–create project

react-native init myapp –version 0.55.4

cd myapp

— react ui

npm i react-native-elements –save

— icons

npm i –save react-native-vector-icons

react-native link react-native-vector-icons

–导航

npm install –save react-navigation

–拍照扫描二维码

npm install react-native-camera –save

react-native link react-native-camera