Question

I have a custom component that has an background image.
But when you generate this component by an ItemRenderer in a List, the background image is gone.

What am I doing wrong?

Here is an image. The first element is not generated in a list and has a background image. The other three are part of a List and have no background image.

Here is the code of the MXML of the List

<mx:VBox>
    <solutionItems:displaySolutionItem  />  <!-- This element shows the background image -->                            
    <mx:List selectable="false"
         useRollOver="false" 
         id="listControllers" 
         backgroundAlpha="1"
         dataProvider="{controllers}" >
        <mx:itemRenderer>
            <fx:Component>      
                <solutionItems:displaySolutionItem /> <!-- These elements have nog background image -->                             
            </fx:Component>
        </mx:itemRenderer>
    </mx:List>      
</mx:VBox>

And here is the code of <solutionItems:displaySolutionItem />

<?xml version="1.0" encoding="utf-8"?>
<mx:Canvas 
    xmlns:mx="http://www.adobe.com/2006/mxml"
    backgroundImage="{itemBackGround}"
    backgroundSize="100%">

    <mx:Script>
        <![CDATA[


            [Bindable]
            [Embed(source="assets/Components/ContainerBackgrounds/BoxBg.png", scaleGridLeft="5", scaleGridRight="50", scaleGridTop="5", scaleGridBottom="50")]
            private var itemBackGround:Class;


        ]]>
    </mx:Script>
    <mx:VBox
        paddingBottom="10"
        paddingLeft="10"
        paddingRight="10"
        paddingTop="10">        

        <mx:CheckBox id="chbControllerItem" label="NSL-4601" styleName="titleRed" />                    
        <mx:HBox>                       
            <mx:Image width="67" height="50" id="loader1" source="@Embed(source='assets/Components/ContainerBackgrounds/BoxBg.png')"/> 
            <mx:HBox>
                <mx:VBox>
                    <mx:Label text="Cube size" styleName="formLabel" height="12" />
                    <mx:Label text="Cube config" styleName="formLabel" height="12" />
                    <mx:Label text="Display res" styleName="formLabel" height="12" />
                    <mx:Label text="DPI" styleName="formLabel" height="12" />
                    <mx:Label text="Price" styleName="formLabel" height="12" />
                </mx:VBox>

                <mx:Box>
                    <mx:Label text="50''" height="12" />
                    <mx:Text text="2x3 (1224mm x 3264mm)" height="12" />
                    <mx:Label text="WXGA (1360x768)" height="12" />
                    <mx:Label text="72 dpi" height="12" />
                    <mx:Label text="€ 101.000,00" height="12" />
                </mx:Box>

            </mx:HBox>
        </mx:HBox>
    </mx:VBox>
</mx:Canvas>

It is probably something small, but I can not find it.

Answer 1

The following will get around the problem:

1. Remove the backgroundImage=”{itemBackGround}” from the Canvas element of the itemRenderer

2. Add the following before the VBox in the itemRenderer class. I tested it out and it works fine:

   <mx:Canvas width="100%" height="100%" backgroundImage="{itemBackGround}" backgroundSize="100%"/>
   

If your find a better way, sure update your question to let us know,

Brian