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

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

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

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

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

    return (
      <AnimatedFlatList 
        ...
        contentContainerStyle={{paddingTop: paddingHeight}}
        scrollIndicatorInsets={{top: paddingHeight}}
        _mustAddThis={scrollY}
        onScroll={onScroll} 
        
        // if you want to use 'onScroll' callback.
        // onScroll={Animated.event(
        //   [{nativeEvent: {contentOffset: {y: scrollY}}}],
        //   {useNativeDriver:true, listener:this.onScroll})} 
        />
    )
  }
}

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

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

import { collapsibleOptionsForTab, collapsibleTabConfig } from 'react-navigation-collapsible';

const TopTabNavigator = createMaterialTopTabNavigator(
  {
    Screen1: { screen: MyScreen },
    Screen2: { screen: OtherScreen },
  },
  collapsibleTabConfig({
    navigationOptions:{
      tabBarOptions: {
        indicatorStyle: { backgroundColor: 'white' },
        style: { backgroundColor: 'green' },
      }
    }
  })
);

const routeConfig = {
  MainScreen: { screen: MainScreen },
  TopTabScreen: { screen: TopTabNavigator, navigationOptions: props => collapsibleOptionsForTab(props, {title: 'Material Tab'}) },
};

const StackNavigator = createStackNavigator(routeConfig);