Swift UIAlertController -> ActionSheet iPad iOS8 Crashes

Question

currently i\'m running into big trouble with my ActionSheet. On iPhone it works great, but on iPad it only crashes

I create a new project with only one button

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Answer 1

If you want show your alert in center and no arrow, I tryed this, it works on iOS 11.2

swift 4.2 version:

let actionSheet = UIAlertController ......
if ( UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiom.pad ){

        if let currentPopoverpresentioncontroller = actionSheet.popoverPresentationController{
            currentPopoverpresentioncontroller.permittedArrowDirections = []
            currentPopoverpresentioncontroller.sourceRect = CGRect(x: (self.view.bounds.midX), y: (self.view.bounds.midY), width: 0, height: 0)
            currentPopoverpresentioncontroller.sourceView = self.view
            self.present(actionSheet, animated: true, completion: nil)
        }
    }else{
        self.present(actionSheet, animated: true, completion: nil)
    }

Objective C version:

UIAlertController* actionSheet 
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
    NSArray *empty;
    UIPopoverPresentationController *currentPopOverPresentationController = [actionSheet popoverPresentationController];
    currentPopOverPresentationController.permittedArrowDirections = empty;
    currentPopOverPresentationController.sourceRect = CGRectMake(CGRectGetMidX(self.view.bounds), CGRectGetMidY(self.view.bounds), 0, 0);
    currentPopOverPresentationController.sourceView = self.view;

    [self presentViewController:actionSheet animated:YES completion:nil];
}else{
    [self presentViewController:actionSheet animated:YES completion:nil];
}