iOS 9 not opening Instagram app with URL SCHEME

Question

The following URL opens on iOS 8.3 and lower, but it does not work and iOS 9

let instagramURL = NSURL(string: \"instagram://app\")

Why won\

Answer 1

This is a new security feature of iOS 9. Watch WWDC 2015 Session 703 for more information.

Any app built with SDK 9 needs to provide a LSApplicationQueriesSchemes entry in its plist file, declaring which schemes it attempts to query.

LSApplicationQueriesSchemes

 urlscheme
 urlscheme2
 urlscheme3
 urlscheme4