VirtualScroll not working with asynchronous data

[Riron]

Short description of the problem:

If items in a virtual list are loaded asynchronously, they don't appear.

What behavior are you expecting?

They should be displayed :)

Steps to reproduce:

1. Create a virtualScroll list with an empty array
2. Asyncronously load data into this array
3. Nothing gets rendered...

What it might be after a brief look at the directive :
The ngDoCheck method only updates the list if _initis true.

  ngDoCheck() {
    if (this._init) {
      this.update(true);
    }
  } 

But this._init is only set to true on the update()method (called by ngAfterContentInit()) IF there are already elements to display. If those elements are loaded after the ngAfterContentInit() is executed, this._init will never be set to true and the items won't be rendered :

  update(checkChanges: boolean) {
    var self = this;

    if (!self._records || !self._records.length) return;

Which Ionic Version?

Ionic V2 beta 4

Plunker that shows an example of your issue

http://plnkr.co/edit/CBSEvKTQEjOhgvaoZb2I?p=preview

[agates]

Hah, looks like you got here right before me! Same issue here in #6125

[adamdbradley]

Thanks for the detailed report and helping to debug this. Should be fixed in the next release.