/// <summary>
/// 设置Image
/// </summary>
/// <param name="img"></param>
/// <param name="spriteName"></param>
/// <param name="packageName"></param>
public static void SetImage(this Image img, string spriteName, string packageName = UIConst.defaultPackage)
{
img.sprite = SpriteHelper.GetSprite(spriteName, packageName);
}
