example of how to separate sample project into separate files?

Question

When you create a new project in Flutter v3.19, it creates a default app in /lib/main.dart

/lib/main.dart contains three classes:

class MyApp extends StatelessWidget

class MyHomePage extends StatefulWidget

class _MyHomePageState extends State<MyHomePage>

What is the best way to organize the file structure of the project so that those classes can be in separate folders/files? This will be for a small project.

Is there an example of what main.dart should look like so that it can import those classes? I couldn't find an example in the Flutter docs about this.

I tried to find an example of this, but couldn't. I would expect either simple docs from Flutter that explain this or the sample project to be setup with this in mind.

I found examples of folder structure, but nothing specifically for the sample project that comes with Flutter.

If you go to docs.flutter.dev, you can see the Samples button where you can access a lot of project samples including their source codes. — Dhafin Rayhan
– Dhafin Rayhan, Commented Mar 4, 2024 at 4:39
Thank you @DhafinRayhan. I found an example which matches pretty closely what I'm looking for: flutter.github.io/samples/testing_app.html This shows a simple folder structure and contains related tests. Also includes basic routing. — user23524156
– user23524156, Commented Mar 4, 2024 at 6:02

dev.skas · Accepted Answer · 2024-03-04 04:57:12Z

0

As simple format you can create two simple file cut and paste the code like following

cut class MyApp extends StatelessWidget and create a file my_app.dart and paste it.

cut

class MyHomePage extends StatefulWidget

class _MyHomePageState extends State<MyHomePage>

together and create a file named home_page.dart and paste it.

now you will find some error on the newly created file add import 'package:flutter/material.dart'; on both files. now you will find an error on main.dart so you have to import my_app.dart file and also import home_page in my_app Page.

file Structure

main.dart

my_app.dart

home_page.dart

import file path will change according to project name and file structure

edited Mar 4, 2024 at 4:57

answered Mar 4, 2024 at 4:51

dev.skas

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1 Comment

user23524156 Over a year ago

Thank you, @dev.skas. That's very clear and helpful.

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