angular - ionic 4 infinite scroll 只工作一次

Question

我看过其他关于此问题的帖子，但似乎没有说明我的问题是什么。我没有在控制台等上看到任何错误，并且在浏览器和手机上的行为是相同的。

代码如下。它确实第一次按预期工作并加载了另外 5 个对象。但后来我没有看到它再次被解雇

<ion-content fullscreen>
    <div  class="full-screen-bg">

            <div style="background-color: #181828;padding:10px">
                <ion-row *ngFor="let gal of core.gallery; let i=index">

                            <ion-col *ngIf="i%2 == 0 && core.gallery[i] != undefined" class="ion-text-center ion-padding" style="padding-top:0px !important">
                                <img *ngIf="core.gallery[i].type == 'image'" src="{{core.gallery[i].link}}" (click)="zoomImage(i)">
                                <iframe *ngIf="core.gallery[i].type == 'video'" style="width: 100%" [src]="getVideoUrl(core.gallery[i].link)" frameborder="0" allow="accelerometer; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
                            </ion-col>
                            <ion-col *ngIf="i%2 == 0 && core.gallery[i+1] != undefined"  style="padding-left:0px !important;padding-top:0px !important" class="ion-text-center ion-padding">
                                <img *ngIf="core.gallery[i+1].type == 'image'"  src="{{core.gallery[i+1].link}}"  (click)="zoomImage(i+1)">
                                <iframe *ngIf="core.gallery[i+1].type == 'video'" style="width: 100%" [src]="getVideoUrl(core.gallery[i+1].link)" frameborder="0" allow="accelerometer; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
                            </ion-col>

                </ion-row>
            </div>
    </div>

    <ion-infinite-scroll #infiniteScroll (ionInfinite)="loadData($event)">
        <ion-infinite-scroll-content
          loadingSpinner="bubbles"
          loadingText="Loading more data...">
        </ion-infinite-scroll-content>
    </ion-infinite-scroll>
</ion-content>

对于.ts

import { IonInfiniteScroll } from '@ionic/angular';

....
   @ViewChild(IonInfiniteScroll) infiniteScroll: IonInfiniteScroll;

 loadData(event) {
    setTimeout(async() => {

      let resp =  await this.sgSvc.getGalleryPaged(this.anchorKey)
      console.log("new anchor key:" + JSON.stringify(resp[0].key))
      this.anchorKey = resp[0].key
      var galleryKeys = Object.keys(resp)

      for(let galleryKey of galleryKeys){
        var galleryObj = resp[galleryKey]
        //console.log(galleryObj._name + " " + galleryObj._link)

        if(this.showPhotos == false && galleryObj._type == 'image')
          continue

        if(this.showVideos == false && galleryObj._type == 'video')
          continue 

        var glry:Gallery = new Gallery(galleryKey, galleryObj._name, galleryObj._type, galleryObj._link, galleryObj._date, galleryObj._desc)
        this.core.gallery.push(glry)
      }

      console.log('Done');
      event.target.complete();
    }, 500);
  }

Answer 1

同样的问题发生在我开发的一个页面上。
在评论“overflow-y: scroll;”之后，我在同一组件的 scss 中使用了以下样式
它开始运作良好。这很奇怪。我花了 3 个小时才弄明白:)

ion-grid,
ion-row {
  height: 100%;
  overflow-y: scroll;
}