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

Assuming two apps TestA and TestB. TestB wants to query if TestA is installed. "TestA" defines the following URL scheme in its info.plist file:

CFBundleURLTypes

    
        CFBundleURLSchemes
        
            testA
        
    

The second app "TestB" tries to find out if "TestA" is installed by calling:

[[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"TestA://"]];

But this will normally return NO in iOS9 because "TestA" needs to be added to the LSApplicationQueriesSchemes entry in TestB's info.plist file. This is done by adding the following code to TestB's info.plist file:

LSApplicationQueriesSchemes

    TestA

A working implementation can be found here: https://github.com/gatzsche/LSApplicationQueriesSchemes-Working-Example