xamarin/Xamarin.Forms

Items are disappearing in the SfListView (Horizontal orientation only) while perform fling to scrolling After updating the xamarin forms version as higher than 3.0 in xamarin forms android platform

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#5,992 opened on Apr 24, 2019

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3.0.0e/6 :clock6:help wantedi/regressioninactivep/Androidpartnert/bug :bug:up-for-grabs

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Description

Description

Hi Team,

We are from syncfusion (SfListView) development team, We update the xamarin forms version as 3.1 in our source. After update this version we are facing a strange issue in xamarin forms android platform. While performing fling action to scroll the items which are disappeared in horizontal orientation. We didn't change anything in our source. So, we expect that, this issue related to xamarin side.

Steps to Reproduce

  1. Run the Attached Sample.
  2. Perform Flying to scrolling.
  3. Note : Watch Items are disappearing in the view.

Expected Behavior

Items are not disappearing in the view.

Actual Behavior

Items are disappearing in the view.

Basic Information

  • Version with issue: Above 3.0 (After update the DotNetStandard)
  • Last known good version: Below 3.0
  • IDE: Visual Studio Professional 2017 version 15.9.9
  • Platform Target Frameworks:
    • Android: Above kit-kat verison
  • Nuget Packages: Syncfusion.Xamarin.SfListView Version="17.1.0.42" and Xamarin.Forms Version="3.6.0.344457" (Above 3.0 version)
  • Affected Devices: All (Above kit kat version)

Reproduction Link

http://www.syncfusion.com/downloads/support/directtrac/general/ze/Grouping676007714

Contributor guide

Research direction
Investigate the fling scrolling behavior in Xamarin.Forms Android after version 3.0. Check the changes in Xamarin.Forms ListView renderer, specifically for horizontal orientation. Trace the item recycling or visibility logic during fling. Use the provided sample to reproduce and debug.
Tech stack
csharpandroid
Domain
mobile
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
C#Xamarin.Forms
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65