Running Your First Flutter App

Running Your First Flutter App

About

• First Run validates setup
• Default counter app demonstrates core concepts
• Supports multiple run targets
• Introduces development workflow

Main Topics

1. Run Targets

   • Definition: Device selection
   • Example:

     # List connected:
     flutter devices
     # Run on specific:
     flutter run -d iPhone12

2. Debug Mode

   • Definition: Development configuration
   • Example:

     # Default for:
     flutter run

3. Emulator Usage

   • Definition: Virtual device testing
   • Example:

     # Start emulator:
     flutter emulators --launch Pixel_5

4. Physical Device

   • Definition: Real hardware testing
   • Example:

     # Android:
     adb devices
     # iOS:
     flutter run -d '00008020-001A...'

5. First App Features

   • Definition: Default counter demo
   • Example:

     // Demonstrates:
     // - State management
     // - Widget composition
     // - Hot reload

How to Use

• Select: Target device
• Run: Start development
• Debug: Set breakpoints
• Reload: See changes instantly

How It Works

1. Build: Debug bundle
2. Deploy: To target
3. Launch: Main entrypoint
4. Connect: For hot reload

Example Session:

flutter emulators --launch Pixel_5
flutter run
# Press r for hot reload
# Press R for hot restart

Conclusion

Running the default Flutter app successfully verifies your development environment is properly configured while demonstrating core framework capabilities. This initial experience showcases Flutter’s hot reload feature and cross-platform execution that form the foundation of productive Flutter development.