frhooks 1.5.0

Use react hooks in flutter!

Frhooks

use react like hooks in flutter.

Motivation

Have the same thinking of the flutter_hooks motivation. React hooks is more brief to manage local state, and StatefulWidget are verbose. This library brings hooks to flutter. If your are React person, you will like it.

Usage

useContext

class MyWidget extends HookWidget {
  Widget build(BuildContext context) {
    BuildContext context = useContext() 
    return Container()
  }
}

useState

class MyWidget extends HookWidget {
  Widget build(BuildContext context) {
    StateContainer result = useState(0)
    // result.state
    // result.setState
    return Container()
  }
}

useEffect

class MyWidget extends HookWidget {
  Widget build(BuildContext context) {
    useEffect(() {
      // do effect here.
      return () {
        // remove effect here
      }
    })
    return Container()
  }
}

useCallback

class MyWidget extends HookWidget {
  Widget build(BuildContext context) {
    var callback = useCallback(() {
      return 1
    }, [])
    // result == 1
    var result = callback()
    return Container()
  }
}

useMemo

class MyWidget extends HookWidget {
  Widget build(BuildContext context) {
    var c = useMemo(() => computeExpensiveValue(a, b), [a, b]);
    return Container()
  }
}

useRef

class MyWidget extends HookWidget {
  Widget build(BuildContext context) {
    final ref = useRef();
    // free to set and read ref.current
    return Container()
  }
}

useAnimationController

class MyWidget extends HookWidget {
  Widget build(BuildContext context) {
    final controller = useAnimationController();
    // controller.forward()
    return Container()
  }
}

Mixins

Frhooks aims to replace State completely, also include mixins.

HookAutomaticKeepAliveClientMixin

Hook version of AutomaticKeepAliveClientMixin.

class MyWidget extends HookWidget with HookAutomaticKeepAliveClientMixin {
  get wantKeepAlive => true;

  Widget build(BuildContext context) {
    super.build(context);
    return Container();
  }
}