HarmonyOS Swiper能接口请求完成后更新数据吗，给个具体demo吗？

class BasicDataSource implements IDataSource {  
  private listeners: DataChangeListener[] = [];  
  private originDataArray: string[] = [];  
  public totalCount(): number {  
    return 0;  
  }  
  public getData(index: number): string {  
    return this.originDataArray[index];  
  }  
  registerDataChangeListener(listener: DataChangeListener): void {  
    if (this.listeners.indexOf(listener) < 0) {  
      console.info('add listener');  
      this.listeners.push(listener);  
    }  
  }  
  unregisterDataChangeListener(listener: DataChangeListener): void {  
    const pos = this.listeners.indexOf(listener);  
    if (pos >= 0) {  
      console.info('remove listener');  
      this.listeners.splice(pos, 1);  
    }  
  }  
  notifyDataReload(): void {  
    this.listeners.forEach(listener => {  
      listener.onDataReloaded();  
    })  
  }  
  notifyDataAdd(index: number): void {  
    this.listeners.forEach(listener => {  
      listener.onDataAdd(index);  
      // 写法2：listener.onDatasetChange([{type: DataOperationType.ADD, index: index}]);  
    })  
  }  
  notifyDataChange(index: number): void {  
    this.listeners.forEach(listener => {  
      listener.onDataChange(index);  
    })  
  }  
  notifyDataDelete(index: number): void {  
    this.listeners.forEach(listener => {  
      listener.onDataDelete(index);  
    })  
  }  
  notifyDataMove(from: number, to: number): void {  
    this.listeners.forEach(listener => {  
      listener.onDataMove(from, to);  
    })  
  }  
}  
class MyDataSource extends BasicDataSource {  
  private dataArray: string[] = [];  
  
  public totalCount(): number {  
    return this.dataArray.length;  
  }  
  public getData(index: number): string {  
    return this.dataArray[index];  
  }  
  public addData(index: number, data: string): void {  
    this.dataArray.splice(index, 0, data);  
    this.notifyDataAdd(index);  
  }  
  public pushData(data: string): void {  
    this.dataArray.push(data);  
    this.notifyDataAdd(this.dataArray.length - 1);  
  }  
}