How to check the “Allow Full Access” is enabled in iOS 8?

Question

In iOS 8, when develop a custom keyboard and set RequestsOpenAccess property to YES in info.plist, there is a toggle button at Settings-> Add New Keyboard named \"Allow Full

Answer 1

just use

    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0),     
^{
    AudioServicesPlaySystemSound(1104);
    });

the tirck is ,when the full access is enabled ,the sound will play ,if not ,because it's call is in the background thread will no block the main thread