Force landscape mode in one ViewController using Swift

Question

I am trying to force only one view in my application on landscape mode, I am calling

override func shouldAutorotate() -> Bool {
    print(\"shouldAutoro         


        

Answer 1

In ViewController in viewDidLoad Method call below function

func rotateDevice(){
    UIDevice.current.setValue(UIInterfaceOrientation.landscapeLeft.rawValue, forKey: "orientation")
    UIView.setAnimationsEnabled(true) // while rotating device it will perform the rotation animation
}`

App Delegate File Add Below Function & Variables

//Orientation Variables
var orientationLock = UIInterfaceOrientationMask.portrait
var myOrientation: UIInterfaceOrientationMask = .portrait

func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask { return .landscape }

Answer 2

I needed to force one controller into portrait orientation. Adding this worked for me.

swift 4 with iOS 11

override var   supportedInterfaceOrientations : UIInterfaceOrientationMask{

    return  .portrait

}

Answer 3

It may be useful for others, I found a way to force the view to launch in landscape mode:

Put this in the viewDidLoad():

let value = UIInterfaceOrientation.landscapeLeft.rawValue
UIDevice.current.setValue(value, forKey: "orientation")

and,

override var shouldAutorotate: Bool {
    return true
}

Answer 4

According to the documentation of supportedInterfaceOrientations the shouldAutorotate method should return true or YES in Objective-C so that the supportedInterfaceOrientations are considered.

Answer 5

Swift 4 , Tested in iOS 11

You can specify the orientation in projectTarget -> General -> DeploymentInfo(Device Orientation) -> Portrait (Landscapeleft and Landscaperight are optional)

AppDelegate

    var myOrientation: UIInterfaceOrientationMask = .portrait
    func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask {
        return myOrientation
    }

LandScpaeViewController

override func viewDidLoad() {
        super.viewDidLoad()
        let appDelegate = UIApplication.shared.delegate as! AppDelegate
        appDelegate.myOrientation = .landscape
}

OnDismissButtonTap

let appDelegate = UIApplication.shared.delegate as! AppDelegate
 appDelegate.myOrientation = .portrait

Thats it. :)

Answer 6

In AppDelegate add this:

//Orientation Variables
var myOrientation: UIInterfaceOrientationMask = .portrait

func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask {
    return myOrientation  
}

Add this in viewController, that want to change orientation:

override func viewDidLoad() {
        super.viewDidLoad()
        self.rotateToLandsScapeDevice()
    }

    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        self.rotateToPotraitScapeDevice()
    }

    func rotateToLandsScapeDevice(){
        let appDelegate = UIApplication.shared.delegate as! AppDelegate
        appDelegate.myOrientation = .landscapeLeft
        UIDevice.current.setValue(UIInterfaceOrientation.landscapeLeft.rawValue, forKey: "orientation")
        UIView.setAnimationsEnabled(true)
    }

    func rotateToPotraitScapeDevice(){
        let appDelegate = UIApplication.shared.delegate as! AppDelegate
        appDelegate.myOrientation = .portrait
        UIDevice.current.setValue(UIInterfaceOrientation.portrait.rawValue, forKey: "orientation")
        UIView.setAnimationsEnabled(true)
    }