UIAlertController is Crashed (iPad)

Question

I am using Xcode 6 to develop an iOS Application.

When I used UIAlertController, it can be worked well on iPhone 6 simulator, but crashes on iPad simula

Answer 1

I use this handy extension to create action sheets that never crash

extension UIAlertController {

    class func actionSheetWith(title: String?, message: String?, sourceView: UIView?, sourceFrame: CGRect?) -> UIAlertController {
        let actionController = UIAlertController(title: title, message: message, preferredStyle: .actionSheet)
        if actionController.responds(to: #selector(getter: popoverPresentationController)) {
            actionController.popoverPresentationController?.sourceView = sourceView ?? StoryboardHelper.tabBarControllerTopController()?.view
            actionController.popoverPresentationController?.sourceRect = sourceFrame ?? CGRect(x: 0, y: 0, width: 0, height: 0)
        }
        return actionController
    }

}