Xamarin.forms: [Bug] [CollectionView] [UWP] CollectionView shows empty items when DataTemplateSelector is used on UWP

[toomasz]

Description

CollectionView shows empty items when DataTemplateSelector is used. Happens only on UWP

Steps to Reproduce

1. Run sample

Expected Behavior

CollectionView shows views defined by templates returned by DataTemplateSelector

Actual Behavior

CollectionView shows empty items

Basic Information

• Version with issue: 4.1
• Last known good version: None
• IDE: VS2017
• Platform Target Frameworks:
  
  
  
  • UWP: 17134
  
  

Screenshots

Reproduction Link

CollectionViewRepro.zip

[toomasz]

/cc @hartez

[jsuarezruiz]

Thanks for the repro sample. I am able to reproduce the problem. Some details:

• The problem is reproduced in UWP. I have tried with Xamarin.Forms 4.x (4.0, 4.1 and 4.2 Preview).
• Using one of the templates directly works as expected.
• The OnSelectTemplate method from the DataTemplateSelector is not called on UWP!.

[toomasz]

@jsuarezruiz Thanks for checking, yes i noticed OnSelectTemplate is not called at all.
Btw, a/listview label is wrong. It should be a/collectionvview

[hartez]

Well, I wouldn't exactly call it a "bug", so much as a "thing we haven't implemented yet".

CollectionView Feature Progress

[hartez]

Okay, it's in progress: #6918

[toomasz]

@hartez Thanks!