Swiper组件刷新不了当前已经展示的一页数据

positionId: string 
private pages: HomeFunctionCellModel[][] = [] 
private listener: DataChangeListener | null = null 
private bannerViewModel: ActivityBannerViewModel | null = null 
 
/// IDataSource 
totalCount(): number { 
return this.pages.length 
} 
/// IDataSource 
getData(index: number): HomeFunctionCellModel[] { 
return this.pages[index] 
} 
/// IDataSource 
registerDataChangeListener(listener: DataChangeListener): void { 
this.listener = listener 
} 
/// IDataSource 
unregisterDataChangeListener() { 
} 
 
constructor(positionId: string) { 
this.pages = this.updateActivitiesToPages(this.localDefaultConfig()) 
this.positionId = positionId 
if (!positionId) return 
const bannerViewModel = new ActivityBannerViewModel(positionId, success => { 
if (this.bannerViewModel?.bannerImageLoadFinished && success) { 
const models = this.sortAndUnique(this.bannerViewModel.items.map(activity => { 
return convertActivityToHomeFunctionModel(activity) 
})) 
this.pages = 。。。 
this.listener?.onDataReloaded() // 异步调用了 onDataReloaded 页面内容没有更新，滚动页面后新出来的页面数据为新的，回滚到之前一页的时候数据依然不会更新。 
} 
}) 
} 
}