The problem is described here https://facebook.github.io/react-native/docs/linux-windows-support.html
You have to start packager manually, exactly how it is there explained:
node node_modules/react-native/packager/packager.js
https://facebook.github.io/react-native/docs/linux-windows-support.html
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.