On this pageSharingApp Index Enumeration MembersFacebookFacebookMessengerGooglePlusMailTwitterWhatsAppEnumeration Members FacebookFacebook: 2 = 2FacebookMessengerFacebookMessenger: 3 = 3GooglePlusGooglePlus: 4 = 4MailMail: 0 = 0TwitterTwitter: 5 = 5WhatsAppWhatsApp: 1 = 1