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Flutter – Skeleton Text
  • Last Updated : 28 Oct, 2020

In Flutter, the skeleton_text library is used to easily implement skeleton text loading animation. Its main application in a flutter app is to assure its users that the servers are working but running slow, but the content will eventually load. It also enhances the UI if the user connection is slow too.

in this article, we will be looking into the process of implementing the skeleton text to a flutter application by building a simple flutter app.  To build the same follow the below steps:

  • Add the skeleton_text dependency to the pubspec.yaml file
  • Import the dependency to the main.dart file
  • Build a simple app structure to implement the dependency
  • Call the SkeletoAnimation method in the body of the app

Now, let’s look into the steps in detail:

Adding the Dependency:

Add the skeleton_text dependency to the dependencies section of the pubspec.yaml file as shown below:

dependency



Importing the Dependency:

Use the below code to import the skeleton_text dependency to the main.dart file:

import 'package:skeleton_text/skeleton_text.dart';

Structuring the Application:

To give a Flutter application a simple structure with an appbar and a body, extend a StatelessWidget by forming a class as shown below:

Dart




class MyApp extends StatelessWidget {
    
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Skeleton Text',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        appBar: AppBar(
          title: Text("GeeksForGeeks"),
      backgroundColor: Colors.green,
    ),
        body:
      ),
    );
  }
}

Calling the Method:

Make use of the SkeletonAnimation method provided by the skeleton_text package to show skeleton text for a list object as shown below:

Dart




children: <Widget>[
                        SkeletonAnimation(
                          child: Container(
                            width: 70.0,
                            height: 70.0,
                            decoration: BoxDecoration(
                              color: Colors.grey[300],
                            ),
                          ),
                        ),
                        Column(
                          mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                          crossAxisAlignment: CrossAxisAlignment.start,
                          mainAxisSize: MainAxisSize.max,
                          children: <Widget>[
                            Padding(
                              padding: const EdgeInsets.only(
                                  left: 15.0, bottom: 5.0),
                              child: SkeletonAnimation(
                                child: Container(
                                  height: 15,
                                  width:
                                  MediaQuery.of(context).size.width * 0.6,
                                  decoration: BoxDecoration(
                                      borderRadius: BorderRadius.circular(10.0),
                                      color: Colors.grey[300]),
                                ),
                              ),
                            ),
                            Padding(
                              padding: const EdgeInsets.only(left: 15.0),
                              child: Padding(
                                padding: const EdgeInsets.only(right: 5.0),
                                child: SkeletonAnimation(
                                  child: Container(
                                    width: 60,
                                    height: 13,
                                    decoration: BoxDecoration(
                                        borderRadius:
                                        BorderRadius.circular(10.0),
                                        color: Colors.grey[300]),
                                  ),
                                ),
                              ),
                            ),
                          ],

Complete Source Code:

Dart




import 'package:flutter/material.dart';
import 'package:skeleton_text/skeleton_text.dart';
  
void main() => runApp(MyApp());
  
class MyApp extends StatelessWidget {
 // root of the application
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Skeleton Text',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: Scaffold(
        appBar: AppBar(
          title: Text("GeeksForGeeks"),
      backgroundColor: Colors.green,
    ),
        // list of items in body
        body: ListView.builder(
            scrollDirection: Axis.vertical,
            physics: BouncingScrollPhysics(),
            itemCount: 5,
            itemBuilder: (BuildContext context, int index) {
              return Padding(
                padding: const EdgeInsets.all(8.0),
                child: Container(
                  decoration: BoxDecoration(
                      borderRadius: BorderRadius.all(Radius.circular(10.0)),
                      color: Colors.white70),
                  child: Container(
                    child: Row(
                      crossAxisAlignment: CrossAxisAlignment.center,
                      mainAxisSize: MainAxisSize.max,
                      mainAxisAlignment: MainAxisAlignment.start,
                        
                      // SkeletonAnimation method
                      children: <Widget>[
                        SkeletonAnimation(
                          child: Container(
                            width: 70.0,
                            height: 70.0,
                            decoration: BoxDecoration(
                              color: Colors.grey[300],
                            ),
                          ),
                        ),
                        Column(
                          mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                          crossAxisAlignment: CrossAxisAlignment.start,
                          mainAxisSize: MainAxisSize.max,
                          children: <Widget>[
                            Padding(
                              padding: const EdgeInsets.only(
                                  left: 15.0, bottom: 5.0),
                              child: SkeletonAnimation(
                                child: Container(
                                  height: 15,
                                  width:
                                  MediaQuery.of(context).size.width * 0.6,
                                  decoration: BoxDecoration(
                                      borderRadius: BorderRadius.circular(10.0),
                                      color: Colors.grey[300]),
                                ),
                              ),
                            ),
                            Padding(
                              padding: const EdgeInsets.only(left: 15.0),
                              child: Padding(
                                padding: const EdgeInsets.only(right: 5.0),
                                child: SkeletonAnimation(
                                  child: Container(
                                    width: 60,
                                    height: 13,
                                    decoration: BoxDecoration(
                                        borderRadius:
                                        BorderRadius.circular(10.0),
                                        color: Colors.grey[300]),
                                  ),
                                ),
                              ),
                            ),
                          ],
                        ),
                      ],
                    ),
                  ),
                ),
              );
            }),
      ),
    );
  }
}

Output:

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