Swift显示alert和promp confirmation

Swift 显示alert

func Alert(title:String, msg:String)->Void{
        let alert = UIAlertController(title: title, message: msg, preferredStyle: UIAlertControllerStyle.alert)
        alert.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil))
        self.present(alert, animated: true, completion: nil)
    }

Swift 显示confirmation

let refreshAlert = UIAlertController(title: "", message: "Are you sure to continue?".localized(), preferredStyle: UIAlertControllerStyle.alert)

            refreshAlert.addAction(UIAlertAction(title: "Yes".localized(), style: .default, handler: { (action: UIAlertAction!) in
                // Cancel leave
                let result = ServiceProxy().CallCancelLeave(leaveId: self._leave.id)
                if(!result.isSuccess){
                    self.Alert(title: "Error".localized(), msg: result.errorMessage)
                }else{
                    // do nothing and navigate to the list view
                }
            }))

            refreshAlert.addAction(UIAlertAction(title: "No".localized(), style: .cancel, handler: { (action: UIAlertAction!) in
                // do nothing
            }))
            present(refreshAlert, animated: true, completion: nil)