HarmonyOS 资讯类demo

@Entry  
@Component  
struct Index {  
  @State navList: string[] =  
    ['首页', '手机', '电脑', '食品', '男装', '生鲜', '家具', '厨具', '男装', '生鲜', '家具', '厨具']  
  @State titleIndex: number = 0  
  @State pageIndex: number = 0  
  @State alignListItem: ListItemAlign = ListItemAlign.Start  
  build() {  
    Flex({ direction: FlexDirection.Row }) {  
      List({ space: 10 }) {  
        ForEach(this.navList, (item: Resource, index?: number) => {  
          ListItem() {  
            Text(item)  
              .fontSize(16)  
              .fontColor(this.titleIndex == index ? Color.Red : Color.Black)  
              .decoration({  
                type: this.titleIndex == index ? TextDecorationType.Underline : TextDecorationType.None,  
                color: Color.Red  
              })  
              .onClick(() => {  
                if (index != undefined) {  
                  this.titleIndex = index  
                }  
              })  
          }  
  
        }, (item: Resource) => JSON.stringify(item))  
      }  
      .alignListItem(this.alignListItem)  
      .scrollBar(BarState.Off)  
      .listDirection(Axis.Horizontal)  
      .width("90%")  
      Row() {  
        Image($r('app.media.ic_split_line'))  
          .width(1)  
          .height(14)  
        Image($r('app.media.ic_more'))  
          .width(16)  
          .height(16)  
          .margin({  
            left: 2,  
            right: 2  
          })  
        Text('分类')  
          .fontSize(16)  
          .fontColor(Color.White)  
          .fontWeight(this.titleIndex === undefined ? 700 : 400)  
      }.onClick(() => {  
        this.titleIndex = 0;  
      })  
  
    }  
    .backgroundColor(Color.Pink)  
    .padding(10)  
    .height(50)  
    .align(Alignment.Center)  
  }  
}
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