Android: Scale a Drawable or background image?

Question

Hi,

On a layout I want to scale the background image (keeping its aspect ratio) to the space allocated when the page gets created. Anyone have any idea how to do this?

I am using layout.setBackgroundDrawable() and am using a BitmapDrawable to setGravity for clipping and filling, but don't see any option for scaling.

Sam

Answer 1

you'll have to pre-scale that drawable before you use it as a background

Answer 2

Haven't tried to do exactly what you want, but you can scale an ImageView using android:scaleType="fitXY"
and it will be sized to fit into whatever size you give the ImageView.

So you could create a FrameLayout for your layout, put the ImageView inside it, and then whatever other content you need in the FrameLayout as well w/ a transparent background.

<FrameLayout  
android:layout_width="fill_parent" android:layout_height="fill_parent">

  <ImageView 
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:src="@drawable/back" android:scaleType="fitXY" />

  <LinearLayout>your views</LinearLayout>
</FrameLayout>