滚动自动隐藏导航时的ReactNative

多亏了@Vincent，我才能在react native ..中制作与AMScrollingnavbar类似的简单代码。

import React, { Component } from 'react';
import { Text, View, ScrollView, Animated } from 'react-native';
import NavigationBar from 'react-native-navbar';

const AnimatedNavigationBar = Animated.createAnimatedComponent(NavigationBar);

export default class BasicListView extends Component {

  state = { isNavBarHidden: false, height: new Animated.Value(64) };

  setAnimation(disable) {
    Animated.timing(this.state.height, {
      duration: 100,
      toValue: disable ? 0 : 64
    }).start()
  };

   handleScroll(event) {
      this.setAnimation((event.nativeEvent.contentOffset.y > 64));
      this.setState({ isNavBarHidden: !this.state.isNavBarHidden });
  }

  render() {
    return (
      <View style={{ flex: 1 }} >
        <AnimatedNavigationBar style={{ backgroundColor: 'red', height: this.state.height }} />
        <ScrollView scrollEventThrottle={16} onScroll={this.handleScroll.bind(this)}>
          <View style={{ height: 200 }}><Text>Test</Text></View>
          <View style={{ height: 200 }}><Text>Test</Text></View>
          <View style={{ height: 200 }}><Text>Test</Text></View>
          <View style={{ height: 200 }}><Text>Test</Text></View>
          <View style={{ height: 200 }}><Text>Test</Text></View>
        </ScrollView>
      </View>
    );
  }
}