HarmonyOS 手机、平板适配问题

@Entry  
@Component  
struct ListExample {  
  private arr: number[] = []  
  private scrollerForList: Scroller = new Scroller()  
  
  aboutToAppear() {  
    for (let i = 0; i < 20; i++) {  
      this.arr.push(i)  
    }  
  }  
  build() {  
    Column() {  
      Row() {  
        List({ space: 20, initialIndex: 3, scroller: this.scrollerForList }) {  
          ForEach(this.arr, (item: number) => {  
            ListItem() {  
              Text('' + item)  
                .width('100%').height(100).fontSize(16)  
                .textAlign(TextAlign.Center)  
            }  
            .borderRadius(10).backgroundColor(0xFFFFFF)  
            .width('60%')  
            .height('80%')  
          }, (item: number) => JSON.stringify(item))  
        }  
        .chainAnimation(true)  
        .edgeEffect(EdgeEffect.Spring)  
        .listDirection(Axis.Horizontal)  
        .height('100%')  
        .width('100%')  
        .scrollSnapAlign(ScrollSnapAlign.CENTER)  
        .borderRadius(10)  
        .backgroundColor(0xDCDCDC)  
      }  
      .width('100%')  
      .height('100%')  
      .backgroundColor(0xDCDCDC)  
      .padding({ top: 10 })  
    }  
  }  
}