SwiftDropMenuView
一个自定义下拉菜单的实现，可用于一些筛选菜单。
GitHub: https://github.com/tuxi/SwiftDropMenuView
自定义菜单SwiftDropMenuControl.png
截屏2021-07-25 上午10.20.06.png
根据项目中经常使用的几种情况（比如地图上的范围筛选、商品的分类及价格筛选等等），封装的下拉菜单，可查看示例了解其使用原理
已实现两种菜单：
- 1.通用的下拉菜单
SwiftDropMenuControl，可通过初始化方法中传入listView自定义其展开内容
func createMenuControl() {
/// 使用`frame`方式
let menuControl = SwiftDropMenuControl(frame: CGRect(x: 100, y: 280, width: 120, height: 44), listView: MapFilterDropMenuListView())
menuControl.setTitle("自定义菜单", for: .normal)
menuControl.setTitleColor(.gray, for: .normal)
menuControl.setTitleColor(.gray, for: .normal)
menuControl.setTitleColor(.red, for: .selected)
menuControl.setImage(UIImage(named: "icon_sort_arrow_down_1"), for: .normal)
menuControl.setImage(UIImage(named: "icon_sort_arrow_up_1"), for: .selected)
menuControl.contentHorizontalAlignment = .right
menuControl.contentEdgeInsets = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 50)
menuControl.animateDuration = 0.1
menuControl.delegate = self
menuControl.sizeToFit()
self.view.addSubview(menuControl)
}
-
SwiftDropMenuListView是基于SwiftDropMenuControl，使用CollectionView作为下拉菜单的listView的下拉菜单
-
func createMenuListView() {
let menuView = SwiftDropMenuListView(frame: .zero)
menuView.setTitle("menu", for: .normal)
self.view.addSubview(menuView)
menuView.delegate = self
menuView.dataSource = self
menuView.backgroundColor = UIColor.orange
menuView.translatesAutoresizingMaskIntoConstraints = false
menuView.centerYAnchor.constraint(equalTo: self.view.centerYAnchor, constant: 60.0).isActive = true
menuView.centerXAnchor.constraint(equalTo: self.view.centerXAnchor).isActive = true
menuView.heightAnchor.constraint(equalToConstant: 40.0).isActive = true
menuView.widthAnchor.constraint(equalTo: self.view.widthAnchor, multiplier: 0.6).isActive = true
}
通过SwiftDropMenuControl的show()和dismiss()方法，展开和收起下拉菜单，通常情况，我们不需要主动调用show ()展开菜单，因为在用户点击SwiftDropMenuControl时，show()方法会被执行，如果你不需要点击时展开，可实现代理方法`shouldTou
下拉菜单展开或收起的代理方法
/// 反内容馈显示或消失的回调
public protocol SwiftDropMenuControlContentAppearable {
func on(appear element: SwiftDropMenuControl.AppearElement, forDropMenu menu: SwiftDropMenuControl)
}
@objc public protocol SwiftDropMenuControlDelegate: NSObjectProtocol {
@objc optional func shouldTouchMe(forDropMenu menu: SwiftDropMenuControl) -> Bool
}
