ios - 我没有在 pod 'DropDown' 中得到我选择的值

Question

我已经在我的项目中安装了 pod 'DropDown'。当我按下按钮时，它会显示带有月份列表的下拉菜单，当我从列表中选择月份时，它应该显示在按钮的位置，就像每个下拉菜单一样有效，但我无法获得我选择的值。按钮空间保持空白。

var dropDown = DropDown()

@IBAction func dropDownButtonTapped(_ sender: UIButton) {

    dropDown.anchorView = dropDownButton

    dropDown.dataSource = ["1","2","3","4","1","2","3","4"]
    dropDown.show()

    dropDown.selectionAction = { [unowned self] (index: Int, item: String) in
        print("Selected item: \(item) at index: \(index)")
    }

    dropDown.direction = .bottom

}

Answer 1

您需要创建 UIButton 的 outlet 或从方法参数 sender 获取按钮。

下面我创建了 socket ，并在 dropDown.selectionAction 中设置了选择时的按钮标题。

class ViewController: UIViewController {

let dropDown = DropDown()
@IBOutlet weak var menuButton: UIButton!

override func viewDidLoad() {
    super.viewDidLoad()
    dropDown.anchorView = menuButton
    dropDown.dataSource = ["1","2","3","4","1","2","3","4"]

}

@IBAction func dropDownButtonTapped(_ sender: UIButton) {
    dropDown.show()
    dropDown.selectionAction = { [unowned self] (index: Int, item: String) in
        print("Selected item: \(item) at index: \(index)")
        self.menuButton.setTitle(item,for: .normal)
    }
}
}

干杯!