$ npm install @sishuguojixuefu/react-native-office-viewer
or
$ yarn add @sishuguojixuefu/react-native-office-viewer
$ react-native link react-native-webview
...
import { OfficeViewer } from '@sishuguojixuefu/react-native-office-viewer'
...
<OfficeViewer containerStyle={{ marginTop: 10 }} source="http://storage.xuetangx.com/public_assets/xuetangx/PDF/1.xls" />
...