react-navigation-collapsible

React Navigation Extension for Collapsible Header. Make your header of react-navigation collapsible.

Try Expo Snack

Try Example.

$ cd example
$ npm install
$ react-native run-ios
$ react-native run-android

Usage

react-navigation v2?

If you're using react-navigation v2, please use [email protected] and 2.0.0 README.

Expo

If you use Expo, add this lines to your App.js. (It only affects Android)

/* Support Expo */
import { setExpoStatusBarHeight } from 'react-navigation-collapsible';
import { Constants } from 'expo';
setExpoStatusBarHeight(Constants.statusBarHeight);

Default Header

(MyScreen.js)

import { withCollapsible } from 'react-navigation-collapsible';
const AnimatedFlatList = Animated.createAnimatedComponent(FlatList);

class MyScreen extends Component{
  static navigationOptions = {
    title: 'My Screen'
  };

  render(){
    const { paddingHeight, animatedY, onScroll } = this.props.collapsible;

    return (
      <AnimatedFlatList 
        ...
        contentContainerStyle={{paddingTop: paddingHeight}}
        scrollIndicatorInsets={{top: paddingHeight}}
        _mustAddThis={animatedY}
        onScroll={onScroll} 

        // if you want to use 'onScroll' callback.
        // onScroll={Animated.event(
        //   [{nativeEvent: {contentOffset: {y: animatedY}}}],
        //   {useNativeDriver:true, listener:this.onScroll})} 
        />
    )
  }
}

export default withCollapsible(MyScreen, {iOSCollapsedColor: '#031'});

See example/src/S0_DefaultHeader.js

Extra Header (Search Bar)

See example/src/S1_ExtraHeader.js

Default Header With Tab

See example/src/S2_DefaultHeaderForTab.js and example/src/TabChild1Screen.js

Extra Header With Tab (e.g Facebook Group)

See example/src/S3_ExtraHeaderForTab.js and example/src/TabChild1Screen.js

API

HoC and config method

type CollapsibleParams = {
  iOSCollapsedColor: string, // iOS only
} | {
  collapsibleComponent: React.Component,
  collapsibleBackgroundStyle: {
    ...React.Style
  } & {
    disableFadeoutInnerComponent?: boolean,
    paddingBottom?: number,
  }
}

function withCollapsible (WrappedScreen, collapsibleParams: CollapsibleParams = {})
function withCollapsibleForTab (MaterialTapNavigator, collapsibleParams: CollapsibleParams = {})
function withCollapsibleForTabChild (WrappedScreen)

function setExpoStatusBarHeight (height) // expo only
function setSafeBounceHeight (height)

Given props

render () {
  const {
    paddingHeight,
    translateY, // 0 ~ collapsibleHeaderHeight
    translateOpacity, // 1.0 ~ 0.0
    translateProgress, // 0.0 ~ 1.0
    animatedY,
    onScroll, 
  } = this.props.collapsible;

  ...
}

Limitation

When scroll slowly, the layout is flickering on Android.

This is react-native's regression bug on Android. Here is a workaround. facebook/react-native#15445 (comment)

With State persistence #40

react-navigation provides State persistence as experimental feature. Unfortunately, collapsible header stops collapsible when you use it.

With SectionList #37

ToDo

• iOS 11 Style Header
• Hiding bottom tab

Contribution

• PR is welcome. Please create issue or PR with a sample react-navigation code or Expo Snack.
• If you've got good example using this module, please update /example.

Dependencies Version of Example

• react-native: 0.57.8, latest:
• react-navigation: 3.0.9, latest:

I've ensured this module is compatible with react-native >=0.56 and react-navigation >=2.11.2. But it does not mean it's not compatible with older versions.