I'm investigating https://github.com/MvvmCross/MvvmCross/issues/1343 for a possible memory leak related to our version of the RecyclerView widget MvxRecyclerView and have run against an interesting issue.
When swapping out the itemsource in the adapter the RecyclerView instantiates ViewHolders but never seems to kill them no matter how many times I force a GC. If I add a "~MvxRecyclerViewHolder()" method to MvxRecyclerViewHolder I never get in there. However I do hit the JavaFinalize method and now I am completely confused. Why would I hit the JavaFinalizer and not the .NET one? There is never an explicit Dispose on the MvxRecyclerView so I can't see why the Java -> .NET connection would be severed. The only instance I've found where Xamarin uses JavaFinalize is at https://github.com/xamarin/Xamarin.Forms/blob/master/Xamarin.Forms.Platform.Android/Renderers/GenericAnimatorListener.cs#L35 which doesn't explain much. Am I seeing a bug in Xamarin? In MvvmCross's RecyclerView? Or more likely: am I just confused about the interaction of two garbage collectors. Jeremy
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