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https://issues.apache.org/jira/browse/FLEX-35312?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Taylor updated FLEX-35312:
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the ClearCache method is there to provide a method for a user to explicity
flush the renderer cache, so it would only be called from user code. For me
most of my views implement a Destroy method, and in my custom grid component
it's Destroy method calls the clear cache internally.
> Memory Leak in GridViewLayout
> -----------------------------
>
> Key: FLEX-35312
> URL: https://issues.apache.org/jira/browse/FLEX-35312
> Project: Apache Flex
> Issue Type: Bug
> Components: Spark: Grid
> Affects Versions: Apache Flex 4.13.0, Apache Flex 4.12.1, Apache Flex
> 4.14.0, Apache Flex 4.15.0, Apache Flex 4.14.1, Apache Flex 4.16.0, Apache
> Flex 4.17.0
> Environment: All
> Reporter: Jason Taylor
> Labels: memory, memory-leak, spark
> Attachments: jtaylor_flexsdk_gridviewlayoutcache_patch.diff
>
>
> The Spark GridViewLayout uses strong dictionaries for caching itemrenderers,
> often leading to a situation where those itemrenderers are never released to
> the garbage collector.
> The proposed patched changes GridViewLayout to use weak reference
> dictionaries and additionally adds a public method to Grid to allow the
> client to explicitly flush the item renderer cache.
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