2020-04-13 20:00:02 +08:00
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# 深入小程序系列之三、 ReactNative和小程序混编
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## 背景
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本文我们将开一下脑洞，在 ReactNative 工程基础上下集成及运行小程序方案。
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先看一下效果如下:
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## 环境搭建
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```
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npm install -g react-native-cli yarn
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```
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2020-04-13 20:02:01 +08:00
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官方的[环境搭建文档](https://reactnative.dev/docs/environment-setup)已经有详细的说明，这里不再重复。大家可以看下我本地的环境配置版本，目前整个项目运行稳定，可以借鉴。
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2020-04-13 20:00:02 +08:00
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```bash
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$ react-native info
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info Fetching system and libraries information...
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System:
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OS: macOS 10.15.3
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CPU: (8) x64 Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz
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Memory: 93.87 MB / 16.00 GB
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Shell: 3.2.57 - /bin/bash
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Binaries:
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Node: 10.20.1 - ~/.nvm/versions/node/v10.20.1/bin/node
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Yarn: 1.22.4 - ~/.nvm/versions/node/v10.20.1/bin/yarn
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npm: 6.14.4 - ~/.nvm/versions/node/v10.20.1/bin/npm
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Watchman: Not Found
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Managers:
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CocoaPods: 1.9.1 - /usr/local/bin/pod
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SDKs:
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iOS SDK:
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Platforms: iOS 13.4, DriverKit 19.0, macOS 10.15, tvOS 13.4, watchOS 6.2
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Android SDK:
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API Levels: 26, 28, 29
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Build Tools: 28.0.3, 29.0.2, 29.0.3, 30.0.0
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System Images: android-26 | Google Play Intel x86 Atom
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Android NDK: Not Found
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IDEs:
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Android Studio: 3.6 AI-192.7142.36.36.6241897
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Xcode: 11.4/11E146 - /usr/bin/xcodebuild
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Languages:
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Java: 10.0.1 - /Library/Java/JavaVirtualMachines/jdk-10.0.1.jdk/Contents/Home/bin/javac
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Python: 2.7.16 - /usr/bin/python
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npmPackages:
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@react-native-community/cli: Not Found
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react: 16.11.0 => 16.11.0
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react-native: 0.62.2 => 0.62.2
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npmGlobalPackages:
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*react-native*: Not Found
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```
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## 新建 ReactNative 样例工程
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### 新建 ReactNative 工程
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```bash
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react-native init mopdemo
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```
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稍等一会...
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初始化项目完成之后，你可以选择两种不同的方式运行 App 在 iOS/Android 平台：
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注意！ReactNative需要依赖本地安装对应的 iOS,Android 开发工具，即需要安装 Xcode 和 AndroidStudio。具体安装使用方法这里不赘述。
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这里我们用 VSCode+Xcode 作为开发组合环境。
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### 集成小程序解析引擎
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这里我们采用凡泰集成免费社区版的小程序解析引擎，只需要 10 行代码量不到即可完成小程序集成。
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1. 引入小程序引擎插件。在 package.json 文件中引入小程序 ReactNative 插件
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```javascript
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"react-native-mopsdk": "^1.0.1"
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```
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2. 在 main.dart 文件中增加以下小程序引擎初始化方法。 Mop.instance.initialize 这里需要用到 sdkkey 和 secret。可以直接在https://mp.finogeeks.com免费注册获取。注册使用方法可以参考[接入指引](https://mp.finogeeks.com/mop/document/introduce/access/mechanism.html)
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```javascript
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import MopSDK from 'react-native-mopsdk';
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// 1. mop初始化
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MopSDK.initialize({
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appkey: '22LyZEib0gLTQdU3MUauASlb4KFRNRajt4RmY6UDSucA',
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secret: '4a915e447bcbd439',
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apiServer: 'https://mp.finogeeks.com',
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apiPrefix: '/api/v1/mop'
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}, (data) => {
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console.log('message;', data);
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});
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```
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3. 打开小程序
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```javascript
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MopSDK.openApplet('appid','','',(data)=>{});
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```
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* **SDKKEY** 和 **Secret** 可以从前面部署的社区版的管理后台获取。
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* **apiServer** 为这里是小程序生态后端的服务地址也就是前文所输入的`IP:端口`。
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* **小程序id** 为在管理后台上架的小程序唯一ID(在小程序小架时自动生成)
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* 上述的参数可以在前文服务器部署的后台界面上获取，亦可以在没有部署服务端的情况下在[https://mp.finogeeks.com](https://mp.finogeeks.com)快速注册，免费获取。
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* **重要事情说三遍，您可以在官方的github仓库中查看示例代码** [https://github.com/finogeeks/mop-react-native-demo](https://github.com/finogeeks/mop-react-native-demo)
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