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
TypeScript
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'
}
}
});
TypeScript
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:
TypeScript
import { HarmonyOS } from 'react-native-harmony-connect';
const syncTheme = (theme) => {
HarmonyOS.distributeData({
type: 'theme/update',
payload: theme
});
}
2.动态资源加载:
TypeScript
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:
TypeScript
Platform.select({
harmony: () => require('./harmony-styles'),
default: () => require('./default-styles')
})