How to Set Theme in Flutter?

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This article will provide some of the most important example How to Set Theme in Flutter?. I explained simply about flutter theme example. This article will give you simple example of flutter theme tutorial. I explained simply about Use themes to share colors and font styles - Flutter.

you can see A guide to theming your app in Flutter

I will give you simple Example of Using themes in Flutter

So let's see bellow example:

Step 1: Create Flutter Project

Follow along with the setup, you will be creating an Flutter app.

$flutter create flutter_theme_tutorial   

Navigate to the project directory:

$cd flutter_theme_tutorial   

Step 2: Main File

Create a main.dart file in the lib directory

import 'package:flutter/material.dart';

void main() {runApp(MyApp());}

class MyApp extends StatelessWidget {
    @override
    Widget build(BuildContext context) {
        return MaterialApp(
            theme: ThemeData(
                // Define the default brightness and colors.
                brightness: Brightness.dark,
                primaryColor: Colors.lightBlue,
                accentColor: Colors.redAccent,

                // Define the default font family.
                fontFamily: 'Monotype Coursiva',

                // Define the TextTheme that specifies the default
                // text styling for headlines, titles, bodies of text, and more.
                textTheme: TextTheme(
                    headline1: TextStyle(fontSize: 32.0, fontStyle: FontStyle.italic, fontFamily: 'Hind')
                ),
            ),
            home: MyThemePage(),
        );
    }
}
class MyThemePage extends StatelessWidget {
    @override
    Widget build(BuildContext context) {
        return Scaffold(
            appBar: AppBar(
                title: Text('Flutter Theme Tutorial'),
            ),
            body: Center(
                child: Container(
                    color: Theme.of(context).accentColor,
                    child: Text(
                        'Themes contains the graphical appearances that makes the UI More Attractive.',
                        style: Theme.of(context).textTheme.headline1,
                    ),
                ),
            ),
            floatingActionButton: Theme(
                data: Theme.of(context).copyWith(
                    colorScheme:
                    Theme.of(context).colorScheme.copyWith(secondary: Colors.red),
                ),
                child: FloatingActionButton(
                    onPressed: null,
                    child: Icon(Icons.person),
                ),
            ),
        );
    }
}

Run this Debug App

Output :

I hope it will help you....