UIApplication.sharedApplication() is unavailable

Question

I just upgraded from XCode 6.4 to Xcode 7 GM and get started to change the code to be compliant with Swift 2. I could not come over the following errors.

The project

Answer 1

Your target may have the "Allow app extension API only" option checked.

Check your target's general settings to see if that option is enabled in Deployment Info > App Extensions.