[FLEX-28633] Throwing a SpinnerList with no dataProvider causes an RTE

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Adobe Flex SDK Previous
• Component/s: Mobile: SpinnerList
• Environment: Affected OS(s): All OS Platforms; Affected OS(s): All OS Platforms; Language Found: English
• Assignee: Adobe JIRA
• Reporter: Adobe JIRA
• Created: 27/Sep/11 12:40
• Updated: 29/Sep/11 12:04
• Resolved: 28/Sep/11 12:01

Description

Steps to reproduce:
1. Create a flex mobile project with this application:

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark">

<s:SpinnerListContainer>
<s:SpinnerList
id="peopleList"
width="300"
height="150"
wrapElements="false">
</s:SpinnerList>
</s:SpinnerListContainer>

</s:Application>

2. Throw the empty SpinnerList
3.

Actual Results:

RTE after a short time:

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at spark.layouts::VerticalSpinnerLayout/http://www.adobe.com/2006/flex/mx/internal::getElementNearestScrollPosition()[E:\dev\4.y\frameworks\projects\mobilecomponents\src\spark\layouts\VerticalSpinnerLayout.as:386]
at spark.layouts::VerticalSpinnerLayout/getIndexAtVerticalCenter()[E:\dev\4.y\frameworks\projects\mobilecomponents\src\spark\layouts\VerticalSpinnerLayout.as:432]
at spark.components::SpinnerList/touchInteractionEnd()[E:\dev\4.y\frameworks\projects\mobilecomponents\src\spark\components\SpinnerList.as:436]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.core::UIComponent/dispatchEvent()[E:\dev\4.y\frameworks\projects\framework\src\mx\core\UIComponent.as:13151]
at spark.components.supportClasses::TouchScrollHelper/dispatchBubblingEventOnMouseDownedDisplayObject()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\supportClasses\TouchScrollHelper.as:870]
at spark.components.supportClasses::TouchScrollHelper/http://www.adobe.com/2006/flex/mx/internal::endTouchScroll()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\supportClasses\TouchScrollHelper.as:898]
at spark.components::Scroller/throwEffect_effectEndHandler()[E:\dev\4.y\frameworks\projects\spark\src\spark\components\Scroller.as:3404]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.effects::Effect/effectEndHandler()[E:\dev\4.y\frameworks\projects\framework\src\mx\effects\Effect.as:1856]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.effects::EffectInstance/finishEffect()[E:\dev\4.y\frameworks\projects\framework\src\mx\effects\EffectInstance.as:806]
at spark.effects.supportClasses::AnimateInstance/finishEffect()[E:\dev\4.y\frameworks\projects\spark\src\spark\effects\supportClasses\AnimateInstance.as:873]
at spark.effects.supportClasses::AnimateInstance/animationEnd()[E:\dev\4.y\frameworks\projects\spark\src\spark\effects\supportClasses\AnimateInstance.as:812]
at spark.effects.animation::Animation/sendAnimationEvent()[E:\dev\4.y\frameworks\projects\spark\src\spark\effects\animation\Animation.as:861]
at spark.effects.animation::Animation/end()[E:\dev\4.y\frameworks\projects\spark\src\spark\effects\animation\Animation.as:980]
at spark.effects.animation::Animation/doInterval()[E:\dev\4.y\frameworks\projects\spark\src\spark\effects\animation\Animation.as:808]
at spark.effects.animation::Animation$/timerHandler()[E:\dev\4.y\frameworks\projects\spark\src\spark\effects\animation\Animation.as:702]
at flash.utils::Timer/_timerDispatch()
at flash.utils::Timer/tick()

Expected Results:

No RTE

Workaround (if any):