Facebook not open page in app swift 3

Question

I have a link to my facebook, on my website, which opens in the phone\'s browser.

I would like it to open in the facebook app by default, if the app is installed.

Answer 1

If you call the “canOpenURL” method on a URL that is not in your whitelist, it will return “NO”, even if there is an app installed that has registered to handle this scheme. A “This app is not allowed to query for scheme xxx” syslog entry will appear.

If you call the “openURL” method on a URL that is not in your whitelist, it will fail silently. A “This app is not allowed to query for scheme xxx” syslog entry will appear.

So you have to put fb in LSApplicationQueriesSchemes in your info.plist