Introduction:

Before you can start developing Flutter apps, you need to install the Flutter SDK on your development machine. The Flutter SDK includes the Flutter framework, Dart programming language, and various command-line tools necessary for Flutter development. The installation process may vary slightly depending on your operating system.

Here’s a more detailed description of the installation process for Flutter SDK on each platform, along with creating your first Flutter application:

Windows:

1. Download the Flutter SDK for Windows by visiting the official Flutter website (URL: https://flutter.dev/docs/get-started/install/windows).
2. Extract the downloaded ZIP file to a location on your system (e.g., C:\flutter).
3. Add the Flutter SDK’s bin directory to the system’s PATH variable:

• Open the Start menu and search for “Environment Variables.”
• Select “Edit the system environment variables” to open the System Properties window.
• Click on the “Environment Variables” button.
• In the “System variables” section, select the “Path” variable and click “Edit.”
• Add a new entry with the path to the Flutter SDK’s bin directory (e.g., C:\flutter\bin).
• Click “OK” to save the changes.

1. Open a Command Prompt window or PowerShell and run the following command to verify the installation:

   flutter doctor

The output should indicate the status of your Flutter installation and any additional steps you may need to take.

Creating your first Flutter application:

1. Open a Command Prompt window or PowerShell and navigate to the directory where you want to create your Flutter project.
2. Run the following command to create a new Flutter project:

   flutter create my_first_app

Replace “my_first_app” with your preferred project name.

3. Once the project is created, navigate into the project directory:

   cd my_first_app

4. Connect your Android or iOS device to your computer or start an emulator.
5. Run the following command to launch the app on your connected device/emulator:

   flutter run

This command will build the app and launch it on the connected device/emulator.

6. You should now see your first Flutter application running on the device/emulator.

macOS:

1. Download the Flutter SDK for macOS by visiting the official Flutter website (URL: https://flutter.dev/docs/get-started/install/macos).
2. Open a Terminal window and unzip the downloaded file to your preferred location (e.g., /Users/YourUsername/flutter).
3. Add the Flutter SDK’s bin directory to the system’s PATH variable. Run the following command in Terminal:

   export PATH="$PATH:/Users/YourUsername/flutter/bin"

Replace “YourUsername” with your actual username.

4. Run the following command in Terminal to verify the installation:

   flutter doctor

The output should display the status of your Flutter installation and any additional steps you may need to take.

Creating your first Flutter application:

1. Open Terminal and navigate to the directory where you want to create your Flutter project.
2. Run the following command to create a new Flutter project:

   flutter create my_first_app

Replace “my_first_app” with your preferred project name.

3. Once the project is created, navigate into the project directory:

   cd my_first_app

4. Connect your Android or iOS device to your computer or start an emulator.
5. Run the following command to launch the app on your connected device/emulator:

   flutter run

This command will build the app and launch it on the connected device/emulator.

6. You should now see your first Flutter application running on the device/emulator.

Linux:

1. Download the Flutter SDK for Linux by visiting the official Flutter website (URL: https://flutter.dev/docs/get-started/install/linux).
2. Open a Terminal window and extract the downloaded archive to your preferred location (e.g., /

home/YourUsername/flutter).

3. Add the Flutter SDK’s bin directory to the system’s PATH variable. Run the following command in Terminal:

   export PATH="$PATH:/home/YourUsername/flutter/bin"

Replace “YourUsername” with your actual username.

4. Run the following command in Terminal to verify the installation:

   flutter doctor

The output should display the status of your Flutter installation and any additional steps you may need to take.

Creating your first Flutter application:

1. Open Terminal and navigate to the directory where you want to create your Flutter project.
2. Run the following command to create a new Flutter project:

   flutter create my_first_app

Replace “my_first_app” with your preferred project name.

3. Once the project is created, navigate into the project directory:

   cd my_first_app

4. Connect your Android or iOS device to your computer or start an emulator.
5. Run the following command to launch the app on your connected device/emulator:

   flutter run

This command will build the app and launch it on the connected device/emulator.

6. You should now see your first Flutter application running on the device/emulator.

These detailed steps should help you install the Flutter SDK on Windows, macOS, and Linux, as well as create your first Flutter application.