Can a drawable shape have it's size set to fill_parent?
Is it valid for a drawable shape in Android to use fill_parent for it's size?
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<solid
android:color="#666666"/>
<size
android:width="fill_parent"
android:height="fill_parent"/>
</shape>
EDIT
This for the background of ImageButton views. I want the icon for the button to have a circle behind it, but I don't always know what the size of the button will be (different sizes per layout).
Answer
Not really. Not using a ShapeDrawable alone. If you go through the ShapeDrawable document, you will see (you are already using them in the tag) that the only valid attributes there are px, dp, sp, in and mm
A quote from the doc: android:width="...."
Available units are: px (pixels), dp (density-independent pixels), sp (scaled pixels based on preferred font size), in (inches), mm (millimeters) This is true for the attribute:
android:height
This is speculation on my part, but I suspect why the fill_parent attribute value will not work is because a ShapeDrawble, unlike an XML Layout file will not have a parent container.
Leaving out the <size.... /> attribute entirely and setting the layout_width and layout_height on a Widget that will reference the said ShapeDrawable is the only option I suspect (if the fill_parent is to be honored).