我们先看看实现功能
![Swift快速集成控件篇(DopDropDownMenu[二级菜单])第三方控件_第1张图片](http://img.e-com-net.com/image/info10/9e49a5bedc74418d9aeecf51b9bec2fd.gif)
二级菜单.gif
首先先感谢作者提供的源码
(https://github.com/12207480/DOPDropDownMenu-Enhanced)
本源码不是我写的，只是我在他源码的功能上进行了代码封装以便更直观
//需要继承已写好的类
class aadViewController: ScreeningViewController {
override func viewDidLoad() {
super.viewDidLoad()
SelectedCallBackValue() //选中的必包回调
let mol = MenuModel()
for i:Int in 0 ..< 25 { //第一个菜单
let Onemol=OneMenuModel()
Onemol.name="区域\(i)"
Onemol.value=i.description
if(i<5){
Onemol.image="aeroplane"
for l:Int in 0 ..< 50 {
let Towmol=TowMenuModel()
Towmol.name="朝阳\(l)"
Towmol.value=i.description
if(l==2){
Towmol.name="中心"
Towmol.image="aeroplane"
Towmol.value="123"
}
if(l==3){
Towmol.name="其他"
Towmol.image="add-circular"
Towmol.value="321"
}
Onemol.TowMenu.append(Towmol) //添加二级菜单值
}
}
mol.OneMenu.append(Onemol)
}
AddMenuData(mol) //新增
let mol1 = MenuModel()
for i:Int in 0 ..< 3 {
let Onemol=OneMenuModel()
Onemol.name="价格\(i)"
if(i>=1){
Onemol.name="1000\(i)"
}
Onemol.value=i.description
mol1.OneMenu.append(Onemol)
}
AddMenuData(mol1)
let mol2 = MenuModel()
for i:Int in 0 ..< 3 {
let Onemol=OneMenuModel()
Onemol.name="户型\(i)"
Onemol.value=i.description
mol2.OneMenu.append(Onemol)
}
AddMenuData(mol2)
let mol3 = MenuModel()
for i:Int in 0 ..< 3 {
let Onemol=OneMenuModel()
Onemol.name="面积\(i) "
Onemol.value=i.description
mol3.OneMenu.append(Onemol)
}
AddMenuData(mol3)
menureloadData() //刷新菜单 (每次加载完数据后都需要刷新
}
func SelectedCallBackValue(){
//选中的必包回调
self.Callback_SelectedValue { (name, value) in
print(name,value)
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
ScreeningViewController 类
import UIKit
import DOPDropDownMenu_Enhanced
class OneMenuModel { //一级菜单属性
///标题名称（名称不可重复)
var name:String?
///值 id (值不可重复)
var value:String?
///图片
var image:String?
var TowMenu = [TowMenuModel]()
}
class TowMenuModel { //二级菜单属性
///标题名称（名称不可重复)
var name:String?
///值 id (值不可重复)
var value:String?
///图片
var image:String?
}
class MenuModel { //对象集合
var OneMenu = [OneMenuModel]()
}
class ScreeningViewController: UIViewController,DOPDropDownMenuDataSource,DOPDropDownMenuDelegate {
typealias CallbackSelectedValue=(name:String,value:String)->Void
//声明一个闭包
private var myCallbackValue:CallbackSelectedValue?
//下面这个方法需要传入上个界面的函数指针
func Callback_SelectedValue(value:CallbackSelectedValue?){
//将函数指针赋值给闭
myCallbackValue = value
}
var menu = DOPDropDownMenu() // 菜单
private var index=0 //第一次加载数据的索引
private var isLoadMenu=false //是否加载菜单完成？
private var _MenuValue = [MenuModel]() //菜单数据模型
func AddMenuData(model:MenuModel){
_MenuValue.append(model)
}
override func viewDidLoad() {
super.viewDidLoad()
menu = DOPDropDownMenu(origin: CGPoint(x: 0,y:self.navigationController == nil ? 0:CommonFunction.NavigationControllerHeight), andHeight: 44)
menu.isClickHaveItemValid=true
menu.delegate=self
menu.dataSource=self
self.view.addSubview(menu)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func menureloadData() {
menu.reloadData()
}
//返回当前显示的MenuTitle列总数
func numberOfColumnsInMenu(menu: DOPDropDownMenu!) -> Int {
return _MenuValue.count
}
// 返回 menu 第column列有多少行 （一级
func menu(menu: DOPDropDownMenu!, numberOfRowsInColumn column: Int) -> Int {
if(column>=0){
let value = _MenuValue[column]
return value.OneMenu.count
}
return 0
}
// 返回 menu 第column列 每行title （一级
func menu(menu: DOPDropDownMenu!, titleForRowAtIndexPath indexPath: DOPIndexPath!) -> String! {
if(isLoadMenu){
//每当点击菜单的时候
let title = _MenuValue[indexPath.column]
if(title.OneMenu[indexPath.row].name=="" ||
title.OneMenu[indexPath.row].name==nil){
return "无数据"
}
else{
return title.OneMenu[indexPath.row].name //把点击菜单的OneMenu全部显示出来
}
}
//第一次加载菜单的时候
let title = _MenuValue[index]
index+=1
if(index==_MenuValue.count){
isLoadMenu=true
}
return title.OneMenu[0].name //添加数据显示 (显示第一个onemenu)
}
// 返回 menu 第column列有多少行 （二级
func menu(menu: DOPDropDownMenu!, numberOfItemsInRow row: Int, column: Int) -> Int {
let value = _MenuValue[column]
if(value.OneMenu[row].TowMenu.count==0){
return -1
}
return value.OneMenu[row].TowMenu.count
}
// 返回 menu 第column列 每行title （二级
func menu(menu: DOPDropDownMenu!, titleForItemsInRowAtIndexPath indexPath: DOPIndexPath!) -> String! {
let title = _MenuValue[indexPath.column]
if(title.OneMenu[indexPath.row].TowMenu[indexPath.row].name=="" ||
title.OneMenu[indexPath.row].TowMenu[indexPath.row].name==nil){
return "无数据"
}
else{
let value = title.OneMenu[indexPath.row].TowMenu[indexPath.item].name //把点击菜单的TowMenu全部显示出来
return value
}
}
//一级菜单图片(文字左边logo
func menu(menu: DOPDropDownMenu!, imageNameForRowAtIndexPath indexPath: DOPIndexPath!) -> String! {
let title = _MenuValue[indexPath.column]
if(title.OneMenu[indexPath.row].image=="" ||
title.OneMenu[indexPath.row].image==nil){
return ""
}
return title.OneMenu[indexPath.row].image
}
//二级菜单图片(文字左边logo
func menu(menu: DOPDropDownMenu!, imageNameForItemsInRowAtIndexPath indexPath: DOPIndexPath!) -> String! {
let title = _MenuValue[indexPath.column]
if(title.OneMenu[indexPath.row].TowMenu[indexPath.row].image=="" ||
title.OneMenu[indexPath.row].TowMenu[indexPath.row].image==nil){
return "无数据"
}
return title.OneMenu[indexPath.row].TowMenu[indexPath.item].image
}
//一级菜单 右边带有数字
func menu(menu: DOPDropDownMenu!, detailTextForRowAtIndexPath indexPath: DOPIndexPath!) -> String! {
let value = _MenuValue[indexPath.column]
return value.OneMenu[indexPath.row].TowMenu.count.description //获取二级列表的总数
}
//二级菜单 右边带有数字
func menu(menu: DOPDropDownMenu!, detailTextForItemsInRowAtIndexPath indexPath: DOPIndexPath!) -> String! {
return "0"
}
//选择
func menu(menu: DOPDropDownMenu!, didSelectRowAtIndexPath indexPath: DOPIndexPath!) {
let title = _MenuValue[indexPath.column]
if(title.OneMenu[indexPath.row].TowMenu.count==0){
//一级菜单
// print(title.OneMenu[indexPath.row].name)
if(myCallbackValue != nil){
myCallbackValue!(name: title.OneMenu[indexPath.row].name!,value:title.OneMenu[indexPath.row].value!)
}
}
else{//选中二级
if(indexPath.item>0){
// print(title.OneMenu[indexPath.row].TowMenu[indexPath.item].name )
myCallbackValue!(name: title.OneMenu[indexPath.row].TowMenu[indexPath.item].name!,value: title.OneMenu[indexPath.row].TowMenu[indexPath.item].value!)
}
}
}
}
如需代码，请移动到--->http://www.jianshu.com/p/0f950c180cb8