Android get ColorBackground

gistfile1.java

TypedValue tv = new TypedValue();
        context.getTheme().resolveAttribute(android.R.attr.colorBackground, tv, true);
        if (tv.type >= TypedValue.TYPE_FIRST_COLOR_INT && tv.type <= TypedValue.TYPE_LAST_COLOR_INT) {
            // windowBackground is a color
            setBackgroundColor(tv.data);
        } else {
            // windowBackground is not a color, probably a drawable
            setBackgroundDrawable(getResources().getDrawable(tv.resourceId));
        }