How to rotate orientation programmatically in Swift?

To change orientation programatically in swift 3, use the following way:

let value = UIInterfaceOrientation.landscapeRight.rawValueUIDevice.current.setValue(value, forKey: "orientation")

You can use the orientations,

1. portrait2. portraitUpsideDown3. landscapeLeft4. landscapeRight

Swift 4:

Step1:

In Appdelegate - Declare deviceOrientation var which is portrait by default

import UIKitlet appDelegate = UIApplication.shared.delegate as! AppDelegate@UIApplicationMainclass AppDelegate: UIResponder, UIApplicationDelegate {    var window: UIWindow?    var deviceOrientation = UIInterfaceOrientationMask.portrait    func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask {        return deviceOrientation    }}

Step 2:

In your certain ViewController write this to change orientation -

 override func viewWillAppear(_ animated: Bool) {     appDelegate.deviceOrientation = .landscapeLeft     let value = UIInterfaceOrientation.landscapeLeft.rawValue     UIDevice.current.setValue(value, forKey: "orientation") } 

You can override UIViewController.supportedInterfaceOrientations() instead of triggering rotation in viewWillAppear

For Xcode 7

override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {    return UIInterfaceOrientationMask.Landscape}

For Xcode 6

override func supportedInterfaceOrientations() -> Int {    return Int(UIInterfaceOrientationMask.Landscape.rawValue)}

And make sure the desired orientations are enabled in project settings.