Problem with simple UIRotationGestureRecognizer

[Zipette]

Hello,

I want to use the UIRotationGestureRecognizer to rotate an UIView with two fingers on the IOS simulator, here is my Swift code in ViexController:

import UIKit

class ViewController: UIViewController {

    @IBOutlet weak var myView: UIImageView!

    override func viewDidLoad() {

        super.viewDidLoad()

        let gestureRec = UIRotationGestureRecognizer()

        gestureRec.addTarget(myView, action: "rotate:")

        myView.addGestureRecognizer(gestureRec)

        myView.userInteractionEnabled = true

        myView.multipleTouchEnabled = true

    }

    func rotate(sender:UIRotationGestureRecognizer)

    {

        myView.transform=CGAffineTransformRotate(myView.transform, sender.rotation)

        sender.rotation=0

        println("ok !")

    }

Unfortunatly this code doesn't work for a raison I can't find, could someone help me ?

Thks in advance.
Zipette

[Sam Stigler]

It looks like you're not using the designated initializer for that class. Have you tried with that to see if it makes a difference?

Sam

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[Zipette]

Hello SAm,

Thks for your answer. How do I invoke the designated initializer for this class ?

Thks.

[Sam Stigler]

Hi Zipette,

Check in the documentation for the superclass. In this case, the superclass is UIGestureRecognizer, and its designated initializer is init(target target: AnyObject,
     action action: Selector) . It should show up in Xcode's autocomplete menu if you type in UIRotationGestureRecognizer( .

Sam

To view this discussion on the web visit https://groups.google.com/d/msgid/swift-language/7745147a-7551-4935-bbcc-aa1ea7bc5860%40googlegroups.com.