HarmonyOS Column中子View的宽度如何根据Column的实际宽度进行自适应？

Question

Column(){
  Text(item.name)
    .fontColor(this.selectIndex === index ? $r('app.color.color_main'): $r('app.color.color_333333'))
    .fontWeight(this.selectIndex === index ? FontWeight.Medium : FontWeight.Regular)
    .fontSize(16)
    .margin({top:16})
  Shape()
    .width(48)
    .height(2)
    .borderRadius(2)
    .backgroundColor($r('app.color.color_main'))
    .margin({top:7})
    .visibility(this.selectIndex===index?Visibility.Visible:Visibility.Hidden)
}.height(44)

Shape的宽度 如何根据Text宽度进行自适应

Answer 1

这是个简易demo

@Entry
@Component
struct TabsOpaque {
  text: ResourceStr | undefined;
  @State message: string = 'Hello World'
  private controller: TabsController = new TabsController()
  @State selfFadingFade: boolean = true;

  build() {
    Column(){
      Stack({ alignContent: Alignment.Top }){
        Row(){
          Image($r('app.media.ic_more'))
            .width(20)
            .height(20)
        }
        .backgroundColor('#808080')
        .height(40)
        .width('100%')
        .justifyContent(FlexAlign.End)
        .flexShrink(1)
        .justifyContent(FlexAlign.End)
        .onClick(()=>{
          console.log('更多')
        })
        Tabs({ barPosition: BarPosition.Start, controller: this.controller }) {
          TabContent() {
            Column().width('100%').height('100%').backgroundColor(Color.Pink)
          }.tabBar('一键执法')

          TabContent() {
            Column().width('100%').height('100%').backgroundColor(Color.Yellow)
          }.tabBar('应急公务')

          TabContent() {
            Column().width('100%').height('100%').backgroundColor(Color.Blue)
          }.tabBar('执法执勤')

          TabContent() {
            Column().width('100%').height('100%').backgroundColor(Color.Pink)
          }.tabBar('补录')
        }
        .vertical(false)
        .scrollable(true)
        .fadingEdge(true)
        .barMode(BarMode.Fixed)
        .barHeight(40)
        .animationDuration(400)
        .onChange((index: number) => {
          console.info(index.toString())
        })
        .width('100%')
      }

    }.width('100%')
    .height('100%')
  }
}