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@bingtang-rn/react-native-dropdown for HarmonyOS\r\n\r\n本项目基于 [react-native-dropdown](git@github.com:alinz/react-native-dropdown) 开发，为 React Native 鸿蒙（OpenHarmony）适配版本。如果在使用过程中有任何问题，可以在GitCode提Issue，会及时跟进。issue地址：[issues](https://gitcode.com/rn_ohos_plugin/react_native_dropdown/issues)。\r\n\r\n## 版本对应关系\r\n\r\n| 鸿蒙适配包版本 | 原始库版本 | 支持 RN 版本 | Autolink | 编译 API 版本 |\r\n| ------------ | ---------- | ------------ | -------- | ------------- |\r\n| 0.0.6 | 0.0.6 | 0.72+ | 否（js-only） | API17+ |\r\n\r\n## 安装\r\n\r\n```bash\r\nnpm install @bingtang-rn/react-native-dropdown\r\n```\r\n\r\n## 使用\r\n\r\n```tsx\r\nimport { Select, Option, OptionList, updatePosition } from 'react-native-dropdown';\r\n\r\n// Basic usage\r\nconst optionListRef = useRef(null);\r\n\r\n<Select\r\n  width={200}\r\n  height={40}\r\n  optionListRef={() => optionListRef.current}\r\n  onSelect={(value) => console.log('Selected:', value)}\r\n  defaultValue=\"Option A\"\r\n>\r\n  <Option>Option A</Option>\r\n  <Option>Option B</Option>\r\n  <Option>Option C</Option>\r\n</Select>\r\n\r\n<OptionList ref={optionListRef} />\r\n```\r\n\r\n> import 时使用原库名 `'react-native-dropdown'`，而非鸿蒙包名。\r\n\r\n**平台差异**：\r\n- HarmonyOS 上 `UIManager.measure` 不可用（Fabric 模式限制），已替换为 `ref.current.measure()` 获取组件绝对坐标，功能对等。\r\n- `updatePosition()` 函数在 HarmonyOS 上使用 `ref.current.measure()` 替代 `UIManager.measure`，行为一致。\r\n\r\n**权限要求**：\r\n- 无需任何权限声明。\r\n\r\n## Link\r\n\r\n| 版本 | 是否支持 Autolink |\r\n|------|------------------|\r\n| 当前版本 | 否（js-only 库，无需原生注册） |\r\n\r\n如使用版本支持 Autolink 且工程已接入，可跳过手动配置。\r\n\r\n<details>\r\n<summary>Manual Link 配置</summary>\r\n\r\n> **说明**：本模块需要同时在 C++ 侧和 ETS 侧注册 Package。\r\n\r\n### 1. Overrides RN SDK\r\n\r\n在工程根目录 `oh-package.json5` 添加：\r\n\r\n```json\r\n{\r\n  \"overrides\": {\r\n    \"@rnoh/react-native-openharmony\": \"./react_native_openharmony\"\r\n  }\r\n}\r\n```\r\n\r\n### 2. 引入原生端依赖\r\n\r\n打开 `entry/oh-package.json5`，添加：\r\n\r\n```json\r\n\"dependencies\": {\r\n  \"@bingtang-rn/react-native-dropdown\": \"file:../../node_modules/@bingtang-rn/react-native-dropdown/harmony/dropdown.har\"\r\n}\r\n```\r\n\r\n执行 `ohpm install`。\r\n\r\n### 3. 配置 CMakeLists\r\n\r\n打开 `entry/src/main/cpp/CMakeLists.txt`，添加：\r\n\r\n```cmake\r\nset(OH_MODULES \"${CMAKE_CURRENT_SOURCE_DIR}/../../../oh_modules\")\r\n\r\nadd_subdirectory(\"${OH_MODULES}/@bingtang-rn/react-native-dropdown/src/main/cpp\" ./dropdown)\r\n\r\ntarget_link_libraries(rnoh_app PUBLIC dropdown)\r\n```\r\n\r\n### 4. 注册 Package（C++ 侧）\r\n\r\n打开 `entry/src/main/cpp/PackageProvider.cpp`，添加：\r\n\r\n```cpp\r\n#include \"DropdownPackage.h\"\r\n\r\nstd::vector<std::shared_ptr<Package>> PackageProvider::getPackages(Package::Context ctx) {\r\n    return {\r\n        std::make_shared<DropdownPackage>(ctx),\r\n    };\r\n}\r\n```\r\n\r\n### 5. 注册 Package（ETS 侧）\r\n\r\n打开 `entry/src/main/ets/RNPackagesFactory.ets`，添加：\r\n\r\n```typescript\r\nimport { DropdownPackage } from '@bingtang-rn/react-native-dropdown/ts';\r\n\r\nexport function createRNPackages(ctx: RNPackageContext): RNPackage[] {\r\n  return [\r\n    new DropdownPackage(ctx),\r\n  ];\r\n}\r\n```\r\n\r\n</details>\r\n\r\n## 属性 / API\r\n\r\n| API | 描述 | 参数 | 返回值 | HarmonyOS 支持 |\r\n|-----|------|------|--------|----------------|\r\n| Select | 下拉选择组件 | width, height, optionListRef, onSelect, defaultValue, placeholder, style, styleOption, styleText, optionListProps, value | — | ✅ 完全支持 |\r\n| Select.reset() | 重置选择为默认值 | — | void | ✅ 完全支持 |\r\n| Select.show() | 编程式打开下拉列表 | — | void | ✅ 完全支持 |\r\n| Option | 选项组件 | style, styleText, value, children | — | ✅ 完全支持 |\r\n| OptionList | 选项列表浮层组件 | customScrollViewComp | — | ✅ 完全支持 |\r\n| updatePosition | 获取组件位置 | ref, debug? | void | ✅ 完全支持 |\r\n\r\n### 平台差异\r\n- `updatePosition`：原库使用 `UIManager.measure` + `findNodeHandle`，HarmonyOS Fabric 模式不支持，已替换为 `ref.current.measure()`，功能对等（均返回 pageX/pageY 绝对坐标）。\r\n\r\n### 未实现功能\r\n无\r\n\r\n### 使用限制\r\n- `OptionList` 组件须渲染在与 `Select` 同级的根层级，以支持绝对定位的浮层效果。\r\n- 原库代码极旧（RN 0.10 时代），本适配版已将废弃 API（componentWillReceiveProps、字符串 ref、PropTypes）迁移为现代写法。\r\n\r\n## 快速验证（运行 Example）\r\n\r\n### 前置条件\r\n\r\n| 依赖 | 版本要求 |\r\n|------|----------|\r\n| Node.js | >= 18 |\r\n| DevEco Studio | 5.0+ / 6.0+ |\r\n| HarmonyOS SDK | API 17+ |\r\n\r\n### 运行步骤\r\n\r\n**1. 克隆仓库**\r\n\r\n```bash\r\ngit clone <仓库地址>\r\ncd <仓库目录>\r\n```\r\n\r\n**2. 安装依赖并构建**\r\n\r\n```bash\r\nnpm install --legacy-peer-deps\r\nnpm pack           # 生成 tgz 包（会自动触发 prepare 构建 JS 产物）\r\n```\r\n\r\n**3. 进入 example 目录，安装依赖**\r\n\r\n```bash\r\ncd example\r\nnpm install --legacy-peer-deps\r\n```\r\n\r\n**4. 生成 JS Bundle**\r\n\r\n```bash\r\nnpm run dev\r\n```\r\n\r\n产物：`harmony/entry/src/main/resources/rawfile/bundle.harmony.js`\r\n\r\n**5. 用 DevEco Studio 打开鸿蒙工程**\r\n\r\n- 打开 DevEco Studio\r\n- 选择 `example/harmony` 目录\r\n- 等待 Sync 完成\r\n\r\n**6. 编译并运行 HAP**\r\n\r\n在 DevEco Studio 中点击运行按钮，将 HAP 安装到设备/模拟器。\r\n\r\n> **注意**：Example 中已预置插件依赖和 Package 注册，无需手动配置 Link。\r\n\r\n## 约束与限制\r\n\r\n### 兼容性\r\n\r\n- RNOH: 0.72+\r\n- HarmonyOS SDK: API 17+\r\n- DevEco Studio: 5.0+\r\n\r\n## 遗留问题\r\n\r\n无（或列出已知问题）\r\n\r\n## 开源协议\r\n\r\n本项目基于 [MIT](https://github.com/alinz/react-native-dropdown/blob/master/LICENSE)，详见 [LICENSE](./LICENSE) 文件。\r\n","readmeFilename":"README.md"}