Detect if app is running in Slide Over or Split View mode in iOS 9

Question

In iOS 9, is it possible to detect when an app is running in iOS 9\'s Slide Over or Split View mode?

I\'ve tried reading through Apple\'s documentation on iOS 9 mult

Answer 1

After much 'tinkering', I have found a solution for my App that may work for you:

In AppDelegate.swift, create the following variable:

var slideOverActive: Bool = false

Then, in ALL of your view controllers, add the UIApplicationDelegate to the Class definition, create an appDelegate variable, and then add the below traitCollectionDidChange function:

class myViewController: UIViewController, UIApplicationDelegate {

var appDelegate = UIApplication.sharedApplication().delegate as! AppDelegate

override func traitCollectionDidChange(previousTraitCollection: UITraitCollection?) {

        let screenWidth = UIScreen.mainScreen().bounds.width

        if previousTraitCollection != nil {
            let horizontalSizeClass: Int = previousTraitCollection!.horizontalSizeClass.rawValue

            if screenWidth == 1024 || screenWidth == 768 { // iPad

                if horizontalSizeClass == 2 { // Slide Over is ACTIVE!

                    appDelegate.slideOverActive = true

                } else {

                    appDelegate.slideOverActive = false

                }
            }
        }
    }

}

Then, wherever in your code you wish to check whether the slide-over is active or not, simply check:

if appDelegate.slideOverActive == true {

    // DO THIS

} else {

    // DO THIS

}

It's a bit of a workaround, but it works for me at the moment.

Happy trails!