rn 文件 图片上传参考:
1.# react native 之上传文件
2.# React Native上传图片
3.
4.React Native 使用react-native-image-picker库实现图片上传功能
5.
插件地址https://github.com/react-native-community/react-native-image-picker
https://www.jianshu.com/p/efd0412ce3d6