HarmonyOS 有没有办法动态添加组件？

// 定义一个空的builder  
@Builder  
function defaultBuilder(): void {}  
  
// 定义一个class，有对应的WrappedBuilder  
export class DataModel {  
  id: string = ''  
  value: string = ''  
  otherProp: string = ''  
  builderWrap: WrappedBuilder<[string]> = wrapBuilder(defaultBuilder)  
  
  constructor(id: string, value: string, builderWrap: WrappedBuilder<[string]>) {  
    this.id = id  
    this.value = value  
    this.builderWrap = builderWrap  
  }  
}  
  
@Builder  
function CustomBuilder(param: string) {  
  Column() {  
    Text(param)  
      .fontSize(50)  
      .fontWeight(FontWeight.Bold)  
  }.height(50)  
}  
  
let customPageWrappedBuilder: WrappedBuilder<[string]> = wrapBuilder(CustomBuilder);  
  
export function getNewsData(): Promise<DataModel[]> {  
  let arr: DataModel[] = [new DataModel('1', 'test1', customPageWrappedBuilder), new DataModel('2', 'test2', customPageWrappedBuilder)]  
  return new Promise((resolve) => {  
    resolve(arr)  
  })  
}  
  
export function getNewsItem(id: string, value: string): Promise<DataModel> {  
  return new Promise((resolve) => {  
    resolve(new DataModel(id, value, customPageWrappedBuilder))  
  })  
}  
  
@Entry  
@Component  
struct WrapperBuilderPage {  
  @State testData: DataModel[] = []  
  @State count: number = 2  
  
  async aboutToAppear() {  
    this.testData = await getNewsData();  
  }  
  build() {  
    Column() {  
      Row() {  
        Button('addView').onClick(async () => {  
          this.count++  
          let newsItem: DataModel = await getNewsItem('' + this.count, 'test' + this.count)  
          this.testData.push(newsItem)  
        })  
        Button('removeView').onClick(async () => {  
          this.count--  
          this.testData.pop()  
        })  
      }  
      Column() {  
        ForEach(this.testData, (item: DataModel) => {  
          item.builderWrap.builder(item.value)  
        })  
      }  
    }  
    .width('100%')  
    .height('100%')  
  }  
}
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