HarmonyOS 鸿蒙Next DevEco Studio 4.0 Release LazyForEach 之版本问题？

H1 使用LazyForEach时需要实现IDataSource

export class SwiperLazyDataSoutce implements IDataSource{

  private list: string[] = []
  private listener: DataChangeListener

  constructor(list:string[]) {
    this.list=list;
  }

  unregisterDataChangeListener(listener: DataChangeListener) {

  }

  totalCount(): number {
    return this.list.length
  }

  getData(index: number) {
    return this.list[index]
  }

  registerDataChangeListener(listener: DataChangeListener):void{
    this.listener = listener
  }

}

H1 使用代码

import {SwiperLazyDataSoutce} from '../utility/SwiperLazyDataSource'
@Preview
@Component
export struct Home {

  // 使用LazyForEach必须实现IDataSource
  private data:SwiperLazyDataSoutce=new SwiperLazyDataSoutce([]);

 aboutToAppear(){
   // 初始化轮播图数据
  let carouselArr: string[] = [
    'pages/images/home/carousel1.jpeg',
    'pages/images/home/carousel2.webp',
    'pages/images/home/carousel3.webp',
    'pages/images/home/carousel4.webp',
  ]
   this.data=new SwiperLazyDataSoutce(carouselArr)
 }

  build() {
      Column(){
        
        Row(){
          Swiper(){
            LazyForEach(this.data, (item: any) => {
              Image(item)
            },item=> item)
          }
        }
        .size({width:'100%',height:'6%'})
        .border({width:1,color:Color.Red})
      }
    .size({width:'100%',height:'100%'})
  }
}

H1 报错信息

[Compile Result] ArkTS:ERROR File: D:/DevEcoStudioProjects/goods/entry/src/main/ets/utility/SwiperLazyDataSource.ets:4:11
[Compile Result]  Property 'listener' has no initializer and is not definitely assigned in the constructor.
[Compile Result] ArkTS:ERROR File: D:/DevEcoStudioProjects/goods/entry/src/main/ets/pages/Home.ets:43:42
[Compile Result]  Use explicit types instead of "any", "unknown" (arkts-no-any-unknown)
[Compile Result] ArkTS:ERROR File: D:/DevEcoStudioProjects/goods/entry/src/main/ets/pages/Home.ets:45:24
[Compile Result]  Use explicit types instead of "any", "unknown" (arkts-no-any-unknown)

报错解读

1. private listener: DataChangeListener 没初始化
2. LazyForEach 不能定义item为any