You can't do this. The user decides what wall paper s/he wants and has one, single place to change it. You can, however, add new items to the user's saved photos list, which they can choose from when they change their wallpaper.
与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
