swift4 滑动菜单
swift4 scroll menus
实现思路介绍： https://www.jianshu.com/p/3ef5575fb6f7
1.滑动菜单View，支持滑动，点击切换，不依赖任何三方，纯手工计算。
- Scroll menu View, support slider, click to change. Don't rely on any sdk.
2.支持cocoa pods
- Support cocoa pods
platform :ios, '9.0' inhibit_all_warnings!
target '你的项目名字' do use_frameworks!
pod 'ScrollMenusView'
end
- 支持左图右文的菜单，初始化使用：
- Support menu of left image and right text.
public init(titles: [MenuModel], frame: CGRect, menuHeight: CGFloat = 44)
- 支持纯文字菜单，初始化使用：
- Also support only text menus. You can user the below func to init.
public init(titles: [String], frame: CGRect, menuHeight: CGFloat = 44)
- 支持动态修改某个位置上的菜单文字和图片
- Support Modify the menu at index .
/// 更改菜单(change menu at index)
///
/// - Parameters:
/// - menu: 要替换的菜单(the menu will be set)
/// - index: 要被替换的位置(the index will be set new menu)
public func change(menu: MenuModel, index: Int)
或者
public func change(title: String, index: Int)
使用cocoa pods示例：
The demo of user cocoa pods to support ScrollMenusView.
import UIKit import ScrollMenusView
class ViewController: UIViewController {
private var menus: [MenuModel] = []
override func viewDidLoad() {
super.viewDidLoad()
setup()
}
private func setup() {
let menu1 = MenuModel(title: "菜单一",
imageNormal: nil,
imageSelected: nil)
let menu2 = MenuModel(title: "123",
imageNormal: nil,
imageSelected: nil)
let menu3 = MenuModel(title: "我是好孩子",
imageNormal: nil,
imageSelected: nil)
menus = [menu1, menu2, menu3]
let frame = CGRect(x: 0,
y: 20,
width: view.bounds.size.width,
height: view.bounds.size.height - 20)
let menu = ScrollMenus(titles: menus,
frame: frame,
menuHeight: 44)
view.addSubview(menu)
menu.dataSource = self
menu.delegate = self
}
}
extension ViewController: ScrollMenusDataSource {
func menuViewViewForItems(atIndex: Int) -> UIView {
return UIView()
}
}
extension ViewController: ScrollMenusDelegate {
func menuDidChange(currentIndex: Int) {
print("index = \(currentIndex)")
}
}
效果图：
不使用cocoa pods，直接导入到项目中，示例：
import UIKit
class ViewController: UIViewController {
@IBOutlet weak var menuView: UIView!
private var menus: [MenuModel] = []
private var scrollMenu: ScrollMenus?
private var childs: [UIViewController] = [FirstViewController.instance(),
SecondViewController.instance(),
ThirdViewController.instance()]
override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?) {
super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
childs.forEach { addChildViewController($0) }
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
childs.forEach { addChildViewController($0) }
}
override func viewDidLoad() {
super.viewDidLoad()
setup()
}
private func setup() {
let menu1 = MenuModel(title: "购买记录",
imageNormal: nil,
imageSelected: nil)
let menu2 = MenuModel(title: "680人",
imageNormal: #imageLiteral(resourceName: "personNumber_normal"),
imageSelected: #imageLiteral(resourceName: "personNumber_selected"))
let menu3 = MenuModel(title: "商品详情",
imageNormal: nil,
imageSelected: nil)
menus = [menu1, menu2, menu3]
let menu = ScrollMenus(titles: menus,
frame: menuView.bounds,
menuHeight: 44)
menu.dataSource = self
menu.delegate = self
menu.set(selected: 1)
menu.lineColor = #colorLiteral(red: 0.8078431487, green: 0.02745098062, blue: 0.3333333433, alpha: 1)
menu.textColor = #colorLiteral(red: 0.6000000238, green: 0.6000000238, blue: 0.6000000238, alpha: 1)
menu.textSeletedColor = #colorLiteral(red: 0.8078431487, green: 0.02745098062, blue: 0.3333333433, alpha: 1)
menuView.addSubview(menu)
scrollMenu = menu
}
/// 更改菜单
@IBAction func changeMenu(_ sender: Any) {
let menu = MenuModel(title: "改变的菜单", imageNormal: nil, imageSelected: nil)
scrollMenu?.change(menu: menu, index: 0)
}
}
extension ViewController: ScrollMenusDataSource {
func menuViewViewForItems(atIndex: Int) -> UIView {
guard atIndex < menus.count, atIndex < childs.count else {
return UIView()
}
return childs[atIndex].view
}
}
extension ViewController: ScrollMenusDelegate {
func menuDidChange(currentIndex: Int) {
print("------------ \(currentIndex)")
}
}