ReactNative 上的SectionList 粘性标头

Question

我需要创建一个屏幕目录（类别和产品）。我正在使用 React Native 中的SectionList 来实现这一目标。

当您滚动产品列表时，我需要使“类别”组件粘在顶部。有没有任何图书馆可以帮助我使用此目录屏幕？ 请看这里的图片..

import React from "react";
import { View, StyleSheet, SectionList } from "react-native";

import Text from "../Text";

const DATA = [
  {
    title: "Main dishes",
    data: ["Pizza", "Burger", "Risotto"],
  },
  {
    title: "Sides",
    data: ["French Fries", "Onion Rings", "Fried Shrimps"],
  },
  {
    title: "Drinks",
    data: ["Water", "Coke", "Beer"],
  },
  {
    title: "Desserts",
    data: ["Cheese Cake", "Ice Cream"],
  },
];

const TabCategories = () => (
  <View>
    <Text>Horizontal list of categories</Text>
  </View>
);

const Item = ({ title }) => (
  <View style={styles.item}>
    <Text style={styles.title}>{title}</Text>
  </View>
);

const TestSectionList = (props) => {
  return (
    <View style={styles.container}>
      <Text style={styles.SRC}>Some React Component</Text>
      <SectionList
        sections={DATA}
        keyExtractor={(item, index) => item + index}
        renderItem={({ item }) => <Item title={item} />}
        renderSectionHeader={({ section: { title } }) => (
          <Text style={styles.header}>{title}</Text>
        )}
        StickyHeaderComponent={TabCategories}
      />
    </View>
  );
};

const styles = StyleSheet.create({
  container: {},
  SRC: {
    fontWeight: "bold",
    borderWidth: 1,
    borderColor: "#fff",
    padding: 10,
  },
  item: {
    padding: 30,
  },
  header: {
    fontWeight: "bold",
    fontSize: 20,
  },
});

export default TestSectionList;

Answer 1

stickySectionHeadersEnabled 使节标题粘在屏幕顶部，直到下一个节标题将其向上推

ListHeaderComponent 在列表的最开头呈现

renderSectionHeader 呈现在每个 SECTION 的顶部

我认为这应该做：

<SectionList
      sections={DATA}
      keyExtractor={(item, index) => item + index}
      renderItem={({ item }) => <Item title={item} />}
      ListHeaderComponent={({ section: { title } }) => (
        <Text style={styles.header}>{title}</Text>
      )}
      renderSectionHeader={TabCategories}
      stickySectionHeadersEnabled
   />