如何使用Swift 5使用DropDown实现多选？

问题描述

这是单选的当前操作，请提出一种使用DropDown实现多选的方法，我的Xcode版本是10

empProfLeaveDropDown.selectionAction = { [unowned self] (index: Int,item: String) in
             print("Selected item: \(item) at index: \(index)")
             self.leaveTypeLabel1.text = item
    }

解决方法

Here you go,create instance of this class and use class methods for single selection and multi selection dropdown,for best practices I also added reusable view class for sample