTheme.light,
)

Custom colors

FadeShimmer(
  height: 8,
  width: 150,
  radius: 4,
  highlightColor: Color(0xffF9F9FB),
  baseColor: Color(0xffE6E8EB),
)

Advanced Usage

Staggered animation effect

Create a wave-like loading effect by adding delays to each shimmer element:

Column(
  children: [
    FadeShimmer(
      height: 8,
      width: 150,
      radius: 4,
      millisecondsDelay: 0,
      fadeTheme: FadeTheme.light,
    ),
    SizedBox(height: 8),
    FadeShimmer(
      height: 8,
      width: 170,
      radius: 4,
      millisecondsDelay: 300, // 300ms delay
      fadeTheme: FadeTheme.light,
    ),
    SizedBox(height: 8),
    FadeShimmer(
      height: 8,
      width: 120,
      radius: 4,
      millisecondsDelay: 600, // 600ms delay
      fadeTheme: FadeTheme.light,
    ),
  ],
)

Changing animation duration

You can change the global animation duration for all shimmer widgets:

// Change animation duration to 3 seconds (default is 1 second)
FadeShimmer.animationDurationInMillisecond = 3000;

Note: This change affects all FadeShimmer widgets in your application.

Customization

Available Properties

Property	Type	Description
width	double	Width of the shimmer container (required)
height	double	Height of the shimmer container (required)
radius	double	Border radius of the shimmer container (default: 0)
fadeTheme	FadeTheme	Predefined theme (light or dark)
highlightColor	Color	The brighter color that the shimmer transitions to
baseColor	Color	The darker color that the shimmer starts with
millisecondsDelay	int	Delay before the animation starts (default: 0)

Predefined Themes

• FadeTheme.light - Light gray colors suitable for light backgrounds
• FadeTheme.dark - Dark gray colors suitable for dark backgrounds

Example Project

Check out the example directory for a complete sample application using FadeShimmer.

Compatibility

• Supports Flutter 3.0 and above
• Null safety compatible
• Works on all platforms (Android, iOS, Web, Desktop)

Contributing

Contributions are welcome! If you find a bug or want a feature, please open an issue on the GitHub repository.

License

This project is licensed under the MIT License - see the LICENSE file for details.