Introduction:

In Flutter, shimmer animations are used to indicate that content is loading or to provide a subtle animation effect. This tutorial will guide you through implementing a shimmer animation in Flutter using the shimmer package.

Content:

Step 1. Add Dependencies:

Include the shimmer package in your pubspec.yaml file. Open the file and add the following dependency:

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dependencies:
  shimmer: ^2.0.0

Read more"Explore Flutter Widgets to Create Cross-Platform Apps"

Save the file and run flutter pub get to fetch the package.

Step 2. Import Packages:

Import the required package in your Dart file:

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import 'package:shimmer/shimmer.dart';

Step 3. Implement the Shimmer Animation:

Wrap the widget that you want to animate with the Shimmer widget. This widget provides various parameters to customize the shimmer effect, such as duration, gradient, and direction.

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Shimmer(
  duration: Duration(seconds: 2), // Duration of the animation
  color: Colors.grey, // Color of the shimmer effect
  enabled: true, // Whether the animation is currently running
  direction: ShimmerDirection.ltr, // Direction of the shimmer animation (left to right)
  child: Container(
    height: 100.0,
    width: 200.0,
    color: Colors.grey[300],
  ),
)

Step 4. Use the Shimmer Animation:

Add the Shimmer widget to your app’s UI. You can place it inside a ListView, GridView, or any other layout widget to animate multiple items.

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@override
Widget build(BuildContext context) {
  return MaterialApp(
    title: 'Shimmer Animation Example',
    home: Scaffold(
      appBar: AppBar(
        title: Text('Shimmer Animation Example'),
      ),
      body: Center(
        child: Shimmer(
          duration: Duration(seconds: 2),
          color: Colors.grey,
          enabled: true,
          direction: ShimmerDirection.ltr,
          child: Container(
            height: 100.0,
            width: 200.0,
            color: Colors.grey[300],
            child: Center(
              child: Text('Shimmer'),
            ),
          ),
        ),
      ),
    ),
  );
}

Sample Code:

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// ignore_for_file: sort_child_properties_last, prefer_const_constructors

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

class ShimmerAnimaation extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        centerTitle: true,
        elevation: 2,
        title: Text("Shimmer Animation"),
        backgroundColor: Colors.blue[200],
      ),
      body: Padding(
        padding: EdgeInsets.symmetric(horizontal: 5, vertical: 5),
        child: SingleChildScrollView(
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            mainAxisAlignment: MainAxisAlignment.start,
            children: [
              SizedBox(
                height: 10,
              ),
              Text(
                "Restoration of a Defender 90 - without talking | Directors",
                style: TextStyle(color: Colors.black, fontSize: 14, fontWeight: FontWeight.bold),
              ),
              SizedBox(
                height: 10,
              ),
              Shimmer(
                // This is the ONLY required parameter
                child: Container(
                  decoration: BoxDecoration(color: Colors.grey[400], borderRadius: BorderRadius.circular(6)),
                  height: 190,
                ),
                // This is the default value
                duration: Duration(seconds: 1),
                // This is NOT the default value. Default value: Duration(seconds: 0)
                interval: Duration(seconds: 1),
                // This is the default value
                color: Colors.white,
                // This is the default value
                colorOpacity: 0.3,
                // This is the default value
                enabled: true,
                // This is the default value
                direction: ShimmerDirection.fromLTRB(),
              ),
              SizedBox(
                height: 20,
              ),
              Text(
                "CAMPING WITH A CAMPER TRUCK WITH STOVE IN HEAVY SNOW",
                style: TextStyle(color: Colors.black, fontSize: 12, fontWeight: FontWeight.bold),
              ),
              SizedBox(
                height: 10,
              ),
              Shimmer(
                // This is the ONLY required parameter
                child: Container(
                  height: 190,
                  decoration: BoxDecoration(color: Colors.grey[400], borderRadius: BorderRadius.circular(6)),
                ),
                // This is the default value
                duration: Duration(seconds: 1),
                // This is NOT the default value. Default value: Duration(seconds: 0)
                interval: Duration(seconds: 1),
                // This is the default value
                color: Colors.white,
                // This is the default value
                colorOpacity: 0.3,

                // This is the default value
                enabled: true,
                // This is the default value
                direction: ShimmerDirection.fromLTRB(),
              ),
              SizedBox(
                height: 20,
              ),
              Text(
                "Abandoned MONSTER Truck: Chevy 2500HD | First Wash in 12 Years! | Car Detailing Restoration",
                style: TextStyle(color: Colors.black, fontSize: 14, fontWeight: FontWeight.bold),
              ),
              SizedBox(
                height: 10,
              ),
              Shimmer(
                // This is the ONLY required parameter
                child: Container(
                  height: 190,
                  decoration: BoxDecoration(color: Colors.grey[400], borderRadius: BorderRadius.circular(6)),
                ),
                // This is the default value
                duration: Duration(seconds: 1),
                // This is NOT the default value. Default value: Duration(seconds: 0)
                interval: Duration(seconds: 1),
                // This is the default value
                color: Colors.white,
                // This is the default value
                colorOpacity: 0.3,

                // This is the default value
                enabled: true,
                // This is the default value
                direction: ShimmerDirection.fromLTRB(),
              ),
              SizedBox(
                height: 20,
              ),
            ],
          ),
        ),
      ),
    );
  }
}

Output:

Conclusion:

By following these steps, you can easily implement a shimmer animation in Flutter using the shimmer package. Use shimmer animations to enhance your app’s loading screens or to add subtle visual effects to your UI.

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