在 React Native 中开发鸿蒙（HarmonyOS）组件，尤其是像折叠面板（Collapse）这样的组件，通常需要借助一些第三方库或者自己手动实现。鸿蒙操作系统是基于 harmony 的，但它在某些方面有自己的特性和API。由于 React Native 主要针对 harmony 和 harmony，直接使用原生鸿蒙 API 可能不太直接，但我们可以通过一些方法来实现类似的功能。

方法1：使用第三方库

有一些第三方库可以帮助你在 React Native 项目中实现类似原生鸿蒙组件的功能。例如，可以使用 react-native-collapsible 或 react-native-animated-collapse 等库来实现折叠面板效果。

安装 react-native-collapsible

  1. 安装库：

    npm install react-native-collapsible --save

  2. 在你的组件中使用：

    import Collapsible from 'react-native-collapsible';
import { TouchableOpacity, Text, View } from 'react-native';

class MyComponent extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      collapsed: true,
    };
  }

  _renderContent() {
    return (
      <View>
        <Text>这里是折叠内容</Text>
      </View>
    );
  }

  _renderHeader() {
    return (
      <TouchableOpacity onPress={() => this.setState({ collapsed: !this.state.collapsed })}>
        <Text>点击折叠</Text>
      </TouchableOpacity>
    );
  }

  render() {
    return (
      <Collapsible collapsed={this.state.collapsed}>
        {this._renderHeader()}
        {this._renderContent()}
      </Collapsible>
    );
  }
}

方法2：手动实现折叠面板效果

如果你想要更深入地控制折叠面板的动画或其他特性，你可以手动实现一个折叠面板。这通常涉及到使用 Animated API 来创建动画效果。

示例代码：

import React, { useState } from 'react';
import { View, Text, TouchableOpacity, Animated, Easing } from 'react-native';

const CustomCollapse = () => {
  const [height, setHeight] = useState(new Animated.Value(0)); // 初始高度为0
  const [collapsed, setCollapsed] = useState(true); // 初始状态为折叠

  const toggleCollapse = () => {
    const toValue = collapsed ? 0 : 200; // 设定高度，例如200px的高度展开区域
    Animated.timing(height, {
      toValue,
      duration: 300, // 动画持续时间300毫秒
      easing: Easing.linear, // 动画效果线性变化
      useNativeDriver: false, // 如果不使用原生驱动，则需要将此选项设置为false（在某些harmony版本上可能存在问题）
    }).start(() => setCollapsed(!collapsed)); // 动画完成后切换折叠状态
  };

  return (
    <View>
      <TouchableOpacity onPress={toggleCollapse}>
        <Text>点击折叠/展开</Text>
      </TouchableOpacity>
      <Animated.View style={{ height: height }}>
        <Text>这里是折叠内容</Text>
      </Animated.View>
    </View>
  );
};

在这个例子中，Animated.timing 用于创建平滑的折叠和展开动画。你可以根据需要调整 toValue 和动画的参数。这种方法提供了更高的灵活性，允许你自定义动画和交互。

结论：
由于 React Native 主要针对 harmony 和 harmony，对于鸿蒙（HarmonyOS）的特殊支持可能需要额外的适配工作或使用专门的库。上述方法可以帮助你在 React Native 项目中实现类似折叠面板的功能。如果需要更深入地集成鸿蒙特有的功能，考虑查看鸿蒙的官方文档和API，或者在必要时使用原生模块进行更深层次的集成。

组件真实项目组件案例演示代码：

// App.tsx
import React, { useState } from 'react';
import { 
  View, 
  Text, 
  StyleSheet, 
  TouchableOpacity, 
  ScrollView, 
  SafeAreaView,
  Image,
  Dimensions,
  Animated,
  Easing
} from 'react-native';

// Base64 Icons for collapse panels
const PANEL_ICONS = {
  dashboard: 'data:image/png;base64,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......',
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  users: 'data:image/png;base64,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......',
  notifications: 'data:image/png;base64,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......'
};

// 折叠面板组件
interface CollapsePanelProps {
  title: string;
  icon: string;
  children: React.ReactNode;
  initiallyOpen?: boolean;
}

const CollapsePanel: React.FC<CollapsePanelProps> = ({
  title,
  icon,
  children,
  initiallyOpen = false
}) => {
  const [isOpen, setIsOpen] = useState(initiallyOpen);
  const [height] = useState(new Animated.Value(initiallyOpen ? 1 : 0));

  const togglePanel = () => {
    const toValue = isOpen ? 0 : 1;
    
    Animated.timing(height, {
      toValue,
      duration: 300,
      easing: Easing.linear,
      useNativeDriver: false
    }).start();
    
    setIsOpen(!isOpen);
  };

  return (
    <View style={styles.panelContainer}>
      <TouchableOpacity 
        style={styles.panelHeader} 
        onPress={togglePanel}
        activeOpacity={0.8}
      >
        <View style={styles.panelHeaderContent}>
          <Image source={{ uri: icon }} style={styles.panelIcon} />
          <Text style={styles.panelTitle}>{title}</Text>
        </View>
        <Animated.View 
          style={[
            styles.arrowIcon,
            {
              transform: [{
                rotate: height.interpolate({
                  inputRange: [0, 1],
                  outputRange: ['0deg', '180deg']
                })
              }]
            }
          ]}
        >
          <Text style={styles.arrowText}>▼</Text>
        </Animated.View>
      </TouchableOpacity>
      
      <Animated.View 
        style={[
          styles.panelContent,
          {
            height: height.interpolate({
              inputRange: [0, 1],
              outputRange: [0, 200]
            }),
          }
        ]}
      >
        <View style={styles.panelBody}>
          {children}
        </View>
      </Animated.View>
    </View>
  );
};

// 主应用组件
const App = () => {
  return (
    <SafeAreaView style={styles.container}>
      <View style={styles.header}>
        <Text style={styles.headerTitle}>管理系统</Text>
        <Text style={styles.headerSubtitle}>折叠面板组件演示</Text>
      </View>
      
      <ScrollView contentContainerStyle={styles.contentContainer}>
        <CollapsePanel 
          title="仪表盘概览" 
          icon={PANEL_ICONS.dashboard}
          initiallyOpen={true}
        >
          <View style={styles.panelItem}>
            <Text style={styles.panelItemTitle}>今日访问量</Text>
            <Text style={styles.panelItemValue}>1,248</Text>
          </View>
          <View style={styles.panelItem}>
            <Text style={styles.panelItemTitle}>新增用户</Text>
            <Text style={styles.panelItemValue}>+142</Text>
          </View>
          <View style={styles.panelItem}>
            <Text style={styles.panelItemTitle}>转化率</Text>
            <Text style={styles.panelItemValue}>4.8%</Text>
          </View>
        </CollapsePanel>

        <CollapsePanel 
          title="数据分析" 
          icon={PANEL_ICONS.analytics}
        >
          <View style={styles.chartPlaceholder}>
            <Text style={styles.chartText}>图表数据展示区域</Text>
          </View>
          <View style={styles.panelItem}>
            <Text style={styles.panelItemTitle}>总销售额</Text>
            <Text style={styles.panelItemValue}>¥245,680</Text>
          </View>
          <View style={styles.panelItem}>
            <Text style={styles.panelItemTitle}>订单数量</Text>
            <Text style={styles.panelItemValue}>1,842</Text>
          </View>
        </CollapsePanel>

        <CollapsePanel 
          title="用户管理" 
          icon={PANEL_ICONS.users}
        >
          <View style={styles.userList}>
            <View style={styles.userItem}>
              <Text style={styles.userName}>张三</Text>
              <Text style={styles.userRole}>管理员</Text>
            </View>
            <View style={styles.userItem}>
              <Text style={styles.userName}>李四</Text>
              <Text style={styles.userRole}>编辑者</Text>
            </View>
            <View style={styles.userItem}>
              <Text style={styles.userName}>王五</Text>
              <Text style={styles.userRole}>访客</Text>
            </View>
          </View>
        </CollapsePanel>

        <CollapsePanel 
          title="系统设置" 
          icon={PANEL_ICONS.settings}
        >
          <View style={styles.settingItem}>
            <Text style={styles.settingLabel}>通知提醒</Text>
            <Text style={styles.settingValue}>开启</Text>
          </View>
          <View style={styles.settingItem}>
            <Text style={styles.settingLabel}>自动更新</Text>
            <Text style={styles.settingValue}>关闭</Text>
          </View>
          <View style={styles.settingItem}>
            <Text style={styles.settingLabel}>语言设置</Text>
            <Text style={styles.settingValue}>中文</Text>
          </View>
        </CollapsePanel>

        <CollapsePanel 
          title="消息通知" 
          icon={PANEL_ICONS.notifications}
        >
          <View style={styles.notificationItem}>
            <Text style={styles.notificationTitle}>系统更新</Text>
            <Text style={styles.notificationContent}>新版本已发布，请及时更新</Text>
            <Text style={styles.notificationTime}>2小时前</Text>
          </View>
          <View style={styles.notificationItem}>
            <Text style={styles.notificationTitle}>安全提醒</Text>
            <Text style={styles.notificationContent}>检测到异常登录行为</Text>
            <Text style={styles.notificationTime}> yesterday</Text>
          </View>
        </CollapsePanel>
      </ScrollView>
      
      <View style={styles.footer}>
        <Text style={styles.footerText}>© 2023 管理系统. All rights reserved.</Text>
      </View>
    </SafeAreaView>
  );
};

const { width } = Dimensions.get('window');

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: '#f0f8ff',
  },
  header: {
    backgroundColor: '#ffffff',
    paddingTop: 20,
    paddingBottom: 25,
    paddingHorizontal: 20,
    borderBottomWidth: 1,
    borderBottomColor: '#e0e0e0',
    shadowColor: '#000',
    shadowOffset: { width: 0, height: 2 },
    shadowOpacity: 0.05,
    shadowRadius: 4,
    elevation: 2,
  },
  headerTitle: {
    fontSize: 26,
    fontWeight: '700',
    color: '#2c3e50',
    textAlign: 'center',
    marginBottom: 5,
  },
  headerSubtitle: {
    fontSize: 15,
    color: '#7f8c8d',
    textAlign: 'center',
  },
  contentContainer: {
    padding: 20,
  },
  panelContainer: {
    backgroundColor: '#ffffff',
    borderRadius: 12,
    marginBottom: 15,
    overflow: 'hidden',
    borderWidth: 1,
    borderColor: '#e0e0e0',
    shadowColor: '#000',
    shadowOffset: { width: 0, height: 2 },
    shadowOpacity: 0.05,
    shadowRadius: 4,
    elevation: 2,
  },
  panelHeader: {
    flexDirection: 'row',
    justifyContent: 'space-between',
    alignItems: 'center',
    padding: 15,
    backgroundColor: '#f8f9fa',
  },
  panelHeaderContent: {
    flexDirection: 'row',
    alignItems: 'center',
  },
  panelIcon: {
    width: 24,
    height: 24,
    marginRight: 12,
    tintColor: '#3498db',
  },
  panelTitle: {
    fontSize: 18,
    fontWeight: '600',
    color: '#2c3e50',
  },
  arrowIcon: {
    transition: 'transform 0.3s ease',
  },
  arrowText: {
    fontSize: 16,
    color: '#7f8c8d',
  },
  panelContent: {
    overflow: 'hidden',
    backgroundColor: '#ffffff',
  },
  panelBody: {
    padding: 15,
  },
  panelItem: {
    flexDirection: 'row',
    justifyContent: 'space-between',
    paddingVertical: 10,
    borderBottomWidth: 1,
    borderBottomColor: '#f0f0f0',
  },
  panelItemTitle: {
    fontSize: 16,
    color: '#7f8c8d',
  },
  panelItemValue: {
    fontSize: 16,
    fontWeight: '600',
    color: '#2c3e50',
  },
  chartPlaceholder: {
    height: 120,
    backgroundColor: '#f8f9fa',
    borderRadius: 8,
    justifyContent: 'center',
    alignItems: 'center',
    marginBottom: 15,
  },
  chartText: {
    fontSize: 16,
    color: '#7f8c8d',
  },
  userList: {
    marginTop: 5,
  },
  userItem: {
    flexDirection: 'row',
    justifyContent: 'space-between',
    paddingVertical: 12,
    borderBottomWidth: 1,
    borderBottomColor: '#f0f0f0',
  },
  userName: {
    fontSize: 16,
    color: '#2c3e50',
  },
  userRole: {
    fontSize: 14,
    color: '#3498db',
    fontWeight: '500',
  },
  settingItem: {
    flexDirection: 'row',
    justifyContent: 'space-between',
    paddingVertical: 12,
    borderBottomWidth: 1,
    borderBottomColor: '#f0f0f0',
  },
  settingLabel: {
    fontSize: 16,
    color: '#7f8c8d',
  },
  settingValue: {
    fontSize: 16,
    color: '#2c3e50',
    fontWeight: '500',
  },
  notificationItem: {
    paddingVertical: 12,
    borderBottomWidth: 1,
    borderBottomColor: '#f0f0f0',
  },
  notificationTitle: {
    fontSize: 16,
    fontWeight: '600',
    color: '#2c3e50',
    marginBottom: 5,
  },
  notificationContent: {
    fontSize: 14,
    color: '#7f8c8d',
    marginBottom: 5,
  },
  notificationTime: {
    fontSize: 12,
    color: '#95a5a6',
  },
  footer: {
    paddingVertical: 15,
    alignItems: 'center',
    borderTopWidth: 1,
    borderTopColor: '#e0e0e0',
    backgroundColor: '#ffffff',
  },
  footerText: {
    fontSize: 14,
    color: '#7f8c8d',
    fontWeight: '500',
  },
});

export default App;

这段React Native代码实现了一个折叠面板组件，通过动画系统实现平滑的展开收起效果。组件通过状态管理控制面板的展开状态，利用Animated API驱动两个关键动画：箭头图标的旋转动画和内容区域的高度变化动画。点击面板头部时触发togglePanel函数，该函数通过Animated.timing在300毫秒内将动画值从0过渡到1或反向过渡，实现视觉上的展开收起效果。

在鸿蒙系统适配方面，这段代码面临几个重要的架构差异。React Native的动画系统依赖于JavaScript线程计算动画值，然后通过桥接层传递给原生组件进行渲染，这种架构在鸿蒙上会产生显著的性能损耗。鸿蒙的ArkUI框架采用声明式动画范式，动画计算和渲染都在Native层完成，能够提供更流畅的用户体验。

手势处理机制方面，React Native通过PanResponder系统在JavaScript层处理触摸事件，而鸿蒙的手势识别直接在Native层处理，这导致事件传递路径完全不同。在鸿蒙上实现类似交互需要使用ArkTS的Gesture组件，直接绑定手势事件到UI组件上。

外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传

组件生命周期管理也存在显著差异。React Native使用Hooks管理组件状态和副作用，而鸿蒙通过装饰器如@State、@Prop来管理组件状态，状态变更直接触发UI更新，没有虚拟DOM比对过程。

布局系统的映射关系复杂，React Native的Flexbox布局与鸿蒙的Flex布局虽然概念相似，但在具体属性和默认值上存在差异。特别是当涉及到嵌套布局和绝对定位时，两种系统的表现可能不一致。

动画值的插值计算方式不同，React Native的interpolate方法在JS端执行，而鸿蒙的动画插值在Native端处理，这影响了动画的精确性和性能表现。

状态同步机制方面，React Native的setState触发重新渲染，而鸿蒙的状态变更通过响应式系统直接更新相关UI组件，这种差异影响了组件的更新效率。

打包

接下来通过打包命令npn run harmony将reactNative的代码打包成为bundle，这样可以进行在开源鸿蒙OpenHarmony中进行使用。

在这里插入图片描述

打包之后再将打包后的鸿蒙OpenHarmony文件拷贝到鸿蒙的DevEco-Studio工程目录去：

在这里插入图片描述

最后运行效果图如下显示：

欢迎大家加入开源鸿蒙跨平台开发者社区，一起共建开源鸿蒙跨平台生态。

# react native # harmonyos # react.js # javascript # ecmascript # 开发语言 # 算法
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