[FLEX-28282] Mobile List throws RTE on interacting when there are no items in the list.

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: Adobe Flex SDK Previous
• Component/s: Mobile: List
• Environment: Affected OS(s): All OS Platforms; Language Found: English
• Assignee: Adobe JIRA
• Reporter: Adobe JIRA
• Created: 22/Aug/11 02:03
• Updated: 15/Nov/11 16:13
• Resolved: 22/Aug/11 08:40

Description

Steps to reproduce:
1. Insert a List in a mobile project.
2. Launch the project in adl
3. Try to interact with the list, for eg, try to click-drag inside the list.

Actual Results:
RTE is thrown:

Error: Interpolator cannot calculate interpolated values when startValue (NaN) or endValue (NaN) is not a number.
at spark.effects.interpolation::NumberInterpolator/interpolate()[E:\dev\4.y\frameworks\projects\spark\src\spark\effects\interpolation\NumberInterpolator.as:107]
at spark.effects.animation::MotionPath/getValue()[E:\dev\4.y\frameworks\projects\spark\src\spark\effects\animation\MotionPath.as:254]
at spark.effects.animation::Animation/calculateValue()[E:\dev\4.y\frameworks\projects\spark\src\spark\effects\animation\Animation.as:906]
at spark.effects.animation::Animation/doInterval()[E:\dev\4.y\frameworks\projects\spark\src\spark\effects\animation\Animation.as:802]
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 runtime error should be thrown.

SDK version 4.5.2 build 21749

Workaround (if any):