focus_detector 0.0.1

Wrapper around Google's [VisibilityDetector](https://github.com/google/flutter.widgets/tree/master/packages/visibility_detector) for combining it with Flutter's WidgetsBindingObserver in order to achi [...]

FocusDetector

Wrapper around Google's VisibilityDetector for combining it with Flutter's WidgetsBindingObserver in order to achieve Android's onResume/onPause and iOS's viewDidAppear/viewDidDisappear on Flutter.

How Does it Work?

A FocusDetector widget takes in a child and optional onFocusGained/onFocusLost callbacks and fires those as the widget's focus changes. Some cases that trigger the focus change:

1. When the widget is first created;
2. When its route is popped back to;
3. When the app is sent to background/foreground while the widget was visible;

Article

https://edsonbueno.com

Sample

Check out the set-state-focus-detector or bloc-focus-detector branch of the Breaking Bapp repository.