通过拖拽prefab来存储相应的路径

 更新了一下，支持数组和嵌套数据结构。

 

 1 using UnityEngine;

 2 using System.Collections;

 3 using UnityEditor;

 4 using System.Reflection;

 5 

 6 [CustomPropertyDrawer(typeof(ObjectToPathAttribute))]

 7 public class ObjectToPathDrawer : PropertyDrawer

 8 {

 9 

10     public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)

11     {

12         Object target = property.serializedObject.targetObject;

13         ObjectToPathAttribute otpa = attribute as ObjectToPathAttribute;

14         System.Type objType = otpa._objType;

15 

16         string path = property.stringValue;

17         position.width = EditorGUIUtility.labelWidth * 2.0f / 3.0f;

18 

19         EditorGUI.LabelField(position, label);

20         position.x += EditorGUIUtility.labelWidth * 2.0f / 3.0f;

21 

22         Object _obj = null;

23         bool _foundObj = true;

24         if (!string.IsNullOrEmpty(path))

25         {

26             _obj = AssetDatabase.LoadMainAssetAtPath(path);

27             if (_obj == null)

28             {

29                 _foundObj = false;

30             }

31         }

32         _obj = EditorGUI.ObjectField(position, _obj, objType, false);

33         if (_obj != null)

34         {

35             path = AssetDatabase.GetAssetPath(_obj);

36         }

37         else

38         {

39             if (_foundObj)

40             {

41                 path = string.Empty;

42             }

43         }

44         position.x += EditorGUIUtility.labelWidth * 2.0f / 3.0f;

45         position.width = EditorGUIUtility.labelWidth;

46         property.stringValue = EditorGUI.TextField(position, path);

47     }

48 }

ObjectToPathDrawer

 1 using UnityEngine;

 2 using System.Collections;

 3 

 4 public class ObjectToPathAttribute : PropertyAttribute

 5 {

 6     public System.Type _objType;

 7     public ObjectToPathAttribute(System.Type t)

 8     {

 9         _objType = t;

10     }

11 }

ObjectToPathAttribute

1 using UnityEngine;

2 using System.Collections;

3 

4 public class TestClass : MonoBehaviour

5 {

6     [ObjectToPath(typeof(GameObject))]

7     public string _prefabPath;

8 }

TestClass

 

 

使用上面的代码可以通过拖拽一个prefab的方式把相应的路径直接存储到public string _itemPerfabPath里，省去键盘输入步骤。不支持场景中的GameObject的拖入。

截图如下：

当prefab为空的时候的截图如下：