
The Share API provides methods for sharing content in any sharing-enabled apps the user may have installed.
The Share API works on iOS, Android, and the Web (using the new Web Share API), though web support is currently spotty.
import { Plugins } from '@capacitor/core';
const { Share } = Plugins;
let shareRet = await Share.share({
  title: 'See cool stuff',
  text: 'Really awesome thing you need to see right meow',
  url: 'http://ionicframework.com/',
  dialogTitle: 'Share with buddies'
});
Each platform uses a different set of fields, but you should supply them all.