xamarin/Xamarin.Forms

Regression of Bugzilla#27779 Xamarin.Forms.ReadOnlyListAdapter.IndexOf throws NotImplementedException

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#6,195 opened on May 15, 2019

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3.6.0a/listviewe/3 :clock3:external-monohelp wantedi/highi/regressionp/iOS 🍎t/bug :bug:up-for-grabs

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Description

See https://bugzilla.xamarin.com/show_bug.cgi?id=27779

All details are there. I did originally fill this all out - then GitHub blanked out my report when I submitted it...

XamForms-CrashSelectingItem.zip

Contributor guide

Research direction
Review the linked Bugzilla report and trace the IndexOf method in ReadOnlyListAdapter to find the cause of the NotImplementedException. Check if there was a previous fix that got reverted or if the implementation is incomplete.
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.
1-3 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.
60