Flutter – Animated Splash Screen

The Animated Splash screen is used for a startup screen in a Flutter application. More or less all applications use them generally to show the logo of the institution and its creators awareness.  This although holds no functionality but it can be great to increase product awareness and promotion.

Let’s look deep into the implementation of the Animated Splash screen with the help of a simple application. To build so, follow the below steps:

• Add the dependency in pubspec.yaml file
• Import the dependency to the main.dart file
• Add the asset (logo) to the asset folder for use in the application
• Add the asset to the pubspec.yaml file
• Create the Homepage for which to transition after the splash screen

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

Adding the Dependency:

The animated_splash dependency can be added to the pubspec.yaml file as shown below:

Importing the Dependency:

To import the animated_splash dependency to the main.dart file, use the following line of code:

import 'package:animated_splash/animated_splash.dart';

Activating the Asset:

To use the logo image, the assets need to be added to the assets path as shown below:

Adding the logo:

Create an assets directory inside the root directory of the project. Inside the logo that you want to use inside the assets directory as shown below:

Creating the Homepage:

Make use of the StatefulWidget that extends to an appbar and a body.  We will also create a dummy function to delay the screen time of the logo. The function can be something like as shown below:

Dart

void main() {
  Function duringSplash = () {
    print('Something background process');
    int a = 123 + 23;
    print(a);

    if (a > 100)
      return 1;
    else
      return 2;
  };

Now to structure the application extent the StatefulWidget to Homepage as shown below:

Dart

class Home extends StatefulWidget {
  @override
  _HomeState createState() => _HomeState();
}

class _HomeState extends State<Home> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: Text('GeeksForGeeks'),
          backgroundColor: Colors.green,
        ),
        body: Center(
            child: Text('My Home Page',
                style: TextStyle(color: Colors.black,
                    fontSize: 20.0))));
  }
}

Complete Source Code:

Dart

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

void main() {
  Function duringSplash = () {
    print('Something background process');
    int a = 123 + 23;
    print(a);

    if (a > 100)
      return 1;
    else
      return 2;
  };

  Map<int, Widget> op = {1: Home(), 2: HomeSt()};

  runApp(MaterialApp(
    home: AnimatedSplash(
      imagePath: 'assets/gfg.png',
      home: Home(),
      customFunction: duringSplash,
      duration: 2500,
      type: AnimatedSplashType.BackgroundProcess,
      outputAndHome: op,
    ),
  ));
}

class Home extends StatefulWidget {
  @override
  _HomeState createState() => _HomeState();
}

class _HomeState extends State<Home> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: Text('GeeksForGeeks'),
          backgroundColor: Colors.green,
        ),
        body: Center(
            child: Text('My Home Page',
                style: TextStyle(color: Colors.black,
                    fontSize: 20.0))));
  }
}

Output: