I am developing an iOS application in which I want to retrieve my facebook friends & send it to server for checking who are already using this app using their email or phone number. Once I get friends who are not using my application then I will show "Invite" button to send an email to their email address with app store link to download the app.
But as per facebook permissions , we can not retrieve the facebook friends email address. Can anybody know how can I implement this feature in other way ? Any kind of help is appreciated. Thanks.
you can not retrieve facebook friends email address but you can post on their wall whatever link you want to post i.e. app store link to download the app.