[FLEX-35312] Memory Leak in GridViewLayout

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 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
• Component/s: Spark: Grid
• Labels: memory memory-leak spark
• Environment: All
• Flags: Patch
• Assignee: Unassigned
• Reporter: Jason Taylor
• Created: 24/May/17 20:15
• Updated: 24/May/17 20:27

Description

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.