[WIP]Fix BackButtonBehavior.Command CanExecuteChanged memory leak - #37771
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[WIP]Fix BackButtonBehavior.Command CanExecuteChanged memory leak#37771devanathan-vaithiyanathan wants to merge 2 commits into
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🚀 Dogfood this PR with:
curl -fsSL https://raw.githubusercontent.com/dotnet/maui/main/eng/scripts/get-maui-pr.sh | bash -s -- 37771Or
iex "& { $(irm https://raw.githubusercontent.com/dotnet/maui/main/eng/scripts/get-maui-pr.ps1) } 37771" |
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Issue Details
BackButtonBehavior.Command strongly subscribed to CanExecuteChanged, causing discarded behaviors and their binding contexts to remain in memory.
Description of Change
Updated BackButtonBehavior.Command to use WeakCommandSubscription for CanExecuteChanged. The previous subscription is disposed when the command changes, preventing long-lived commands from retaining discarded behaviors and their binding contexts.
Issues Fixed
Fixes #37635
Tested the behavior in the following platforms.
Before.mov
After.mov