HarmonyOS TabBar热区事件处理

参考Demo：

import { router } from '@kit.ArkUI'

let storage = LocalStorage.getShared()

@Entry(storage)
@Component
struct TabsExample {
  bottomRectHeight: string = AppStorage.get<number>('bottomRectHeight') + 'px'

  @State tabArray: Array<number> = [0, 1, 2, 3]
  @State focusIndex: number = 0
  @State pre: number = 0
  @State index: number = 0
  private controller: TabsController = new TabsController()
  @State test: boolean = false
  @State inSetValueOne: number = 20
  @State color:Color = Color.Pink
  @State flagOne:Visibility = Visibility.Visible
  @State flagTwo:Visibility = Visibility.Hidden

  @State flag:boolean=true
  // 单独的页签
  @Builder
  Tab(tabName: string, tabItem: number, tabIndex: number) {
    Row({ space: 20 }) {
      Text(tabName).fontSize(18)
        .fontColor(tabItem===this.focusIndex?Color.Red:Color.Black)
    }
    .justifyContent(FlexAlign.Center)
    .constraintSize({ minWidth: 35 })
    .width("25%")
    .height(60)
    .borderRadius({ topLeft: 10, topRight: 10 })
    .onClick(() => {
      this.controller.changeIndex(tabIndex)
      this.focusIndex = tabIndex
    })
  }
  build() {
    Column() {

      //tabs
      Tabs({ barPosition: BarPosition.Start, controller: this.controller }) {
        ForEach(this.tabArray, (item: number, index: number) => {
          if(index===0){
            TabContent() {
              Stack(){
                Row() {
                  Slider({ style: SliderStyle.OutSet, value: this.inSetValueOne })
                    .blockStyle({ type: SliderBlockType.SHAPE })
                    .trackThickness(2)
                    .blockColor('#191970')
                    .trackColor('#ADD8E6')
                    .selectedColor('#4169E1')
                    .showTips(true)
                    .onChange((value: number, mode: SliderChangeMode) => {
                      this.inSetValueOne = value
                      console.info('cbl  value:' + value + 'mode:' + mode.toString())
                      // this.flagOne=Visibility.Hidden
                      // this.flagTwo=Visibility.Visible

                      this.flag=false
                      if(mode===2){
                        // this.flagOne=Visibility.Visible
                        // this.flagTwo=Visibility.Hidden
                        this.flag=true
                      }
                    })
                  Text(this.inSetValueOne.toFixed(0)).fontSize(12)
                }
              }
              .position({x:0,y:700})
              // .visibility(this.flag?Visibility.Visible:Visibility.Hidden)
              .width('95%')
            }
            // .backgroundColor(Color.Pink)
          }else {
            TabContent() {
              Text('我是页面 ' + item + " 的内容")
                .height(300)
                .width('100%')
                .fontSize(30)
            }
            // .backgroundColor(Color.Pink)
          }
        })
      }
      .width('100%')
      .height('90%')
      .barHeight(0)
      .animationDuration(100)
      .onChange((index: number) => {
        console.log('foo change')
        this.focusIndex = index})

      // tabbar
      Column() {
        // 页签
        Row({ space: 7 }) {
          Scroll() {
            Row() {
              ForEach(this.tabArray, (item: number, index: number) => {
                this.Tab("页签 " + item, item, index)
              })
            }
            .justifyContent(FlexAlign.Start)
          }
          .align(Alignment.Start)
          .scrollable(ScrollDirection.Horizontal)
          .scrollBar(BarState.Off)
          .width('90%')
        }
        .width('100%')
        .height('8%')
      }
      .alignItems(HorizontalAlign.Start)
      .width('100%')
    }
    .height('100%')
    .padding({bottom: this.bottomRectHeight})
  }
}
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