class TodoTableViewController: UITableViewController {

    struct Todo {
        let description : String
        var isDone : Bool = false
        init(description:String) {
            self.description = description
        }
    }

    var todoList = [Todo]()

    func touchedAdd() {
        let alertController = UIAlertController(title: "ToDo", message: "할 일을 입력해 주세요.", preferredStyle: UIAlertControllerStyle.Alert)
        let cancelAction = UIAlertAction(title: "취소", style: UIAlertActionStyle.Cancel, handler:nil)
        let addAction = UIAlertAction(title: "추가", style: UIAlertActionStyle.Default, handler: { (alertAction) in
            if let text = alertController.textFields?.first?.text {
                if( text.characters.count>0 ){
                    self.todoList.append(Todo(description: text))
                    self.tableView.reloadData()
                }
            }
        })

        alertController.addTextFieldWithConfigurationHandler(nil)
        alertController.addAction(cancelAction)
        alertController.addAction(addAction)

        presentViewController(alertController, animated: true, completion: nil)
    }

    // 생략
}