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react-native-drag-sort-list

v1.0.4

Published

A powerful React Native drag and sort component library with support for single and multi-column layouts

Readme

1

react-native-drag-sort

一个功能强大的 React Native 拖拽排序组件库,支持单列和多列布局,提供流畅的拖拽体验和自动滚动功能。

功能特性

  • 长按拖拽:长按 500ms 后开始拖拽,提供视觉反馈(缩放效果)
  • 单列/多列布局:支持自定义列数,灵活布局
  • 自动滚动:拖拽到边缘时自动触发外层 ScrollView 滚动
  • 流畅动画:使用 Animated API 实现平滑的位置切换动画
  • ScrollView 联动:支持与外层 ScrollView 无缝集成
  • 自定义间距:支持设置行间距和列间距
  • 性能优化:使用 memo 和 lodash 进行性能优化

安装

安装包

npm install react-native-drag-sort-list
# 或
yarn add react-native-drag-sort-list

前置依赖

本组件依赖 react-native-gesture-handlerlodash,这些依赖会自动安装。如果遇到问题,可以手动安装:

npm install react-native-gesture-handler lodash
# 或
yarn add react-native-gesture-handler lodash

iOS 安装

cd ios && pod install && cd ..

使用方法

基础用法(单列)

import React from 'react';
import { Dimensions, View, Text } from 'react-native';
import DragSortView from 'react-native-drag-sort-list';

const windowWidth = Dimensions.get('window').width;

const MyComponent = () => {
  const [data, setData] = React.useState(['1', '2', '3', '4', '5']);

  const renderItem = (item, index) => {
    return (
      <View style={{
        width: windowWidth,
        height: 50,
        backgroundColor: 'red',
        justifyContent: 'center',
        alignItems: 'center'
      }}>
        <Text>{item}</Text>
      </View>
    );
  };

  return (
    <DragSortView
      column={1}
      childrenWidth={windowWidth}
      childrenHeight={50}
      renderItem={renderItem}
      rowSpace={10}
      dataSource={data}
      onDragEnd={(from, to, newData) => {
        console.log('从位置', from, '移动到位置', to);
        setData(newData);
      }}
    />
  );
};

多列布局

import React from 'react';
import { Dimensions, View, Text } from 'react-native';
import DragSortView from 'react-native-drag-sort-list';

const windowWidth = Dimensions.get('window').width;

const MyComponent = () => {
  const [data, setData] = React.useState(['1', '2', '3', '4', '5', '6']);

  const renderItem = (item, index) => {
    return (
      <View style={{
        width: (windowWidth - 10) / 2,
        height: 50,
        backgroundColor: 'blue',
        justifyContent: 'center',
        alignItems: 'center'
      }}>
        <Text>{item}</Text>
      </View>
    );
  };

  return (
    <DragSortView
      column={2}
      childrenWidth={(windowWidth - 10) / 2}
      childrenHeight={50}
      renderItem={renderItem}
      rowSpace={10}
      columnSpace={10}
      dataSource={data}
      onDragEnd={(from, to, newData) => {
        setData(newData);
      }}
    />
  );
};

与 ScrollView 集成

在 ScrollView 中使用时,需要提供三个 ref 来支持自动滚动功能。你可以在同一个 ScrollView 中放置多个 DragSortView:

import React, { useRef } from 'react';
import { Dimensions, ScrollView, Text, View } from 'react-native';
import DragSortView from 'react-native-drag-sort-list';

const windowWidth = Dimensions.get('window').width;

const MyComponent = () => {
  const scrollViewRef = useRef(null); // 最外层 scrollView
  const scrollYRef = useRef(0); // 已经滚动的距离
  const scrollViewHeightRef = useRef(0); // 页面展示视图大小

  const renderOneItem = (item, index) => {
    return (
      <View style={{
        width: windowWidth,
        height: 50,
        backgroundColor: 'red',
        justifyContent: 'center',
        alignItems: 'center'
      }}>
        <Text>{item}</Text>
      </View>
    );
  };

  const renderTwoItem = (item, index) => {
    return (
      <View style={{
        width: (windowWidth - 10) / 2,
        height: 50,
        backgroundColor: 'blue',
        justifyContent: 'center',
        alignItems: 'center'
      }}>
        <Text>{item}</Text>
      </View>
    );
  };

  return (
    <View
      onLayout={(e) => {
        scrollViewHeightRef.current = e.nativeEvent.layout.height;
      }}
    >
      <ScrollView
        bounces={false}
        scrollEventThrottle={16}
        ref={scrollViewRef}
        onScroll={(e) => {
          scrollYRef.current = e.nativeEvent.contentOffset.y;
        }}
      >
        {/* 单列拖拽列表 */}
        <DragSortView
          scrollYRef={scrollYRef}
          scrollViewRef={scrollViewRef}
          scrollViewHeightRef={scrollViewHeightRef}
          column={1}
          childrenWidth={windowWidth}
          childrenHeight={50}
          renderItem={renderOneItem}
          rowSpace={10}
          dataSource={['1', '2', '3', '4', '5', '6', '7', '8', '9', '10']}
        />
        
        {/* 多列拖拽列表 */}
        <DragSortView
          scrollYRef={scrollYRef}
          scrollViewRef={scrollViewRef}
          scrollViewHeightRef={scrollViewHeightRef}
          column={2}
          childrenWidth={(windowWidth - 10) / 2}
          childrenHeight={50}
          renderItem={renderTwoItem}
          rowSpace={10}
          columnSpace={10}
          dataSource={['1', '2', '3', '4', '5', '6', '7', '8', '9', '10']}
        />
      </ScrollView>
    </View>
  );
};

API 文档

DragSortView Props

| 属性名 | 类型 | 必填 | 默认值 | 说明 | |--------|------|------|--------|------| | dataSource | Array | ✅ | - | 数据源数组 | | renderItem | Function(item, index) | ✅ | - | 渲染每个列表项的函数 | | childrenWidth | Number | ✅ | - | 子元素宽度 | | childrenHeight | Number | ✅ | - | 子元素高度 | | column | Number | ❌ | 1 | 列数 | | rowSpace | Number | ❌ | 0 | 行间距 | | columnSpace | Number | ❌ | 0 | 列间距 | | keyStr | String | ❌ | - | 作为列表 key 的关键字(用于优化渲染) | | onDragStart | Function() | ❌ | - | 拖拽开始回调 | | onDragEnd | Function(from, to, newData) | ❌ | - | 拖拽结束回调,参数:原始索引、新索引、新数据数组 | | parentYRef | Ref<Number> | ❌ | - | 如果当前拖拽视图在一个容器中,则需要这个容器在 scrollView 的 y 位置 | | scrollYRef | Ref<Number> | ❌ | - | 外层 ScrollView 滚动距离的 ref | | scrollViewRef | Ref<ScrollView> | ❌ | - | 外层 ScrollView 的 ref | | scrollViewHeightRef | Ref<Number> | ❌ | - | 外层 ScrollView 视图高度的 ref | | triggerTop | Number | ❌ | 200 | 距离页面顶部多少距离触发自动向上滚动 | | triggerBottom | Number | ❌ | 屏幕高度 - 200 | 距离页面顶部多少距离触发自动向下滚动 |

onDragEnd 回调参数

  • from (Number): 拖拽元素的原始索引位置
  • to (Number): 拖拽元素的新索引位置
  • newData (Array): 重新排序后的新数据数组

注意事项

  1. 手势库依赖:确保已正确安装和配置 react-native-gesture-handler,并在应用入口处导入:

    import 'react-native-gesture-handler';
  2. ScrollView 集成:如果需要在 ScrollView 中使用,必须提供 scrollYRefscrollViewRefscrollViewHeightRef 三个 ref,否则自动滚动功能将无法正常工作。

  3. 性能优化:组件内部使用 memo 进行优化,但建议为 dataSource 中的每个对象提供唯一的 keyStr 属性以进一步提升性能。

  4. 平台差异

    • iOS 和 Android 的滚动速度和距离有细微差异(iOS: 10ms/2px, Android: 20ms/5px)
    • 可通过修改 DragSortView.js 中的 TIMEDISTANCE 常量进行调整
  5. 长按时间:默认长按 500ms 后开始拖拽,可通过修改 DragItemContainer.js 中的 minDurationactivateAfterLongPress 进行调整。

示例项目

项目包含两个测试文件,展示了不同的使用场景:

  • TestDragSort.js:基础单列拖拽示例
  • TestMoreDragSort.js:ScrollView 集成和多列布局示例

许可证

ISC

作者

liushun