xamarin/Xamarin.Forms

[Bug] GroupHeaderTemplate leaks Memory

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#6,761 opened on Jul 3, 2019

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 (5 comments) (0 reactions) (0 assignees)C# (1,926 forks)batch import
a/listviewa/performancee/3 :clock3:help wantedin-progressp/iOS 🍎t/bug :bug:up-for-grabs

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Description

Description

When I repeat that I add items to ListView with GroupHeaderTemplate and clear items, GC.GetTotalMemory(true) is increasing.

Steps to Reproduce

  1. Create ListView with GroupHeaderTemplate
  2. Add items and clear items.
  3. Repeat "2.".

Expected Behavior

GC.GetTotalMemory(true) dosen't increase.

Actual Behavior

GC.GetTotalMemory(true) increases.

Basic Information

  • Version with issue: 4.1.0.555618
  • Last known good version: I don't know
  • IDE: Visual Studio 2019 Professional
  • Platform Target Frameworks:
    • iOS: 12.3.1
  • Nuget Packages:
  • Affected Devices: iPod touch 6

Screenshots

sorry for this isn't specified format MomentAppCrashes.mp4.zip

Reproduction Link

MemoryTest.zip

Contributor guide

Research direction
Investigate the memory leak in GroupHeaderTemplate by examining the ListView's item recycling and template lifecycle. Use memory profiling tools like Xamarin Profiler or dotMemory to identify objects that are not being garbage collected. Focus on the handler or renderer responsible for managing GroupHeaderTemplate instances on iOS.
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.
1-2 days
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.Formsmemory profiling tools
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40