废话少说，先上gif图
下载地址：github.com/NiceForMe/LXHorizontalMenu
一、使用方法
(1)初始化：
LXHorizontalMenu *menu = [[LXHorizontalMenu alloc]initWithFrame:CGRectMake(0, 66, self.view.frame.size.width, self.view.frame.size.height) showSortMenu:YES currentItemArray:self.currentItemsArray restItemArray:self.restItemsArray rootMenuItems:[self rootMenuArray] topMenuHeight:50];
menu.sortButtonImage = [UIImage imageNamed:@"1"];
menu.topMenuBackGoundColor = [UIColor redColor];
menu.delegate = self;
menu.dataSource = self;
menu.itemLabelNormalColor = [UIColor purpleColor];
menu.itemLabelNormalFontSize = 13;
menu.itemLabelSelectColor = [UIColor greenColor];
menu.itemLabelSelectFontSize = 17;
self.automaticallyAdjustsScrollViewInsets = NO;//一定要加上这一行，官方文档的解释为
A Boolean value that indicates whether the view controller should automatically adjust its scroll view insets.简单点说就是automaticallyAdjustsScrollViewInsets根据按所在界面的status bar，navigationbar，与tabbar的高度，自动调整scrollview的 inset,设置为no，不让viewController调整，我们自己修改布局即可
[self.view addSubview:menu];
(2)数据源方法
／／返回当前有的频道
- (NSInteger)numberOfCurrentItemInHorizontalMenu:(LXHorizontalMenu *)horizontalMenu
{
return self.currentItemsArray.count;
}
／／返回所有或者说是剩余的频道
- (NSInteger)numberOfRestItemInHorizontalMenu:(LXHorizontalMenu *)horizontalMenu
{
return self.restItemsArray.count;
}
（3）代理方法
／／点击了topmenu的某个button
- (void)horizontalMenu:(LXHorizontalMenu *)horizontalMenu didSelectButtonWithIndex:(NSInteger)index
{
}
／／删除了某个button
- (void)horizontalMenu:(LXHorizontalMenu *)horizontalMenu didDeleteButtonWithIndex:(NSInteger)index
{
[self.restItemsArray addObject:self.currentItemsArray[index]];
[self.currentItemsArray removeObjectAtIndex:index];
[self storeArray];
}
／／添加了某个button
- (void)horizontalMenu:(LXHorizontalMenu *)horizontalMenu didAddButtonWithIndex:(NSInteger)index
{
ThirdView *tv = [[ThirdView alloc]init];
tv.label.text = self.restItemsArray[index];
[horizontalMenu.rootMenuItems addObject:tv];
[self.currentItemsArray addObject:self.restItemsArray[index]];
[self.restItemsArray removeObjectAtIndex:index];
[self storeArray];
}
／／移动了某个button，fromindex为移位的初始值，toindex为移位的终点站
- (void)horizontalMenu:(LXHorizontalMenu *)horizontalMenu didmoveButtonFromIndex:(NSInteger)fromIndex toIndex:(NSInteger)toIndex
{
//currentItemsArray
id objc = [self.currentItemsArray objectAtIndex:fromIndex];
[self.currentItemsArray removeObject:objc];
[self.currentItemsArray insertObject:objc atIndex:toIndex];
[self storeArray];
}