Disabling rotation for current screen?

Question

Is it possible to enable/disable rotation parameter for current screen or this property is for all application?

Answer 1

Sure:

- (BOOL)shouldAutorotate
{
    return YES;
}

- (NSUInteger)supportedInterfaceOrientations
{
    //Choose your available orientation, you can also support more tipe using the symbol |
    //e.g. return (UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight)
    return (UIInterfaceOrientationMaskPortrait);
}

Answer 2

If you have multiple ViewControllers within a NavigationController, and you wish to disable rotation in one of them only, you need to set and control rotation within ApplicationDelegate. Here is how to do it in Swift...

In AppDelegate.swift:

class AppDelegate: UIResponder, UIApplicationDelegate {


var blockRotation: Bool = false

func application(application: UIApplication, supportedInterfaceOrientationsForWindow window: UIWindow?) -> Int {

    if (self.blockRotation) {
        println("supportedInterfaceOrientations - PORTRAIT")
        return Int(UIInterfaceOrientationMask.Portrait.rawValue)
    } else {
        println("supportedInterfaceOrientations - ALL")
        return Int(UIInterfaceOrientationMask.All.rawValue)
    }
}

In the ViewController that you want to block rotation, add UIApplicationDelegate to your class...

class LoginViewController: UIViewController, UITextFieldDelegate, UIApplicationDelegate {

and then create a reference to the AppDelegate...

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

In viewDidLoad, set appDelegate.blockRotation = true:

override func viewDidLoad() {
    super.viewDidLoad()

    // Do any additional setup after loading the view.

    appDelegate.blockRotation = true

}

In viewWillAppear, set the orientation to force the device to the chosen orientation (Portrait in this example):

override func viewWillAppear(animated: Bool) {

    let value = UIInterfaceOrientation.Portrait.rawValue
    UIDevice.currentDevice().setValue(value, forKey: "orientation")

}

Then in viewWillDisappear, or in prepareForSegue, set appDelegate.blockRotation = false:

override func viewWillDisappear(animated: Bool) {
    appDelegate.blockRotation = false
}

This will block rotation in the one view controller within a Navigation Controller that contains multiple ViewControllers. Hope this helps.