xamarin/Xamarin.Forms

[Bug] Xamarin ListView doesn't layout properly when SfExpander is loaded in it in Xamarin.Forms iOS platform

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#7,797 opened on Oct 3, 2019

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Description

Hi Team

Description

In the attached sample, we have loaded Expander inside the Xamarin ListView. When we expand and collapse the expander item at runtime, the contents are not updated properly.

Steps to Reproduce

  1. Run the attached sampleSample-XFissue.zip in iOS platform
  2. Expand and collapse the item.
  3. The items are not layout properly.

Expected Behavior

The items should layout properly when we expand and collapse the item

Actual Behavior

The items are not layout properly when we expand and collapse the item

Basic Information

Nuget Packages: XF 4.2.0.709249 Affected Devices: iOS simulator 12.2

Reproduction Link

Sample : Sample-XFissue.zip

Contributor guide

Research direction
Investigate the layout update mechanism in Xamarin.Forms ListView when the content inside a cell changes height. Verify if the SfExpander triggers proper layout invalidation. Check if enabling HasUnevenRows or using a different caching strategy resolves the issue. Also examine if the SfExpander's expand/collapse animation affects the cell's measurement.
Tech stack
csharp
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.
Half day
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
Xamarin.FormsiOS
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60