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 multitasking, but haven't had any luck with this…
I ask because I might have a feature in my app that I'd like to disable when the app is opened in a Slide Over.
Just check if your window occupies the whole screen:
BOOL isRunningInFullScreen = CGRectEqualToRect([UIApplication sharedApplication].delegate.window.frame, [UIApplication sharedApplication].delegate.window.screen.bounds);
If this is false, then you're running in a split view or a slide over.
Here is the code snipped which will automatically maintain this flag irrespective of rotation
-(void)traitCollectionDidChange:(UITraitCollection *)previousTraitCollection
{
// simply create a property of 'BOOL' type
isRunningInFullScreen = CGRectEqualToRect([UIApplication sharedApplication].delegate.window.frame, [UIApplication sharedApplication].delegate.window.screen.bounds);
}
Just another way to repackage all of this
extension UIApplication {
public var isSplitOrSlideOver: Bool {
guard let w = self.delegate?.window, let window = w else { return false }
return !window.frame.equalTo(window.screen.bounds)
}
}
then you can just
UIApplication.shared.isSplitOrSlideOver in SwiftUIApplication.sharedApplication.isSplitOrSlideOver in Objective-CNote that, in Swift, the window object is a double optional... WTF!
For iOS 13+ (note, I haven't tested the iOS 13 code myself yet)
extension UIApplication {
public var isSplitOrSlideOver: Bool {
guard let window = self.windows.filter({ $0.isKeyWindow }).first else { return false }
return !(window.frame.width == window.screen.bounds.width)
}
}
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
}
}
I recently had to determine display style of an application based including, not only if it changed to split view or slide-over, but also what portion of the screen was being utilized for the application (full, 1/3, 1/2, 2/3). Adding this to a ViewController subclass was able to solve the issue.
/// Dismisses this ViewController with animation from a modal state.
func dismissFormSheet () {
dismissViewControllerAnimated(true, completion: nil)
}
private func deviceOrientation () -> UIDeviceOrientation {
return UIDevice.currentDevice().orientation
}
private func getScreenSize () -> (description:String, size:CGRect) {
let size = UIScreen.mainScreen().bounds
let str = "SCREEN SIZE:\nwidth: \(size.width)\nheight: \(size.height)"
return (str, size)
}
private func getApplicationSize () -> (description:String, size:CGRect) {
let size = UIApplication.sharedApplication().windows[0].bounds
let str = "\n\nAPPLICATION SIZE:\nwidth: \(size.width)\nheight: \(size.height)"
return (str, size)
}
func respondToSizeChange (layoutStyle:LayoutStyle) {
// Respond accordingly to the change in size.
}
enum LayoutStyle: String {
case iPadFullscreen = "iPad Full Screen"
case iPadHalfScreen = "iPad 1/2 Screen"
case iPadTwoThirdScreeen = "iPad 2/3 Screen"
case iPadOneThirdScreen = "iPad 1/3 Screen"
case iPhoneFullScreen = "iPhone"
}
private func determineLayout () -> LayoutStyle {
if UIDevice.currentDevice().userInterfaceIdiom == .Phone {
return .iPhoneFullScreen
}
let screenSize = getScreenSize().size
let appSize = getApplicationSize().size
let screenWidth = screenSize.width
let appWidth = appSize.width
if screenSize == appSize {
return .iPadFullscreen
}
// Set a range in case there is some mathematical inconsistency or other outside influence that results in the application width being less than exactly 1/3, 1/2 or 2/3.
let lowRange = screenWidth - 15
let highRange = screenWidth + 15
if lowRange / 2 <= appWidth && appWidth <= highRange / 2 {
return .iPadHalfScreen
} else if appWidth <= highRange / 3 {
return .iPadOneThirdScreen
} else {
return .iPadTwoThirdScreeen
}
}
override func traitCollectionDidChange(previousTraitCollection: UITraitCollection?) {
super.traitCollectionDidChange(previousTraitCollection)
respondToSizeChange(determineLayout())
}
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)
}
}
Here is a simpler and less fragile way with no constants, that I use in an iPhone/iPad iOS app.
This code also distinguishes between slide over and split view.
I'm returning String values here for clarity, feel free to use enum values and to merge the two cases of fullscreen as suits your app.
func windowMode() -> String {
let screenRect = UIScreen.main.bounds
let appRect = UIApplication.shared.windows[0].bounds
if (UIDevice.current.userInterfaceIdiom == .phone) {
return "iPhone fullscreen"
} else if (screenRect == appRect) {
return "iPad fullscreen"
} else if (appRect.size.height < screenRect.size.height) {
return "iPad slide over"
} else {
return "iPad split view"
}
}
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.
The horizontal size class will be compact when in slide over or 33% split view. I don't think you can detect once you go to 50% or 66% though.
I made an edit to @Michael Voccola solution which fixed the problem for orientation
I used this way in my situation to detect all iPad split screen state and handling layout
Just call determineLayout() to get current layoutStyle
private func getScreenSize() -> CGRect {
let size = UIScreen.main.bounds
return size
}
private func getApplicationSize() -> CGRect {
let size = UIApplication.shared.windows[0].bounds
return size
}
enum LayoutStyle: String {
case iPadFullscreen = "iPad Full Screen"
case iPadHalfScreen = "iPad 1/2 Screen"
case iPadTwoThirdScreeen = "iPad 2/3 Screen"
case iPadOneThirdScreen = "iPad 1/3 Screen"
case iPhoneFullScreen = "iPhone"
}
func determineLayout() -> LayoutStyle {
if UIDevice.current.userInterfaceIdiom == .phone {
return .iPhoneFullScreen
}
let screenSize = getScreenSize().size
let appSize = getApplicationSize().size
let screenWidth = screenSize.width
let appWidth = appSize.width
if screenSize == appSize {
// full screen
return .iPadFullscreen
}
let persent = CGFloat(appWidth / screenWidth) * 100.0
if persent <= 55.0 && persent >= 45.0 {
// The view persent between 45-55 that's mean it's half screen
return .iPadHalfScreen
} else if persent > 55.0 {
// more than 55% that's mean it's 2/3
return .iPadTwoThirdScreeen
} else {
// less than 45% it's 1/3
return .iPadOneThirdScreen
}
}
extension UIApplication {
func isRunningInFullScreen() -> Bool {
if let w = UIApplication.shared.connectedScenes
.filter({$0.activationState == .foregroundActive})
.compactMap({$0 as? UIWindowScene})
.first?.windows
.filter({$0.isKeyWindow}).first {
let maxScreenSize = max(UIScreen.main.bounds.size.width, UIScreen.main.bounds.size.height)
let minScreenSize = min(UIScreen.main.bounds.size.width, UIScreen.main.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
}
}
here is the code for those who don't want to see swift lint complaints for deprecated keyWindow
There is project on GitHub AbsoluteFrameDemo which uses AppAbsoluteFrame module. You can use it to detect absolute frame of your app. Also you can add this extension to get application multitasking mode:
extension AppAbsoluteFrame {
enum AppMode {
case fullscreen, slideOver, splitScreen
init(frame: CGRect, screenBounds: CGRect) {
let appHasSameHeight = frame.height == screenBounds.height
let appHasSameWidth = frame.width == screenBounds.width
switch (appHasSameHeight, appHasSameWidth) {
case (true, true):
self = .fullscreen
case (true, false):
self = .splitScreen
case (false, _):
self = .slideOver
}
}
}
var appMode: AppMode {
AppMode(frame: frame, screenBounds: screenBounds)
}
}
The module needs UIWindowScene to identify the exact window and its mode.
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!
Adding to @Tamas's answer:
Here is the code snippet that will automatically maintain this flag irrespective of rotation.
-(void)traitCollectionDidChange:(UITraitCollection *)previousTraitCollection
{
// simply create a property of 'BOOL' type
isRunningInFullScreen = CGRectEqualToRect([UIApplication sharedApplication].delegate.window.frame, [UIApplication sharedApplication].delegate.window.screen.bounds);
}
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;
And I'm really late to the party! But nonetheless, here's a simple, swifty solution to the problem. Using let width = UIScreen.mainScreen().applicationFrame.size.width we can detect the width of my app's window, and then have things occur when it is smaller than a certain number (i.e. on iPhone screen or in split view), useful to make different things happen on smaller screens. To have the computer check the width over and over again, we can run an NSTimer every hundredth of a second, then do stuff if the width is higher/lower than something.
Some measurements for you (you have to decide what width to make stuff occur above/below):
iPhone 6S Plus: 414.0mm
iPhone 6S: 375.0mm
iPhone 5S: 320.0mm
iPad (portrait): 768.0mm
iPad (1/3 split view): 320.0mm
iPad Air 2 (1/2 split view): 507.0mm
iPad (landscape): 1024.0mm
Here's a code snippet:
class ViewController: UIViewController {
var widthtimer = NSTimer()
func checkwidth() {
var width = UIScreen.mainScreen().applicationFrame.size.width
if width < 507 { // The code inside this if statement will occur if the width is below 507.0mm (on portrait iPhones and in iPad 1/3 split view only). Use the measurements provided in the Stack Overflow answer above to determine at what width to have this occur.
// do the thing that happens in split view
textlabel.hidden = false
} else if width > 506 {
// undo the thing that happens in split view when return to full-screen
textlabel.hidden = true
}
}
override func viewDidAppear(animated: Bool) {
widthtimer = NSTimer.scheduledTimerWithTimeInterval(0.01, target: self, selector: "checkwidth", userInfo: nil, repeats: true)
// runs every hundredth of a second to call the checkwidth function, to check the width of the window.
}
override func viewDidDisappear(animated: Bool) {
widthtimer.invalidate()
}
}
I hope this can help anyone who comes peeking!
By using below code you can check splitViewController is Collapsed or Not
if splitViewController?.isCollapsed ?? false {
// splitview collapsed
} else {
// splitview not collapsed
}
