Use this function to get a drawable when you have the image name. Note that the image name does not include the file extension.
public static Drawable GetImage(Context c, String ImageName) {
return c.getResources().getDrawable(c.getResources().getIdentifier(ImageName, "drawable", c.getPackageName()));
}
then just use setBackgroundDrawable
method.
If you only want the ID, leave out the getDrawable part i.e.
return c.getResources().getIdentifier(ImageName, "drawable", c.getPackageName());