Flex 4.5.1 Setting VideoPlayer source to null when it is already null results in a runtime error

Question

I moved my project from Flex 4.1 to Flex 4.5.1 and I noticed that setting VideoPlayer source to null when it is already null results in a runtime error. The same thing applies to the case where you specified as a source url some invalid location (no video found there) and then you try to set the source to null.
Here is the error:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
    at spark.components::VideoDisplay/cleanUpSource()[E:\dev\4.5.1\frameworks\projects\spark\src \spark\components\VideoDisplay.as:1956]
    at spark.components::VideoDisplay/setUpSource()[E:\dev\4.5.1\frameworks\projects\spark\src\s park\components\VideoDisplay.as:1609]
    at spark.components::VideoDisplay/set source()[E:\dev\4.5.1\frameworks\projects\spark\src\spark\components\VideoDisplay.as:1073 ]
    at spark.components::VideoPlayer/set source()[E:\dev\4.5.1\frameworks\projects\spark\src\spark\components\VideoPlayer.as:1362]
The problem is that in the VideoDisplay cleanUpSource function, in some of the cases there properties on the videoObject are modified like this:
videoPlayer.displayObject.visible = true;
without checking if displayObject is null which is done in the rest of the videoDisplay functions.
So when it reaches this line: videoPlayer.displayObject.visible = true; it results in a runtime error.
Is this supposed to work this way now ? I didn't have this problem on Flex 4.1. Not sure if it is a bug, but if it is please report it, I don't have the time right now to be checking in on this.
I fixed it by checking if the source is set, of course... (that won't help me in cases where I provide a wrong or missing video url by mistake.. so it is important to be fixed!)
F

Answer 1

Hi
I found the same error displaying video on flex !
in my simple code, i have :
videoInfoDataVideo.source = videoName;
the full error is :
TypeError: Error #1009: Il est impossible d'accéder à la propriété ou à la méthode d'une référence d'objet nul.
          at spark.components::VideoDisplay/cleanUpSource()[E:\dev\4.5.1\frameworks\projects\spark\src \spark\components\VideoDisplay.as:1956]
          at spark.components::VideoDisplay/setUpSource()[E:\dev\4.5.1\frameworks\projects\spark\src\s park\components\VideoDisplay.as:1609]
          at spark.components::VideoDisplay/set source()[E:\dev\4.5.1\frameworks\projects\spark\src\spark\components\VideoDisplay.as:1073 ]
          at spark.components::VideoPlayer/set source()[E:\dev\4.5.1\frameworks\projects\spark\src\spark\components\VideoPlayer.as:1362]
          at Function/item/private:updateVideo/anonymous/resultGetVideo()[C:\Users\randev\Adobe Flash Builder 4.5\visurbaCMS\src\item.mxml:800]
          at flash.events::EventDispatcher/dispatchEventFunction()
          at flash.events::EventDispatcher/dispatchEvent()
          at HTTPOperation/http://www.adobe.com/2006/flex/mx/internal::dispatchRpcEvent()[E:\dev\4.5.1\frameworks\projects\rpc\src\mx\rpc\http\HTTPService.as:993]
          at mx.rpc::AbstractInvoker/http://www.adobe.com/2006/flex/mx/internal::resultHandler()[E:\dev\4.5.1\frameworks\projects\rpc\src\mx\rpc\AbstractInvoker.as:318]
          at mx.rpc::Responder/result()[E:\dev\4.5.1\frameworks\projects\rpc\src\mx\rpc\Responder.as:5 6]
          at mx.rpc::AsyncRequest/acknowledge()[E:\dev\4.5.1\frameworks\projects\rpc\src\mx\rpc\AsyncR equest.as:84]
          at DirectHTTPMessageResponder/completeHandler()[E:\dev\4.5.1\frameworks\projects\rpc\src\mx\ messaging\channels\DirectHTTPChannel.as:451]
          at flash.events::EventDispatcher/dispatchEventFunction()
          at flash.events::EventDispatcher/dispatchEvent()
          at flash.net::URLLoader/onComplete()
did you solve the problem or someone else?
Thanks