xamarin/Xamarin.Forms

[Bug][Android] Entry's instance count get increases in each and every scroll while adding it in Table View

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#6,608 opened on Jun 20, 2019

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a/entrya/listviewa/performancee/3 :clock3:help wantedp/Androidt/bug :bug:up-for-grabs

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Description

Description

I have added Entry control inside the TableView with uneven rows, scroll the TableView top and bottom, checked the instance count by using Android profiler. For each and every scroll, the Entry's instance count get increased.

Steps to Reproduce

  1. Add the Entry inside the Table view
  2. Scroll the Table view
  3. Check the Entry instance count by using Android profiler

Expected Behavior

Entry's instance count not get increased while scrolling

Actual Behavior

Entry's instance count increases on each scroll

Basic Information

  • Version with issue:
  • Last known good version: Checked in both 3.1.0.697729 and 4.0.0.497661
  • IDE: Visual Studio Professional 2017, Android Studio 3.4
  • Platform Target Frameworks:
    • Android: Android SDK version 6.0 (API 23)
  • Android Support Library Version: 28.0.0.1
  • Nuget Packages:
  • Affected Devices: MotoE2 (4G-LTE)

Screenshots

Initial instance :

After 10 scrolls :

Reproduction Link

TableViewIssue.zip

Contributor guide

Research direction
Investigate why Entry instances are not being recycled in TableView. Use Android Profiler to track object references and identify why instance count increases on scroll.
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.
1-2 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.FormsAndroidAndroid Profiler
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50