The Group container must be explicit indicated width and height.
the group can't use relative properties to set its size.
this is the code :
<s:List left="0" right="0" top="0" bottom="0" dataProvider="{new
ArrayList([1,2,3,4,5,6,7])}" verticalScrollPolicy="off">
<s:layout>
<s:HorizontalLayout gap="8" columnWidth="200"/> // columnWidth is not useful
~
</s:layout>
<s:itemRenderer>
<fx:Component>
// <s:Group left="0" right="0" top="0" bottom="0"> // the group will never
show
<s:Group width="300" height="400"> // I have to set the width and height
explicit but it can't adapt all the kinds of device screen
<s:Rect left="0" right="0" top="0" bottom="0">
<s:fill>
<s:SolidColor color="0x381128" />
</s:fill>
</s:Rect>
</s:Group>
</fx:Component>
</s:itemRenderer>
</s:List>
