Cropping images from a png file in Android

So I’ve never tried to crop single images from a multi-image bitmap ( like these images ), but after some tweeking I ended up with the following code snippet, I’m sure it’s not the only way, but it seems to work out pretty well.

private Drawable getImg( int idx )
{
    InputStream is = getResources().openRawResource( R.raw.myicons );
    BitmapDrawable bm = new BitmapDrawable( is );
    try {
        is.close();
    } catch (IOException e) { /** noop, stream is closed **/ }
    BitmapDrawable img = new BitmapDrawable( Bitmap.createBitmap( bm.getBitmap(), 22 * idx, 0, 22, 22 ) );
    img.setBounds( 0, 0, 40, 40 );

    return img;
}

Of course, you’ll have to supply your own myicons.png in the /res/raw directory and a corresponding size (mine is 22).  You’ll also want to change the code so the BitmapDrawable “bm” is only loaded once, most likely in a constructor, then used multiple times from the above getImg method.