TAB菜单栏相关问题如何解决？

const COMMUNITY_TAB_BAR_INDEX: number = 2; // 初始化社区的tab下标  
const ARC_MARGIN_TOP: number = -30; // 圆弧的上外间距为-30  
export class TabBarDataType {  
  id: number;  
  defaultIcon: ResourceStr;  
  constructor(id: number, defaultIcon: ResourceStr) {  
    this.id = id;  
    this.defaultIcon = defaultIcon;  
  }  
}  
export const TABINFO: TabBarDataType[] = [  
  new TabBarDataType(0, $r('app.media.icon')),  
  new TabBarDataType(1, $r('app.media.icon')),  
  new TabBarDataType(2, $r('app.media.icon')),  
  new TabBarDataType(3, $r('app.media.icon')),  
  new TabBarDataType(4, $r('app.media.icon')),  
];  
@Entry  
@Component  
struct TabViewDemo {  
  @Provide selectedIndex: number = 0; // 初始化被选定的tabBar下标  
  private controller: TabsController = new TabsController(); // 初始化Tab控制器  
  build() {  
    Column() {  
      Tabs({ index: this.selectedIndex, barPosition: BarPosition.End, controller: this.controller }) {  
        TabContent() {  
          Text("tab1")  
            .fontSize(26)  
        }  
        TabContent() {  
          Text("tab2")  
            .fontSize(26)  
        }  
        TabContent() {  
          Text("tab3")  
            .fontSize(26)  
        }  
        TabContent() {  
          Text("tab4")  
            .fontSize(26)  
        }  
        TabContent() {  
          Text("tab5")  
            .fontSize(26)  
        }  
      }  
      .vertical(false)  
      .scrollable(false)  
      .layoutWeight(1)  
      .backgroundColor('#ffdbd9d9')  
      .barHeight(0)  
      .onChange((index: number) => {  
        this.selectedIndex = index;  
      })  
      // 自定义TabBar组件  
      CustomTabBar({ selectedIndex: $selectedIndex })  
    }.width("100%")  
    .height("100%")  
  }  
}  
@Component  
struct CustomTabBar {  
  @Link selectedIndex: number; // 初始化被选定的tabBar下标  
  build() {  
    Flex({ direction: FlexDirection.Row, justifyContent: FlexAlign.SpaceAround, alignItems: ItemAlign.Center }) {  
      ForEach(TABINFO, (item: TabBarDataType, tabIndex: number) => {  
        // 单独一个TabBar组件  
        TabItem({  
          tabBarIndex: tabIndex,  
          selectedIndex: $selectedIndex,  
        })  
      })
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