Bug 42320 - Full page CarouselView with embedded Listview is hardly usable
Summary: Full page CarouselView with embedded Listview is hardly usable
Status: RESOLVED NOT_ON_ROADMAP
Alias: None
Product: Forms
Classification: Xamarin
Component: Android ()
Version: 2.2.0
Hardware: PC Windows
: Normal major
Target Milestone: ---
Assignee: Chris King
URL:
Depends on:
Blocks:
 
Reported: 2016-07-01 14:15 UTC by thomas
Modified: 2017-05-05 17:34 UTC (History)
6 users (show)

Tags: carouselview listview scroll android ac
Is this bug a regression?: ---
Last known good build:


Attachments
Reproproject (206.18 KB, application/x-zip-compressed)
2016-07-01 14:15 UTC, thomas
Details


Notice (2018-05-24): bugzilla.xamarin.com is now in read-only mode.

Please join us on Visual Studio Developer Community and in the Xamarin and Mono organizations on GitHub to continue tracking issues. Bugzilla will remain available for reference in read-only mode. We will continue to work on open Bugzilla bugs, copy them to the new locations as needed for follow-up, and add the new items under Related Links.

Our sincere thanks to everyone who has contributed on this bug tracker over the years. Thanks also for your understanding as we make these adjustments and improvements for the future.


Please create a new report on Developer Community or GitHub with your current version information, steps to reproduce, and relevant error messages or log files if you are hitting an issue that looks similar to this resolved bug and you do not yet see a matching new report.

Related Links:
Status:
RESOLVED NOT_ON_ROADMAP

Description thomas 2016-07-01 14:15:45 UTC
Created attachment 16548 [details]
Reproproject

After it was announced that CarouselPage will be deprecated I refactored my App to CarouselPage just to find out that it has some serious problems on Android like 

https://bugzilla.xamarin.com/show_bug.cgi?id=41463
https://bugzilla.xamarin.com/show_bug.cgi?id=40511

But if you use it like me as a Fullpage CarouselPage replacement with a ListView embedded it's hardly usable at all.

Just build the attached Project and deploy it to any Android Device.

When you try to scroll the ListView most of the time the Carousel will start turning so that you cannot scroll the listview without accidently change the page.

On iOS this works fine depending on your direction when you first strike the screen.

Please do something about this!
Thomas
Comment 1 adrianknight89 2016-07-01 15:44:14 UTC
+1. I'd given feedback on the forum related to this, but here it is again:

Tested it on Android:

"When you create a carousel of listviews, listview scrolling seems messed up. Any slight right/left swipe will cancel listview scroll. I think there should be a way to set swipe tolerance so carouselview does not wake up.

Also, if you stop swiping the carousel between two positions, it will crash the app.

Finally, the carousel doesn't seem to snap back into the original position if you don't swipe long enough."
Comment 2 Paul DiPietro [MSFT] 2017-03-14 21:38:42 UTC
Still appears to be occurring with pre2.
Comment 3 Chris King 2017-05-05 17:34:11 UTC
CarouselView to be deprecated and replaced with https://github.com/xamarin/Xamarin.Forms/pull/853