一、架构设计要点
1.混合渲染方案:
(1)使用React Native 0.72+版本(支持Hermes引擎)
(2)通过FFI调用HarmonyOS的原子化服务能力
(3)主题资源采用双端共享方案
2.关键技术栈:
(1)状态管理:Redux Toolkit + HarmonyOS持久化存储
(2)动画引擎:Reanimated 3.0 + Lottie
(3)主题切换:动态StyleSheet生成
二、核心代码实现
import { createContext } from 'react';
import { DynamicColorIOS } from 'react-native';export const ThemeContext = createContext({currentTheme: 'light',colors: {light: {primary: '#1890ff',background: '#ffffff'},harmony: {primary: '#FF5722',background: '#F5F5F5'}}
});
import { Ability, AbilityStage } from '@ohos.application.Ability';export default class ThemeBridge extends Ability {onConnect(want) {return new ThemeServiceStub('rpc');}
}class ThemeServiceStub {switchTheme(themeName: string) {// 调用HarmonyOS主题服务}
}
三、特色功能模块
1.分布式主题同步:
import { HarmonyOS } from 'react-native-harmony-connect';const syncTheme = (theme) => {HarmonyOS.distributeData({type: 'theme/update',payload: theme});
}
2.动态资源加载:
function loadRemoteTheme(url) {const response = await fetch(`${url}/manifest.json`);const { assets } = await response.json();return {colors: await (await fetch(assets.colors)).json(),images: assets.images.map(prefetchImage)};
}
实现主题资源的按需加载与缓存管理。
四、调试与优化
1.性能关键点:
(1)使用react-native-harmony-profiler
监控渲染性能
(2)对主题切换操作添加防抖处理
(3)图片资源采用SVG转ArkUI组件方案
2.兼容性处理:
Platform.select({harmony: () => require('./harmony-styles'),default: () => require('./default-styles')
})