get activity from context

ContextUtil

    /**
     * get Activity from context
     * @param context
     * @return
     */
    public static Activity getActivity(Context context) {
        while (context instanceof ContextWrapper) {
            if (context instanceof Activity) {
                return (Activity)context;
            }
            context = ((ContextWrapper)context).getBaseContext();
        }
        return null;
    }