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

I'm late to the party, but if you want a property that works independent of the orientation, try this one:

extension UIApplication 
{
    func isRunningInFullScreen() -> Bool
    {
        if let w = self.keyWindow
        {
            let maxScreenSize = max(UIScreen.mainScreen().bounds.size.width, UIScreen.mainScreen().bounds.size.height)
            let minScreenSize = min(UIScreen.mainScreen().bounds.size.width, UIScreen.mainScreen().bounds.size.height)
            let maxAppSize = max(w.bounds.size.width, w.bounds.size.height)
            let minAppSize = min(w.bounds.size.width, w.bounds.size.height)
            return maxScreenSize == maxAppSize && minScreenSize == minAppSize
        }

        return true
    }
}

Answer 2

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!

Answer 3

Trying [UIScreen mainScreen].bounds, self.window.screen.bounds, self.window.frame, UIApplication.sharedApplication.keyWindow.frame and so on, the only working solution was deprecated method

CGRect frame = [UIScreen mainScreen].applicationFrame;

Which I fixed this way

CGRect frame = [UIScreen mainScreen].applicationFrame;
frame = CGRectMake(0, 0, frame.size.width + frame.origin.x, frame.size.height + frame.origin.y);
self.window.frame = frame;

Answer 4

By using below code you can check splitViewController is Collapsed or Not

if splitViewController?.isCollapsed ?? false {
    // splitview collapsed
} else {
    // splitview not collapsed
 }

Answer 5

You can watch both -willTransitionToTraitCollection:withTransitionCoordinator: for the size class and viewWillTransitionToSize:withTransitionCoordinator: for the CGSize of your view. Hardcoding in size values isn't recommended though.

Answer 6

Like the solution by Dan Rosenstark, but changed to work on the new iPad Pro's that seem to report a different frame and screen.bounds height based on if it's ran directly on the device through Xcode, or if it is compiled and released through TestFlight or App Store. The height would return 980 when through AS or TF, rather than 1024 as it was supposed to like through Xcode causing it to be impossible to return true.

extension UIApplication {
    public var isSplitOrSlideOver: Bool {
        guard let w = self.delegate?.window, let window = w else { return false }
        return !(window.frame.width == window.screen.bounds.width)
    }
}