自定义UIPageViewController
LFPageViewController : 使用UIScrollView实现，手动管理控制器生命周期
LFCollectPageViewController: 使用UICollectView实现, 自动管理控制器生命周期
使用方式
//定义标题数组 var titles = ["头条", "科技", "推荐", "萌宠", "数码", "评测", "杭州", "手机", "电脑&PC", "平板", "娱乐", "笔记本", "台式机", "显示器", "智能家居", "手表", "苹果", "其他"] var controllers = [UIViewController]() let pageVc = LFPageViewController(withTitles: titles) pageVc.delegate = self pageVc.dataSource = self for index in 0..<self.titles.count { let normalVc = OneViewController() normalVc.set(index: index) controllers.append(normalVc) } self.addChildViewController(pageVc) view.addSubview(pageVc.view) pageVc.didMove(toParentViewController: self) 实现代理
func numberOfViewControllers(pageViewController: LFPageViewController) -> Int { return controllers.count } func pageViewController(pageViewController: LFPageViewController, controllerAtIndex index: Int) -> UIViewController! { return controllers[index] }