**Course Title:** Flutter Development: Build Beautiful Mobile Apps **Section Title:** Introduction to Flutter and Development Environment **Topic:** Set up Flutter and create a simple 'Hello World' app to understand the project structure.(Lab topic) **Objective:** By the end of this lab, you will have a good understanding of the Flutter project structure and be able to create a simple "Hello World" application using Flutter. **Prerequisites:** Before starting this lab, ensure that you have: 1. Set up the Flutter development environment (Flutter SDK, IDE setup) 2. A basic understanding of the Dart programming language 3. Created your first Flutter application **Lab Instructions:** **Step 1: Create a new Flutter project** To create a new Flutter project, follow these steps: 1. Open your IDE (Integrated Development Environment) of choice, such as Android Studio, Visual Studio Code, or IntelliJ IDEA. 2. If you are using Android Studio, go to `File` > `New` > `New Flutter Project...`. If you are using Visual Studio Code, open the command palette by pressing `Ctrl + Shift + P` (Windows/Linux) or `Cmd + Shift + P` (Mac) and select `Flutter: New Project`. 3. Choose the template you want to use for your project. For this lab, we will use the `Flutter` template. 4. Create a new project by clicking `Finish` or pressing `Enter`. **Step 2: Understand the Flutter project structure** The Flutter project structure consists of several folders and files. Here is an overview of the main components: * `android`: This folder contains the Android-specific code for your application. * `assets`: This folder is used to store assets such as images, fonts, and audio files. * `ios`: This folder contains the iOS-specific code for your application. * `lib`: This folder is where you will write the majority of your Dart code. * `test`: This folder contains the test files for your application. * `pubspec.yaml`: This file is used to specify the dependencies and configuration of your application. **Step 3: Create a simple 'Hello World' app** To create a simple "Hello World" app, follow these steps: 1. Open the `lib/main.dart` file in your IDE. 2. Remove the existing code in the file and replace it with the following code: ```dart import 'package:flutter/material.dart'; void main() { runApp(MyApp()); } class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( title: 'Hello World', home: Scaffold( appBar: AppBar( title: Text('Hello World'), ), body: Center( child: Text( 'Hello, world!', style: TextStyle(fontSize: 24), ), ), ), ); } } ``` This code creates a basic Material application with an `AppBar` and a centered `Text` widget that displays the text "Hello, world!". **Step 4: Run the application** To run the application, follow these steps: 1. Make sure you have an emulator or physical device connected to your computer. 2. Click the `Run` button in your IDE or press `F5` to run the application. You should see the "Hello World" application running on your emulator or physical device. **Conclusion:** In this lab, you have created a simple "Hello World" application using Flutter and understood the basic project structure. You have also learned how to create a new Flutter project, write Dart code, and run the application on an emulator or physical device. **What's next?** In the next topic, 'Understanding Flutter widgets: Stateless and Stateful widgets', we will dive deeper into the world of Flutter widgets and learn how to use them to build more complex user interfaces. **External Resources:** * [Flutter Documentation](https://flutter.dev/docs): A comprehensive guide to Flutter. * [Dart Language Tour](https://dart.dev/guides): A tutorial on the Dart programming language. **Comments and Questions:** If you have any questions or need help, feel free to leave a comment below.