react native 创建原生插件流程

1. 全局安装 create-react-native-module 模块

$ yarn global add create-react-native-module

2. 创建插件工程
   创建工程时需要指定 package-identifier, 按项目实际命名要求处理，未指定默认为 com.reactlibrary

$ create-react-native-module --package-identifier com.example.myplugin --generate-example my-plugin

生成的插件项目名称为 react-native-my-plugin, android 项目的 packageName 为 com.example.myplugin，项目中包含 example 目录，目录中包含插件使用的样例代码。

3. 安装相关依赖

$ yarn install

注：直接执行 create-react-native-module，可查看命令支持相关参数说明：

Usage: create-react-native-module [options] <name>

creates a React Native library module for one or more platforms

Options:
  -V, --version                                               output the version number
  --module-name [moduleName]                                  The module package name to be used in package.json. Default: react-native-(name in param-case)
  --view                                                      Generate the package as a very simple native view component
  --object-class-name [objectClassName]                       The name of the object class to be exported by both JavaScript and native code. Default: (name in PascalCase)
  --prefix [prefix]                                           DEPRECATED: The prefix of the name of the object class to be exported by both JavaScript and native code, ignored if --object-class-name is specified (default: "")
  --module-prefix [modulePrefix]                              The prefix of the generated module package name, ignored if --module-name is specified (default: "react-native")
  --package-identifier [packageIdentifier]                    [Android] The Java package identifier used by the Android module (default: "com.reactlibrary")
  --platforms <platforms>                                     Platforms the library module will be created for - comma separated (default: "ios,android")
  --tvos-enabled                                              Generate the module with tvOS build enabled (requires react-native-tvos fork, with minimum version of 0.60, and iOS platform to be enabled)
  --github-account [githubAccount]                            The github account where the library module is hosted (default: "github_account")
  --author-name [authorName]                                  The author's name (default: "Your Name")
  --author-email [authorEmail]                                The author's email (default: "yourname@email.com")
  --license [license]                                         The license type (default: "MIT")
  --use-apple-networking                                      [iOS] Use `AFNetworking` dependency as a sample in the podspec & use it from the iOS code
  --generate-example                                          Generate an example project and add the library module to it with symlink by defult, with overwrite of example metro.config.js to add workaround for Metro symlink issue - requires both react-native-cli and yarn to be installed globally
  --example-file-linkage                                      DEPRECATED: do `yarn add file:../` instead of `yarn add link:../` in a generated example project, and add a postinstall workaround script, with no overwrite of example metro.config.js
  --example-name [exampleName]                                Name for the example project (default: "example")
  --example-react-native-version [exampleReactNativeVersion]  React Native version for the generated example project (default: "react-native@latest")
  --write-example-podfile                                     [iOS] EXPERIMENTAL FEATURE NOT SUPPORTED: write (or overwrite) example ios/Podfile
  -h, --help                                                  display help for command