API for iOS registered protocol handlers

Question

Is there an API where I can check if a registered iOS protocol handler exists or not? I'm looking to figure out if a few protocol handlers that were given to me are valid.

Answer 1

If you're talking about application URL schemes, you can use:

    [[UIApplication sharedApplication] canOpenURL:<#(NSURL *)#>]

which will return YES if there is an app that can open the URL scheme or NO if there isn't.