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Update README.md for installing react-native-unimodules when Adding Taro-React Native to an Existing Application #25

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Update README.md for installing react-native-unimodules when Adding Taro-React Native to an Existing Application #25

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17 changes: 17 additions & 0 deletions README.md
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Expand Up @@ -6,6 +6,8 @@ Taro 原生 React Native 壳子，和 React Native init 的工程的区别是，

如已有原生项目，需自行集成，请参考 [react-native-unimodules](https://github.com/unimodules/react-native-unimodules) Readme。

如果`Taro`代码和原生项目代码的目录结构和`React-Native`官方文档建议的不同，则添加`react-native-unimodules`时请参考现有问题中该问题的做法。

## 现有问题

- 部分应用对包大敏感，觉得集成 [react-native-unimodules](https://github.com/unimodules/react-native-unimodules) 后包大小增加太多。
Expand All @@ -29,6 +31,21 @@ Taro 原生 React Native 壳子，和 React Native init 的工程的区别是，

参考：https://github.com/NervJS/taro/issues/3572

- 现有原生项目集成`react-native-unimodules`没成功

如果`Taro`代码和原生项目代码的目录结构和`React-Native`官方文档建议的不同，则添加`react-native-unimodules`并进行`pod install`时，会有以下提示：
```
"No unimodules found. Are you sure you've installed JS dependencies before installing pods?"
```
并且引入以下头文件不成功，因为模块没被成功导入。
```
#import <UMCore/UMModuleRegistry.h>
#import <UMReactNativeAdapter/UMNativeModulesProxy.h>
#import <UMReactNativeAdapter/UMModuleRegistryAdapter.h>
```

此时需要传入`node_modules`路径，即修改`Podfile`文件中的`use_unimodules!()`为`use_unimodules!({modules_paths: ['./xxx/node_modules']})`

## 启动代码编译及 Metro Bundler Server

运行 `taro build` 命令，Taro 将会开始编译文件：
Expand Down