pageView.preLoadRange = 1...3 //当前控制器的左边预加载1个，右边预加载3个

self.tabBarItem.badgeValue = "\(indexPath.row)"//红点设置为LLSegmentRedBadgeValue

class SimpDemoViewController: LLSegmentViewController { override func viewDidLoad() { super.viewDidLoad() loadSegmentedConfig() } } extension SimpDemoViewController{ func loadSegmentedConfig() { layoutContentView() loadCtls() setUpSegmentStyle() } func layoutContentView() { self.layoutInfo.segmentControlPositionType = .top(size: CGSize.init(width: UIScreen.main.bounds.width, height: 44),offset:0) self.relayoutSubViews() } func loadCtls() { let introCtl = UIViewController() introCtl.title = "简介" introCtl.view.backgroundColor = UIColor.yellow let catalogCtl = UIViewController() catalogCtl.title = "目录" catalogCtl.view.backgroundColor = UIColor.red let ctls = [introCtl,catalogCtl] reloadViewControllers(ctls:ctls) } func setUpSegmentStyle() { let itemStyle = LLSegmentItemTitleViewStyle() itemStyle.selectedColor = UIColor.init(red: 50/255.0, green: 50/255.0, blue: 50/255.0, alpha: 1) itemStyle.unSelectedColor = UIColor.init(red: 136/255.0, green: 136/255.0, blue: 136/255.0, alpha: 1) itemStyle.selectedTitleScale = 1 itemStyle.titleFontSize = 15 itemStyle.itemWidth = UIScreen.main.bounds.width/CGFloat(ctls.count)//如果不指定是自动适配的 //这里可以继续增加itemStyle的其他配置项... ... segmentCtlView.backgroundColor = UIColor.white segmentCtlView.separatorLineShowEnabled = true //间隔线显示，默认不显示 //还有其他配置项：颜色、宽度、上下的间隔... segmentCtlView.bottomSeparatorStyle = (1,UIColor.red) //分割线:默认透明色 segmentCtlView.indicatorView.widthChangeStyle = .stationary(baseWidth: 11)//横杆宽度:有默认值 segmentCtlView.indicatorView.centerYGradientStyle = .bottom(margin: 0)//横杆位置:有默认值 segmentCtlView.indicatorView.shapeStyle = .custom //形状样式:有默认值 var segmentedCtlStyle = LLSegmentedControlStyle() segmentedCtlStyle.segmentItemViewClass = LLSegmentItemTitleView.self //ItemView和ItemViewStyle要统一对应 segmentedCtlStyle.itemViewStyle = itemStyle segmentCtlView.reloadData(ctlViewStyle: segmentedCtlStyle) } 

//1、设置标题 public func titleChange(title:String) //2、滚动时会调用这个方法，percent的取值范围是0...1 public func percentChange(percent:CGFloat) //3、返回当前ItemView的宽度 public func itemWidth() ->CGFloat //4、设置Item的style样式 public func setSegmentItemViewStyle(itemViewStyle:LLSegmentItemViewStyle)