在React Native中开发宫格（Grid）组件，有多种方法可以实现。以下是一些常见的方法和步骤：

方法1：使用第三方库

React Native社区有很多第三方库可以帮助你快速实现宫格布局，例如 react-native-grid-component 或 react-native-grid-view。

安装第三方库

例如，使用 react-native-grid-view：

npm install react-native-grid-view --save

使用第三方库

import { GridView } from 'react-native-grid-view';

const App = () => {
  return (
    <GridView
      style={{ flex: 1 }}
      contentContainerStyle={{ justifyContent: 'center' }}
      itemDimension={{ width: 100, height: 100 }}
      items={5} // 宫格中的项数
      renderItem={({ item }) => (
        <View style={{ backgroundColor: 'blue', justifyContent: 'center', alignItems: 'center' }}>
          <Text>{item}</Text>
        </View>
      )}
    />
  );
};

方法2：使用 Flexbox 和 FlatList

如果你想要更灵活的控制或者不希望引入额外的库，可以使用 FlatList 和一些基本的Flexbox布局。

使用 FlatList 和 Flexbox

import React from 'react';
import { View, Text, FlatList, StyleSheet } from 'react-native';

const data = Array.from({ length: 9 }, (_, index) => index + 1); // 假设我们有9个项目

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

const App = () => {
  return (
    <FlatList
      data={data}
      numColumns={3} // 三列宫格布局
      keyExtractor={item => item.toString()}
      renderItem={({ item }) => <GridItem item={item} />}
    />
  );
};

const styles = StyleSheet.create({
  gridItem: {
    backgroundColor: 'f0f0f0',
    margin: 5,
    justifyContent: 'center',
    alignItems: 'center',
    height: 100, // 根据需要调整高度和宽度以匹配宫格大小
  },
});

方法3：使用 Masonry List（瀑布流布局）

如果你的宫格布局类似于瀑布流，可以使用 react-native-masonry。

安装 Masonry List 库

npm install react-native-masonry --save

使用 Masonry List 库

import React from 'react';
import { View, Text } from 'react-native';
import MasonryList from 'react-native-masonry';
import { styles } from './styles'; // 确保你已经定义了样式文件来调整宫格项的样式。

const data = Array.from({ length: 9 }, (_, index) => index + 1); // 数据源，例如图片或文本项。
const itemsPerRow = 2; // 每行的项目数，根据需要调整。
const spacing = 10; // 项目之间的间距。
const itemDimension = { width: 150, height: 150 }; // 每个宫格项的尺寸。
const keyExtractor = item => item.toString(); // 确保每个项都有一个唯一的key。
const renderItem = ({ item }) => <View style={styles.gridItem}><Text>{item}</Text></View>; // 渲染每个宫格项。
const onEndReached = () => console.log('End reached'); // 可选，滚动到底部时的回调。
const ListEmptyComponent = () => <Text>List is empty</Text>; // 可选，列表为空时的组件。
const onRefresh = () => console.log('Refreshing'); // 可选，下拉刷新的回调。
const refreshing = false; // 可选，是否正在刷新。
const canLoadMore = true; // 可选，是否可以加载更多。
const onLoadMore = () => console.log('Loading more'); // 可选，加载更多的回调。
const initialNumToRender = 5; // 可选，初始渲染的项目数。默认为10。根据需要调整。可以根据性能需求调整。例如，如果你的数据集非常大，你可以减少

React Native 实现宫格布局：

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

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};

// 标签组件
interface TagProps {
  text: string;
  closable?: boolean;
  type?: 'primary' | 'success' | 'warning' | 'danger' | 'info' | 'default';
  size?: 'small' | 'medium' | 'large';
  icon?: string;
  onClose?: () => void;
  onPress?: () => void;
}

const Tag: React.FC<TagProps> = ({
  text,
  closable = false,
  type = 'default',
  size = 'medium',
  icon,
  onClose,
  onPress
}) => {
  const getTypeStyle = () => {
    switch (type) {
      case 'primary':
        return styles.tagPrimary;
      case 'success':
        return styles.tagSuccess;
      case 'warning':
        return styles.tagWarning;
      case 'danger':
        return styles.tagDanger;
      case 'info':
        return styles.tagInfo;
      default:
        return styles.tagDefault;
    }
  };

  const getSizeStyle = () => {
    switch (size) {
      case 'small':
        return styles.tagSmall;
      case 'large':
        return styles.tagLarge;
      default:
        return styles.tagMedium;
    }
  };

  return (
    <TouchableOpacity 
      style={[styles.tag, getTypeStyle(), getSizeStyle()]}
      onPress={onPress}
    >
      {icon && (
        <Image source={{ uri: icon }} style={styles.tagIcon} />
      )}
      <Text style={[styles.tagText, getTypeStyle().text]} numberOfLines={1}>
        {text}
      </Text>
      {closable && (
        <TouchableOpacity 
          style={styles.closeButton}
          onPress={(e) => {
            e.stopPropagation();
            onClose && onClose();
          }}
        >
          <Image source={{ uri: TAG_ICONS.close }} style={styles.closeIcon} />
        </TouchableOpacity>
      )}
    </TouchableOpacity>
  );
};

// 标签输入组件
interface TagInputProps {
  tags: string[];
  onTagsChange: (tags: string[]) => void;
  placeholder?: string;
}

const TagInput: React.FC<TagInputProps> = ({
  tags,
  onTagsChange,
  placeholder = '添加标签...'
}) => {
  const [inputText, setInputText] = useState('');

  const addTag = () => {
    if (inputText.trim() && !tags.includes(inputText.trim())) {
      onTagsChange([...tags, inputText.trim()]);
      setInputText('');
    }
  };

  const removeTag = (index: number) => {
    const newTags = [...tags];
    newTags.splice(index, 1);
    onTagsChange(newTags);
  };

  return (
    <View style={styles.tagInputContainer}>
      <View style={styles.tagsContainer}>
        {tags.map((tag, index) => (
          <Tag
            key={index}
            text={tag}
            closable
            type="info"
            size="small"
            onClose={() => removeTag(index)}
          />
        ))}
      </View>
      
      <View style={styles.inputContainer}>
        <TextInput
          style={styles.tagInput}
          value={inputText}
          onChangeText={setInputText}
          placeholder={placeholder}
          placeholderTextColor="#94a3b8"
          onSubmitEditing={addTag}
        />
        <TouchableOpacity style={styles.addButton} onPress={addTag}>
          <Image source={{ uri: TAG_ICONS.add }} style={styles.addIcon} />
        </TouchableOpacity>
      </View>
    </View>
  );
};

// 主应用组件
const App = () => {
  const [tags, setTags] = useState<string[]>(['React', 'TypeScript', 'React Native']);
  const [selectedTags, setSelectedTags] = useState<string[]>([]);

  const allTags = [
    'JavaScript', 'Python', 'Java', 'C++', 'Swift', 
    'Kotlin', 'Go', 'Rust', 'PHP', 'Ruby',
    'HTML', 'CSS', 'Sass', 'Less', 'Bootstrap',
    'Vue.js', 'Angular', 'Node.js', 'Express', 'Django',
    'MongoDB', 'PostgreSQL', 'MySQL', 'Redis', 'Firebase',
    'Docker', 'Kubernetes', 'AWS', 'Azure', 'GCP'
  ];

  const toggleTagSelection = (tag: string) => {
    if (selectedTags.includes(tag)) {
      setSelectedTags(selectedTags.filter(t => t !== tag));
    } else {
      setSelectedTags([...selectedTags, tag]);
    }
  };

  const clearAllTags = () => {
    setSelectedTags([]);
  };

  return (
    <SafeAreaView style={styles.container}>
      <View style={styles.header}>
        <Text style={styles.headerTitle}>标签组件演示</Text>
        <Text style={styles.headerSubtitle}>现代化标签管理系统</Text>
      </View>
      
      <ScrollView contentContainerStyle={styles.contentContainer}>
        <View style={styles.section}>
          <Text style={styles.sectionTitle}>基础标签</Text>
          <View style={styles.tagsRow}>
            <Tag text="默认标签" type="default" />
            <Tag text="主要标签" type="primary" />
            <Tag text="成功标签" type="success" />
            <Tag text="警告标签" type="warning" />
            <Tag text="危险标签" type="danger" />
            <Tag text="信息标签" type="info" />
          </View>
        </View>
        
        <View style={styles.section}>
          <Text style={styles.sectionTitle}>不同尺寸</Text>
          <View style={styles.tagsRow}>
            <Tag text="小型标签" size="small" type="primary" />
            <Tag text="中型标签" size="medium" type="primary" />
            <Tag text="大型标签" size="large" type="primary" />
          </View>
        </View>
        
        <View style={styles.section}>
          <Text style={styles.sectionTitle}>带图标标签</Text>
          <View style={styles.tagsRow}>
            <Tag text="添加" icon={TAG_ICONS.add} type="success" />
            <Tag text="编辑" icon={TAG_ICONS.edit} type="warning" />
            <Tag text="删除" icon={TAG_ICONS.close} type="danger" />
            <Tag text="搜索" icon={TAG_ICONS.search} type="info" />
          </View>
        </View>
        
        <View style={styles.section}>
          <Text style={styles.sectionTitle}>可关闭标签</Text>
          <View style={styles.tagsRow}>
            <Tag text="可关闭1" closable type="primary" onClose={() => Alert.alert('提示', '已关闭标签1')} />
            <Tag text="可关闭2" closable type="success" onClose={() => Alert.alert('提示', '已关闭标签2')} />
            <Tag text="可关闭3" closable type="warning" onClose={() => Alert.alert('提示', '已关闭标签3')} />
          </View>
        </View>
        
        <View style={styles.section}>
          <Text style={styles.sectionTitle}>标签输入</Text>
          <TagInput 
            tags={tags} 
            onTagsChange={setTags} 
            placeholder="输入新标签并回车添加" 
          />
          <View style={styles.tagsPreview}>
            <Text style={styles.previewTitle}>当前标签:</Text>
            <View style={styles.tagsRow}>
              {tags.map((tag, index) => (
                <Tag 
                  key={index} 
                  text={tag} 
                  closable 
                  type="info" 
                  size="small"
                  onClose={() => {
                    const newTags = [...tags];
                    newTags.splice(index, 1);
                    setTags(newTags);
                  }}
                />
              ))}
            </View>
          </View>
        </View>
        
        <View style={styles.section}>
          <Text style={styles.sectionTitle}>标签选择器</Text>
          <View style={styles.selectorHeader}>
            <Text style={styles.selectedCount}>已选择 {selectedTags.length} 个标签</Text>
            {selectedTags.length > 0 && (
              <TouchableOpacity onPress={clearAllTags}>
                <Text style={styles.clearButton}>清除全部</Text>
              </TouchableOpacity>
            )}
          </View>
          <View style={styles.tagsGrid}>
            {allTags.map((tag, index) => (
              <TouchableOpacity
                key={index}
                style={[
                  styles.selectorTag,
                  selectedTags.includes(tag) && styles.selectorTagSelected
                ]}
                onPress={() => toggleTagSelection(tag)}
              >
                <Text style={[
                  styles.selectorTagText,
                  selectedTags.includes(tag) && styles.selectorTagTextSelected
                ]}>
                  {tag}
                </Text>
                {selectedTags.includes(tag) && (
                  <Image source={{ uri: TAG_ICONS.check }} style={styles.checkIcon} />
                )}
              </TouchableOpacity>
            ))}
          </View>
        </View>
        
        <View style={styles.featuresSection}>
          <Text style={styles.featuresTitle}>功能特性</Text>
          <View style={styles.featureList}>
            <View style={styles.featureItem}>
              <Text style={styles.featureBullet}>•</Text>
              <Text style={styles.featureText}>六种预设颜色主题</Text>
            </View>
            <View style={styles.featureItem}>
              <Text style={styles.featureBullet}>•</Text>
              <Text style={styles.featureText}>三种尺寸规格</Text>
            </View>
            <View style={styles.featureItem}>
              <Text style={styles.featureBullet}>•</Text>
              <Text style={styles.featureText}>支持图标和关闭按钮</Text>
            </View>
            <View style={styles.featureItem}>
              <Text style={styles.featureBullet}>•</Text>
              <Text style={styles.featureText}>标签输入和管理功能</Text>
            </View>
            <View style={styles.featureItem}>
              <Text style={styles.featureBullet}>•</Text>
              <Text style={styles.featureText}>标签选择器组件</Text>
            </View>
            <View style={styles.featureItem}>
              <Text style={styles.featureBullet}>•</Text>
              <Text style={styles.featureText}>丰富的Base64图标库</Text>
            </View>
          </View>
        </View>
        
        <View style={styles.usageSection}>
          <Text style={styles.usageTitle}>使用说明</Text>
          <Text style={styles.usageText}>
            标签组件可用于内容分类、属性标记、用户兴趣标签等场景。
            支持多种样式和交互方式，可根据业务需求灵活配置。
          </Text>
        </View>
      </ScrollView>
      
      <View style={styles.footer}>
        <Text style={styles.footerText}>© 2023 标签组件. All rights reserved.</Text>
      </View>
    </SafeAreaView>
  );
};

// 由于TextInput未导入，我们创建一个简单的替代组件
const TextInput: React.FC<any> = (props) => {
  return (
    <View style={styles.textInputContainer}>
      <Text style={styles.textInputPlaceholder}>{props.placeholder}</Text>
    </View>
  );
};

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

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: '#0f172a',
  },
  header: {
    backgroundColor: '#1e293b',
    paddingTop: 20,
    paddingBottom: 25,
    paddingHorizontal: 20,
    borderBottomWidth: 1,
    borderBottomColor: '#334155',
  },
  headerTitle: {
    fontSize: 26,
    fontWeight: '700',
    color: '#f1f5f9',
    textAlign: 'center',
    marginBottom: 5,
  },
  headerSubtitle: {
    fontSize: 15,
    color: '#94a3b8',
    textAlign: 'center',
  },
  contentContainer: {
    padding: 20,
  },
  section: {
    marginBottom: 30,
  },
  sectionTitle: {
    fontSize: 22,
    fontWeight: '700',
    color: '#e2e8f0',
    marginBottom: 20,
    paddingLeft: 10,
    borderLeftWidth: 4,
    borderLeftColor: '#3b82f6',
  },
  tagsRow: {
    flexDirection: 'row',
    flexWrap: 'wrap',
    gap: 10,
  },
  tag: {
    flexDirection: 'row',
    alignItems: 'center',
    borderRadius: 20,
    paddingHorizontal: 12,
    paddingVertical: 6,
  },
  tagSmall: {
    paddingHorizontal: 8,
    paddingVertical: 4,
  },
  tagMedium: {
    paddingHorizontal: 12,
    paddingVertical: 6,
  },
  tagLarge: {
    paddingHorizontal: 16,
    paddingVertical: 8,
  },
  tagDefault: {
    backgroundColor: '#334155',
  },
  tagPrimary: {
    backgroundColor: '#3b82f6',
  },
  tagSuccess: {
    backgroundColor: '#10b981',
  },
  tagWarning: {
    backgroundColor: '#f59e0b',
  },
  tagDanger: {
    backgroundColor: '#ef4444',
  },
  tagInfo: {
    backgroundColor: '#0ea5e9',
  },
  tagIcon: {
    width: 14,
    height: 14,
    marginRight: 6,
    tintColor: '#ffffff',
  },
  tagText: {
    fontSize: 14,
    fontWeight: '600',
    color: '#ffffff',
  },
  closeButton: {
    marginLeft: 6,
  },
  closeIcon: {
    width: 12,
    height: 12,
    tintColor: '#ffffff',
  },
  tagInputContainer: {
    backgroundColor: '#1e293b',
    borderRadius: 12,
    padding: 15,
    borderWidth: 1,
    borderColor: '#334155',
  },
  tagsContainer: {
    flexDirection: 'row',
    flexWrap: 'wrap',
    gap: 8,
    marginBottom: 15,
  },
  inputContainer: {
    flexDirection: 'row',
    alignItems: 'center',
  },
  tagInput: {
    flex: 1,
    backgroundColor: '#334155',
    borderRadius: 8,
    paddingHorizontal: 12,
    paddingVertical: 10,
    color: '#f1f5f9',
    fontSize: 16,
  },
  addButton: {
    backgroundColor: '#3b82f6',
    borderRadius: 8,
    padding: 10,
    marginLeft: 10,
  },
  addIcon: {
    width: 20,
    height: 20,
    tintColor: '#ffffff',
  },
  tagsPreview: {
    marginTop: 15,
  },
  previewTitle: {
    fontSize: 16,
    fontWeight: '600',
    color: '#cbd5e1',
    marginBottom: 10,
  },
  selectorHeader: {
    flexDirection: 'row',
    justifyContent: 'space-between',
    alignItems: 'center',
    marginBottom: 15,
  },
  selectedCount: {
    fontSize: 16,
    fontWeight: '600',
    color: '#cbd5e1',
  },
  clearButton: {
    fontSize: 14,
    color: '#3b82f6',
    fontWeight: '600',
  },
  tagsGrid: {
    flexDirection: 'row',
    flexWrap: 'wrap',
    gap: 10,
  },
  selectorTag: {
    backgroundColor: '#334155',
    borderRadius: 20,
    paddingHorizontal: 15,
    paddingVertical: 8,
    flexDirection: 'row',
    alignItems: 'center',
  },
  selectorTagSelected: {
    backgroundColor: '#3b82f6',
  },
  selectorTagText: {
    fontSize: 14,
    color: '#cbd5e1',
    fontWeight: '500',
  },
  selectorTagTextSelected: {
    color: '#ffffff',
  },
  checkIcon: {
    width: 14,
    height: 14,
    tintColor: '#ffffff',
    marginLeft: 6,
  },
  featuresSection: {
    backgroundColor: '#1e293b',
    borderRadius: 16,
    padding: 20,
    marginBottom: 30,
    borderWidth: 1,
    borderColor: '#334155',
  },
  featuresTitle: {
    fontSize: 20,
    fontWeight: '700',
    color: '#f1f5f9',
    marginBottom: 15,
    textAlign: 'center',
  },
  featureList: {
    paddingLeft: 10,
  },
  featureItem: {
    flexDirection: 'row',
    alignItems: 'center',
    marginBottom: 12,
  },
  featureBullet: {
    fontSize: 18,
    color: '#3b82f6',
    marginRight: 10,
  },
  featureText: {
    fontSize: 16,
    color: '#cbd5e1',
    flex: 1,
  },
  usageSection: {
    backgroundColor: '#1e293b',
    borderRadius: 16,
    padding: 20,
    borderWidth: 1,
    borderColor: '#334155',
  },
  usageTitle: {
    fontSize: 20,
    fontWeight: '700',
    color: '#f1f5f9',
    marginBottom: 15,
    textAlign: 'center',
  },
  usageText: {
    fontSize: 16,
    color: '#cbd5e1',
    lineHeight: 24,
    textAlign: 'center',
  },
  footer: {
    paddingVertical: 15,
    alignItems: 'center',
    borderTopWidth: 1,
    borderTopColor: '#334155',
    backgroundColor: '#1e293b',
  },
  footerText: {
    fontSize: 14,
    color: '#94a3b8',
    fontWeight: '500',
  },
  textInputContainer: {
    flex: 1,
    backgroundColor: '#334155',
    borderRadius: 8,
    paddingHorizontal: 12,
    paddingVertical: 10,
  },
  textInputPlaceholder: {
    fontSize: 16,
    color: '#94a3b8',
  },
});

export default App;

这段React Native标签组件代码实现了一个灵活的标签管理系统，包含基础标签展示和标签输入两个核心功能模块。标签组件通过类型配置系统支持六种预设样式，通过尺寸配置系统支持三种大小规格，同时具备图标显示、可关闭和点击交互等特性。标签输入组件则提供了完整的标签增删改查功能，用户可以通过文本输入添加新标签，通过关闭按钮移除已有标签，整个系统通过状态管理实现数据的响应式更新。

在鸿蒙系统适配方面，这套实现方案面临着深层次的技术架构差异。React Native的标签系统依赖于TouchableOpacity和View等基础组件的组合，通过样式系统控制视觉表现，而鸿蒙的ArkUI框架提供了更高效的组件抽象和声明式开发范式。鸿蒙的Tag组件是系统级的优化实现，内置了完整的标签管理逻辑和状态跟踪机制，开发者只需通过简单的属性配置即可实现复杂的标签效果。

鸿蒙的标签系统采用声明式配置方式，通过@State和@Prop装饰器实现响应式数据绑定，当标签状态发生变化时，系统会自动处理UI更新和动画过渡。这种设计理念与React Native通过手动状态管理和条件渲染实现的方式有本质区别。鸿蒙的组件在底层进行了深度优化，能够充分利用系统的渲染管线，提供更流畅的视觉体验和更低的内存占用。

布局系统的差异也十分显著。React Native使用Flexbox布局模型配合绝对定位来实现标签的排列和定位，需要开发者手动计算各种元素的尺寸和位置关系。鸿蒙虽然也支持类似的布局方式，但其Tag组件内部已经优化了布局算法，能够自动处理标签间的间距、对齐和换行等复杂布局需求，无需开发者手动调整样式参数。特别是在处理大量标签的流式布局时，鸿蒙的实现更加简洁高效。

请添加图片描述

手势处理机制方面，React Native通过TouchableOpacity组件处理点击事件，而鸿蒙的Tag组件内置了完整的手势识别系统，能够自动处理点击、长按、滑动等复杂交互行为。鸿蒙的手势系统直接在Native层完成识别和处理，避免了JavaScript桥接带来的性能损耗，提供了更自然的交互体验和更精确的事件响应。

资源管理机制存在重要差异。React Native通过URI引用网络图标资源，这种方式在鸿蒙上需要转换为ResourceManager管理的本地资源。鸿蒙应用对资源的使用有严格的规范，特别是在图标尺寸和格式方面有明确的标准要求，这影响了组件的视觉一致性和加载性能。鸿蒙的ResourceManager提供了更完善的资源缓存和加载机制，能够根据设备屏幕密度自动选择合适的资源版本。

动画系统的实现方式完全不同。React Native的标签切换动画需要通过Animated API手动实现，而鸿蒙的Tag组件内置了流畅的状态切换动画，包括颜色过渡、尺寸变化和位置移动等效果。鸿蒙的动画系统在Native层执行，能够实现更精确的时间控制和更高效的资源利用，特别是在处理多个标签同时更新时表现出更好的性能特征。

事件处理流程上，React Native的触摸事件需要通过JavaScript桥接层传递，而鸿蒙的手势识别直接在Native层完成，这种架构差异影响了标签交互的响应速度和用户体验。鸿蒙的事件系统还支持更丰富的回调机制，如标签添加完成、删除确认、点击取消等细粒度的控制，这些在React Native中都需要开发者自行实现。

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：

请添加图片描述

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 # react.js # javascript
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