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https://issues.apache.org/jira/browse/FLEX-33052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13755661#comment-13755661
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Alex Harui commented on FLEX-33052:
-----------------------------------
Another potential workaround is to make the child's default styles differ
slightly from the main app's default styles. Then the child will register its
own styles. This presumes you won't be changing styles from the parent to try
to affect the child.
I attached a .css file with a fake css property in each selector that I found
in the default css file for Charts. By adding the MXMLC compiler option
-theme+=cssNoMerge.css
to the child app only, the chart showed up and there were no errors thrown.
> Runtime error when using a chart in a module in an app that is also using
> charts
> --------------------------------------------------------------------------------
>
> Key: FLEX-33052
> URL: https://issues.apache.org/jira/browse/FLEX-33052
> Project: Apache Flex
> Issue Type: Bug
> Components: Charts
> Affects Versions: Adobe Flex SDK Previous
> Environment: Affected OS(s): All OS Platforms
> Language Found: English
> Reporter: Adobe JIRA
> Assignee: Alex Harui
> Attachments: chartsNoMerge.css
>
>
> This is a regression in 4.6. It doesn't matter if the modules are Spark or
> not. Works fine in 4.5.1 and below.
> See attached FB project.
> Steps to reproduce:
> 1. Create an app that uses a chart and create a module that also uses a chart.
>
> Actual Results:
>
> TypeError: Error #1009: Cannot access a property or method of a null object
> reference.
> at
> mx.charts.chartClasses::ChartBase/initStyles()[E:\dev\4.y\frameworks\projects\charts\src\mx\charts\chartClasses\ChartBase.as:1862]
>
> Expected Results:
>
> No error and chart loads fine.
>
> Workaround (if any):
>
> Copy chart styles from module's parent styleManager into the module's own
> styleManager.
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