1.安装npm
2.安装react native组件
3.启动RN, react-native start或npm start
此时可以访问本地页面http://127.0.0.1:8081
实践中遇到的问题
1.当在工程目录下输入npm start时，会提示
Looks like you installed react-native globally, maybe you meant react-native-cli?
To fix the issue, run:
npm uninstall -g react-native
npm install -g react-native-cli
意思是全局安装了RN，此时输入react-native start即可启动RN了
原文：http://www.cnblogs.com/zhy-cn/p/5188871.html