Android scale a Bitmap function

public static Bitmap getResizeBitmap (Bitmap img, int newWidth, int newHeight) {

double ratio = newWidth / img.getWidth();

ratio = (newHeight / img.getHeight()) < ratio ? (newHeight / img.getHeight()) : ratio;

Bitmap b2 = Bitmap.createScaledBitmap(img, (int) (img.getWidth() * ratio), (int) (img.getHeight() * ratio), true);

return b2;

}