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[Bug] [Android] TalkBack always considers ListView's header and footer for indexing/counting #15305

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heikow10 opened this issue Apr 11, 2022 · 0 comments · Fixed by #15306
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[Bug] [Android] TalkBack always considers ListView's header and footer for indexing/counting #15305

heikow10 opened this issue Apr 11, 2022 · 0 comments · Fixed by #15306
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Description

When using the TalkBack screen reader the header and the footer of a ListView are handled as items even if header and footer are actually unset. So the indexing starts with two for the first item and the total item count is two more than the actual item count.

This issue is a duplicate of #4090 which is closed but not fixed.
For the .NET MAUI issue see dotnet/maui#3995.

Steps to Reproduce

  1. create a ListView with at least one item and without a header and without a footer
  2. activate TalkBack
  3. tap on an item in the ListView

Expected Behavior

TalkBack starts indexing with one for the first item and reads out the correct number of items.

Actual Behavior

TalkBack starts indexing with two for the first item and the read out total item count is two more than the actual item count.

Basic Information

  • Version with issue: 5.0.0.2401
  • Last known good version: None?
  • Platform Target Frameworks:
    • iOS: not tested
    • Android: 4.4 and 10.0
    • UWP: not tested
  • Android Support Library / AndroidX Version: –
  • NuGet Packages: NETStandard.Library 2.0.3
  • Affected Devices: HTC device with Android 4.4 and HUAWEI device with Android 10.0

Environment

Show/Hide Visual Studio info 
Microsoft Visual Studio Community 2019
Version 16.11.11
VisualStudio.16.Release/16.11.11+32228.343
Microsoft .NET Framework
Version 4.8.04084

Installed Version: Community

Visual C++ 2019   00435-00000-00000-AA171
Microsoft Visual C++ 2019

ASP.NET and Web Tools 2019   16.11.106.23128
ASP.NET and Web Tools 2019

ASP.NET Web Frameworks and Tools 2019   16.11.106.23128
For additional information, visit https://www.asp.net/

Azure App Service Tools v3.0.0   16.11.106.23128
Azure App Service Tools v3.0.0

Azure Functions and Web Jobs Tools   16.11.106.23128
Azure Functions and Web Jobs Tools

C# Tools   3.11.0-4.22108.8+d9bef045c4362fbcab27ef35daec4e95c8ff47e1
C# components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Clear MEF Component Cache   1.4
Clears the Visual Studio MEF component cache to fix issues with cache corruption.

CodeMaid   12.0.300
CodeMaid is an open source Visual Studio extension to cleanup and simplify our C#, C++, F#, VB, PHP, PowerShell, R, JSON, XAML, XML, ASP, HTML, CSS, LESS, SCSS, JavaScript and TypeScript coding.

Command Explorer   1.0.9999
Provides a tool window to explorer all commands, groups and menus to help extension authors place commands/buttons in the desired location

Common Azure Tools   1.10
Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.

Dotfuscator Community Edition   6.3.0+8b29d6f4a2
PreEmptive Protection - Dotfuscator CE

Extensibility Essentials 2019   1.1.10
A collection of extensions that makes it much easier to write Visual Studio extensions

Extensibility Message Bus   1.2.6 (master@34d6af2)
Provides common messaging-based MEF services for loosely coupled Visual Studio extension components communication and integration.

KnownMonikers Explorer 2019   1.2.42
A tool window for Visual Studio extension authors to explore the KnownMonikers image collection

Microsoft Azure Tools for Visual Studio   2.9
Support for Azure Cloud Services projects

Microsoft Continuous Delivery Tools for Visual Studio   0.4
Simplifying the configuration of Azure DevOps pipelines from within the Visual Studio IDE.

Microsoft JVM Debugger   1.0
Provides support for connecting the Visual Studio debugger to JDWP compatible Java Virtual Machines

Microsoft Library Manager   2.1.113+g422d40002e.RR
Install client-side libraries easily to any web project

Microsoft MI-Based Debugger   1.0
Provides support for connecting Visual Studio to MI compatible debuggers

Microsoft Visual C++ Wizards   1.0
Microsoft Visual C++ Wizards

Microsoft Visual Studio Tools for Containers   1.2
Develop, run, validate your ASP.NET Core applications in the target environment. F5 your application directly into a container with debugging, or CTRL + F5 to edit & refresh your app without having to rebuild the container.

Microsoft Visual Studio VC Package   1.0
Microsoft Visual Studio VC Package

Mono Debugging for Visual Studio   16.10.15 (552afdf)
Support for debugging Mono processes with Visual Studio.

MySQL for Visual Studio   1.2.9
Data design and management tools for MySQL. Copyright (c) 2007, 2019, Oracle and/or its affiliates. All rights reserved.

NuGet Package Manager   5.11.0
NuGet Package Manager in Visual Studio. For more information about NuGet, visit https://docs.nuget.org/

Productivity Power Tools 2017/2019   16.0
Installs the individual extensions of Productivity Power Tools 2017/2019

ProjectServicesPackage Extension   1.0
ProjectServicesPackage Visual Studio Extension Detailed Info

Razor (ASP.NET Core)   16.1.0.2122504+13c05c96ea6bdbe550bd88b0bf6cdddf8cde1725
Provides languages services for ASP.NET Core Razor.

SQL Server Data Tools   16.0.62201.17150
Microsoft SQL Server Data Tools

TypeScript Tools   16.0.30526.2002
TypeScript Tools for Microsoft Visual Studio

Visual Basic Tools   3.11.0-4.22108.8+d9bef045c4362fbcab27ef35daec4e95c8ff47e1
Visual Basic components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Visual F# Tools   16.11.0-beta.21514.6+b6c2c4f53ea3a08fa603ea93d6d2f808a62a21d1
Microsoft Visual F# Tools

Visual Studio Code Debug Adapter Host Package   1.0
Interop layer for hosting Visual Studio Code debug adapters in Visual Studio

Visual Studio Container Tools Extensions   1.0
View, manage, and diagnose containers within Visual Studio.

Visual Studio Spell Check Everywhere   VSSpellCheckEverywhere
An extension that enables spell checking within any Visual Studio file editor or tool window that uses WPF text boxes.
https://GitHub.com/EWSoftware/VSSpellChecker

Visual Studio Spell Checker   VSSpellChecker
An editor extension that checks the spelling of comments, strings, and plain text as you type or interactively with tool windows.
https://GitHub.com/EWSoftware/VSSpellChecker

Visual Studio Tools for Containers   1.0
Visual Studio Tools for Containers

VisualStudio.DeviceLog   1.0
Information about my package

VisualStudio.Foo   1.0
Information about my package

VisualStudio.Mac   1.0
Mac Extension for Visual Studio

Xamarin   16.11.000.197 (d16-11@6934992)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.

Xamarin Designer   16.11.0.47 (remotes/origin/d16-11@e0d612363)
Visual Studio extension to enable Xamarin Designer tools in Visual Studio.

Xamarin Templates   16.10.5 (355b57a)
Templates for building iOS, Android, and Windows apps with Xamarin and Xamarin.Forms.

Xamarin.Android SDK   12.0.0.3 (d16-11/f0e3c2d)
Xamarin.Android Reference Assemblies and MSBuild support.
    Mono: c633fe9
    Java.Interop: xamarin/java.interop/d16-11@476bb5b
    ProGuard: Guardsquare/proguard/v7.0.1@912d149
    SQLite: xamarin/sqlite/3.35.4@85460d3
    Xamarin.Android Tools: xamarin/xamarin-android-tools/d16-11@87af37b


Xamarin.iOS and Xamarin.Mac SDK   15.2.0.17 (738fde344)
Xamarin.iOS and Xamarin.Mac Reference Assemblies and MSBuild support.

Build Logs

–

Screenshots

Not applicable

Reproduction Link

https://github.com/heikow10/XamarinFormsListViewIndexBug

Workaround

No workaround known
@heikow10 heikow10 added s/unverified New report that has yet to be verified t/bug 🐛 labels Apr 11, 2022
heikow10 added a commit to heikow10/Xamarin.Forms that referenced this issue Apr 11, 2022
@heikow10
Added repro sample (xamarin#15305)
15ec2fe
heikow10 added a commit to heikow10/Xamarin.Forms that referenced this issue Apr 11, 2022
@heikow10
Added repro sample (xamarin#15305)
3ac162a
@heikow10 heikow10 mentioned this issue Apr 11, 2022
Merged
2 tasks
jfversluis pushed a commit to heikow10/Xamarin.Forms that referenced this issue Jul 7, 2022
@heikow10 @jfversluis
Added repro sample (xamarin#15305)
698ed82
jfversluis pushed a commit that referenced this issue Jul 11, 2022
@heikow10
[Android] fix item indices and item count in a ListView (#15306)
48a7087 
* Added repro sample (#15305)

* remove header and footer of ListView when they are empty

taken from PR #10151

* fix ListView index on click when ListView has no header
heikow10 added a commit to heikow10/Xamarin.Forms that referenced this issue Jul 15, 2022
@heikow10
Fix scroll position in ListView on Android (xamarin#15305)
dbe38cc
heikow10 added a commit to heikow10/Xamarin.Forms that referenced this issue Jul 15, 2022
@heikow10
Fix scroll position in ListView on Android (xamarin#15305)
91e4a07
@heikow10 heikow10 mentioned this issue Jul 15, 2022
Closed
2 tasks
jfversluis added a commit that referenced this issue Jul 16, 2022
@jfversluis @heikow10
[Android] fix item indices and item count in a ListView (#15478)
94acebb 
* Revert "Revert "[Android] fix item indices and item count in a ListView (#15306)" (#15473)"

This reverts commit 04ace58.

* Fix scroll position in ListView on Android (#15305)

Co-authored-by: Heiko Wobst <[email protected]>
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