protected override AdvancedDropdownItem BuildRoot()
{
if (_tempGuids == null)
{
_tempGuids = new HashSet <string>();
}
_tempGuids.Clear();
string[] sourceAssetSearchPaths = new[] { "Assets" };
_tempGuids.UnionWith(AssetDatabase.FindAssets($"t:{_assetReferenceDropdownState.AssetType.Name}", sourceAssetSearchPaths));
var root = new AssetReferenceDropdownFolderItem("Assets", "Assets", true);
string[] assetGuids = new List <string>(_tempGuids).ToArray();
for (int i = 0; i < assetGuids.Length; i++)
{
string assetPath = AssetDatabase.GUIDToAssetPath(assetGuids[i]);
var assetItem = new AssetReferenceDropdownAssetItem(assetPath, System.IO.Path.GetFileName(assetPath));
//找到父节点
AssetReferenceDropdownFolderItem parent = GetParentDropdownItem(root, assetItem);
if (parent == null)
{
parent = CreateParentDropdownItem(root, assetItem);
}
parent.AddAsset(assetItem);
assetItem.ParentFolder = parent;
}
return(root);
}
