十八、ScrollView嵌套FlatList滚动处理

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借鉴该地址： https://stackoverflow.com/questions/51098599/flatlist-inside-scrollview-doesnt-scroll
代码如下：

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import { Component, default as React } from 'react';
import { View, FlatList, ScrollView, Text } from 'react-native';

export default class LabScreen extends Component<{}> {
  constructor(props) {
    super(props);
    this.state = {enableScrollViewScroll: true};
  }

  render() {
    return (
      <View
      onStartShouldSetResponderCapture={() => {
          this.setState({ enableScrollViewScroll: true });
      }}>
      <ScrollView
      scrollEnabled={this.state.enableScrollViewScroll}
      ref={myScroll => (this._myScroll = myScroll)}>
        {this.renderFlatList('red')}
        {this.renderFlatList('green')}
        {this.renderFlatList('purple')}
        {this.renderFlatList('pink')}
      </ScrollView>
      </View>
    );
  }

  getRandomData = () => {
    return new Array(100).fill('').map((item, index) => {
      return { title: 'Title ' + (index + 1) };
    });
  };

  renderFlatList(color: string) {
    return (
      <View
        onStartShouldSetResponderCapture={() => {
          this.setState({ enableScrollViewScroll: false });
          if (this._myScroll.contentOffset === 0
            && this.state.enableScrollViewScroll === false) {
            this.setState({ enableScrollViewScroll: true });
          }
        }}>
      <FlatList
        data={this.getRandomData()}
        backgroundColor={color}
        maxHeight={200}
        marginBottom={50}
        keyExtractor={(item, index) => index.toString()}
        renderItem={({ item }) => <Text>{item.title}</Text>}
      />
      </View>
    );
  }
}