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ios - What is the best way to hand action sheet action with UITableview Longpress on Ipad

I have a tableview that present an alert when long pressed. It work fine on the iphone but on ipad I get the popover error. The problem is that the table is not a button and i have no button on the cell what is the best way to work around this? Please take a look at my code.

 func ipadPresentationAlert(button:UIButton, alertController:UIAlertController){
        if ( UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiom.pad ){
            if let currentPopoverpresentioncontroller = alertController.popoverPresentationController{
                currentPopoverpresentioncontroller.sourceView = button
                currentPopoverpresentioncontroller.sourceRect = button.bounds;
                currentPopoverpresentioncontroller.permittedArrowDirections = UIPopoverArrowDirection.up;
                self.present(alertController, animated: true, completion: nil)
            }
        }else{
            self.present(alertController, animated: true, completion: nil)
        }
    }
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You can replace your button by yourCell.

button:UIButton -> cell: UITableViewCell

On iPad, ActionSheet need a sourceView to be showed, so you can place your cell here as a fulcrum.

currentPopoverpresentioncontroller.sourceView = cell

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