Can a drawable shape have it's size set to fill_parent?

Issue

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).

Solution

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).

Answered By - Siddharth Lele