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.