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[Bug] [Android][UWP] CollectionView: empty view doesn't show if collection view contains a header #8326

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bugaga6enika opened this issue Oct 31, 2019 · 5 comments · Fixed by #13247
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[Bug] [Android][UWP] CollectionView: empty view doesn't show if collection view contains a header #8326

bugaga6enika opened this issue Oct 31, 2019 · 5 comments · Fixed by #13247
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@jsuarezruiz
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a/collectionview e/4 🕓 4 in-progress This issue has an associated pull request that may resolve it! p/Android p/UWP t/bug 🐛

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@bugaga6enika
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Description

In case you have a header in a collection view and an empty items source the empty view doesn't show on Android. It gets more confusing depending on an items source: if the items source is an empty collection then header is visible (the rest of the screen is just a blank page). But if the items source is null then the header is not visible anymore but an empty view is displayed.

Expected Behavior

I assume that header should be visible with an empty view no matter if items source is null or an empty collection. As it does currently on iOS.

Basic Information

  • IDE: VS for Mac

  • Platform Target Frameworks:

    • iOS: 13.1
    • Android: 9

  • Nuget Packages: Xamarin.Forms 4.3.0.947036

Screenshots

iOS
image

Android

image

CollectionViewHeaderWithEmptyView.zip
@bugaga6enika bugaga6enika added s/unverified New report that has yet to be verified t/bug 🐛 labels Oct 31, 2019
@hartez hartez removed the s/unverified New report that has yet to be verified label Oct 31, 2019
@hartez hartez added the e/4 🕓 4 label Oct 31, 2019
@hartez
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hartez commented Oct 31, 2019

I suspect this also happens with Footer.

@jsuarezruiz jsuarezruiz self-assigned this Oct 31, 2019
@bugaga6enika
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@hartez Yes, same behaviour with the footer as well

@albertoha94
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I am also experiencing this issue in Android 10.
EmptyView is displayed ONLY after i removed Header and Footer, if i put any of those, the EmptyView disappears.
No header:
screenshot-1572804897661

Header added:
screenshot-1572806657073

@jsuarezruiz jsuarezruiz mentioned this issue Nov 7, 2019
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@samhouts samhouts added the in-progress This issue has an associated pull request that may resolve it! label Nov 22, 2019
@garyng
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garyng commented Dec 10, 2019

This is indeed a very confusing bug...

@samhouts
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closed by #8415

@hartez hartez mentioned this issue Dec 29, 2020
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rmarinho pushed a commit that referenced this issue Dec 31, 2020
@hartez
Restore ability to display header, footer, and empty view simultaneou…
324b426 
…sly (#13247) fixes #8326 fixes #13252

* Restore ability to display header, footer, and empty view simultaneously
Now passes test from issue 8326

* Handle null emptyview/emptyviewtemplate

* Fix height check when deciding to update footer based on emptyview presence

* Fix EmptyView layout direction when CollectionView is RTL and items go to zero

* Add missing null checks in show and hide methods
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a/collectionview e/4 🕓 4 in-progress This issue has an associated pull request that may resolve it! p/Android p/UWP t/bug 🐛
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Restore ability to display header, footer, and empty view simultaneously xamarin/Xamarin.Forms
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@hartez @garyng @jsuarezruiz @samhouts @bugaga6enika @albertoha94