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

If you don't need presenting the alert as popover, you can simply use UIAlertController.Style.alert as preferred style, when initializing AlertViewController.

let shareMenu = UIAlertController(title: nil, message: "Share using", preferredStyle: .alert)

Answer 2

for iOS 13

used it.

 if #available(iOS 13.0, *) {
            if let popoverPresentationController = actionSheet.popoverPresentationController {
                popoverPresentationController.sourceView = self.view
                popoverPresentationController.sourceRect = sender.frame
            }
            self.present(actionSheet, animated: true, completion: nil)
        } else {
            actionSheet.popoverPresentationController?.sourceView = self.view
            actionSheet.popoverPresentationController?.sourceRect = sender.frame

            actionSheet.show()
        }

Answer 3

try this code:

shareMenu.popoverPresentationController.sourceView = self.view
shareMenu.popoverPresentationController.sourceRect = CGRectMake(self.view.bounds.size.width / 2.0, self.view.bounds.size.height / 2.0, 1.0, 1.0)

self.presentViewController(shareMenu, animated: true, completion: nil)

Answer 4

Swift 4

popoverPresentationController.permittedArrowDirections = .init(rawValue: 0)
popoverPresentationController.sourceView = self.view
popoverPresentationController.sourceRect = CGRect(x: self.view.bounds.midX, y: self.view.bounds.midY, width: 0, height: 0)

Answer 5

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
    }

}

Answer 6

Swift 3

shareMenu.popoverPresentationController?.sourceView = self.view
shareMenu.popoverPresentationController?.sourceRect = 
    CGRect(x: view.bounds.size.width, 
           y: view.bounds.size.height-80, 
           width: 1.0, height: 1.0)

source rect is the point from were you want to show popover view.