Overview
The focus_on_it package provides a simple way to detect when a widget gains or loses focus in a Flutter application. It allows developers to react to focus changes by executing custom logic, such as updating UI state, triggering animations, or validating input. This is particularly useful for forms, interactive components, and accessibility features. The package integrates seamlessly with existing widgets and supports all major platforms including Android, iOS, macOS, Windows, and Linux.
Use cases
- Form field interaction tracking
- Accessibility enhancements
- Dynamic UI updates based on focus
- Input validation on focus change
- Custom focus effects
Key features
- Simple focus event listeners
- Cross-platform support
- Minimal boilerplate
- Easy integration with existing widgets
- Real-time focus state detection
Suitable for
- Developers building interactive forms
- Apps requiring focus-based UI behavior
- Accessibility-focused applications
- Widgets needing dynamic responses to focus
- Flutter beginners learning state management
Considerations
- May require careful handling in complex widget trees
- Focus events may trigger frequently in rapid succession
- Not intended for high-performance critical paths
- Limited to widget-level focus detection
- Depends on Flutter's focus system stability