unity3d - 在 atals 中找不到 uisprite spriteName

Question

如果在 atals 中找不到 uisprite spriteName，我想显示另一个 spritename，我该怎么办？请给我一些建议，谢谢！

string aSpriteName = GetIconFromAtlas("item_005");
mTreasure2.transform.FindChild("item/ax/prize1").gameObject.GetComponent<UISprite>().spriteName =aSpriteName;


string GetIconFromAtlas(string spriteName)
{
    string aSpriteName = spriteName;
    if (string.IsNullOrEmpty(aSpriteName)) 
        aSpriteName = "item000";
    return aSpriteName;
}

Answer 1

UISpriteData  aData= this.transform.FindChild("Card1/pic/badge").GetComponent<UISprite>().atlas.GetSprite("item_005");
if(aData == null)
    this.transform.FindChild("item/ax/prize1").GetComponent<UISprite>().spriteName = "item000";