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0

I want to be able to specify the type with an enum and assign the value to the object variable, but I keep getting 'NullReferenceException ..' error message.





I have this simple class:

[System.Serializable()]
public class ObjectValue

 public enum ValueType Null, Integar, Float, String, Boolean 
 [SerializeField, HideInInspector] private ValueType type = ValueType.Null;

 public object value = null;

And by the help of a property drawer script I want to be able to view this class on the Inspector and edit the value depending on the chosen type:

using UnityEditor;
using UnityEngine;

[CustomPropertyDrawer(typeof(ObjectValue))]
public class ObjectValue_Drawer : PropertyDrawer

 public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
 
 return base.GetPropertyHeight(property, label) + 17;
 
 public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
 
 GUI.Box(position, GUIContent.none);
 var typeEnum = property.FindPropertyRelative("type");

 position.height = 17;
 EditorGUI.PropertyField(position, typeEnum);
 position.y += 17;

 var value = property.FindPropertyRelative("value");
 switch (typeEnum.enumValueIndex)
 
 case (int)ObjectValue.ValueType.Null:
 GUI.Label(position, "Null Value Type");
 break;
 case (int)ObjectValue.ValueType.Integar:
 value.intValue = EditorGUI.IntField(position, "Value", value.intValue);
 break;
 case (int)ObjectValue.ValueType.Float:
 value.floatValue = EditorGUI.FloatField(position, "Value", value.floatValue);
 break;
 case (int)ObjectValue.ValueType.String:
 value.stringValue = EditorGUI.TextField(position, "Value", value.stringValue);
 break;
 case (int)ObjectValue.ValueType.Boolean:
 value.boolValue = EditorGUI.Toggle(position, "Value", value.boolValue);
 break;
 
 

c# object unity3d types properties

share|improve this question

edited Mar 22 at 2:05

UnknownUser

asked Mar 22 at 1:37

UnknownUserUnknownUser

427

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Possible duplicate of What is a NullReferenceException, and how do I fix it?
  
  – BugFinder
  Mar 22 at 7:13
  

  
  
  
  

add a comment | 

0

I want to be able to specify the type with an enum and assign the value to the object variable, but I keep getting 'NullReferenceException ..' error message.





I have this simple class:

[System.Serializable()]
public class ObjectValue

 public enum ValueType Null, Integar, Float, String, Boolean 
 [SerializeField, HideInInspector] private ValueType type = ValueType.Null;

 public object value = null;

And by the help of a property drawer script I want to be able to view this class on the Inspector and edit the value depending on the chosen type:

using UnityEditor;
using UnityEngine;

[CustomPropertyDrawer(typeof(ObjectValue))]
public class ObjectValue_Drawer : PropertyDrawer

 public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
 
 return base.GetPropertyHeight(property, label) + 17;
 
 public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
 
 GUI.Box(position, GUIContent.none);
 var typeEnum = property.FindPropertyRelative("type");

 position.height = 17;
 EditorGUI.PropertyField(position, typeEnum);
 position.y += 17;

 var value = property.FindPropertyRelative("value");
 switch (typeEnum.enumValueIndex)
 
 case (int)ObjectValue.ValueType.Null:
 GUI.Label(position, "Null Value Type");
 break;
 case (int)ObjectValue.ValueType.Integar:
 value.intValue = EditorGUI.IntField(position, "Value", value.intValue);
 break;
 case (int)ObjectValue.ValueType.Float:
 value.floatValue = EditorGUI.FloatField(position, "Value", value.floatValue);
 break;
 case (int)ObjectValue.ValueType.String:
 value.stringValue = EditorGUI.TextField(position, "Value", value.stringValue);
 break;
 case (int)ObjectValue.ValueType.Boolean:
 value.boolValue = EditorGUI.Toggle(position, "Value", value.boolValue);
 break;
 
 

c# object unity3d types properties

share|improve this question

edited Mar 22 at 2:05

UnknownUser

asked Mar 22 at 1:37

UnknownUserUnknownUser

427

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Possible duplicate of What is a NullReferenceException, and how do I fix it?
  
  – BugFinder
  Mar 22 at 7:13
  

  
  
  
  

add a comment | 

I want to be able to specify the type with an enum and assign the value to the object variable, but I keep getting 'NullReferenceException ..' error message.





I have this simple class:

[System.Serializable()]
public class ObjectValue

 public enum ValueType Null, Integar, Float, String, Boolean 
 [SerializeField, HideInInspector] private ValueType type = ValueType.Null;

 public object value = null;

And by the help of a property drawer script I want to be able to view this class on the Inspector and edit the value depending on the chosen type:

using UnityEditor;
using UnityEngine;

[CustomPropertyDrawer(typeof(ObjectValue))]
public class ObjectValue_Drawer : PropertyDrawer

 public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
 
 return base.GetPropertyHeight(property, label) + 17;
 
 public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
 
 GUI.Box(position, GUIContent.none);
 var typeEnum = property.FindPropertyRelative("type");

 position.height = 17;
 EditorGUI.PropertyField(position, typeEnum);
 position.y += 17;

 var value = property.FindPropertyRelative("value");
 switch (typeEnum.enumValueIndex)
 
 case (int)ObjectValue.ValueType.Null:
 GUI.Label(position, "Null Value Type");
 break;
 case (int)ObjectValue.ValueType.Integar:
 value.intValue = EditorGUI.IntField(position, "Value", value.intValue);
 break;
 case (int)ObjectValue.ValueType.Float:
 value.floatValue = EditorGUI.FloatField(position, "Value", value.floatValue);
 break;
 case (int)ObjectValue.ValueType.String:
 value.stringValue = EditorGUI.TextField(position, "Value", value.stringValue);
 break;
 case (int)ObjectValue.ValueType.Boolean:
 value.boolValue = EditorGUI.Toggle(position, "Value", value.boolValue);
 break;
 
 

c# object unity3d types properties

share|improve this question

edited Mar 22 at 2:05

UnknownUser

asked Mar 22 at 1:37

UnknownUserUnknownUser

427

[System.Serializable()]
public class ObjectValue

 public enum ValueType Null, Integar, Float, String, Boolean 
 [SerializeField, HideInInspector] private ValueType type = ValueType.Null;

 public object value = null;

using UnityEditor;
using UnityEngine;

[CustomPropertyDrawer(typeof(ObjectValue))]
public class ObjectValue_Drawer : PropertyDrawer

 public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
 
 return base.GetPropertyHeight(property, label) + 17;
 
 public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
 
 GUI.Box(position, GUIContent.none);
 var typeEnum = property.FindPropertyRelative("type");

 position.height = 17;
 EditorGUI.PropertyField(position, typeEnum);
 position.y += 17;

 var value = property.FindPropertyRelative("value");
 switch (typeEnum.enumValueIndex)
 
 case (int)ObjectValue.ValueType.Null:
 GUI.Label(position, "Null Value Type");
 break;
 case (int)ObjectValue.ValueType.Integar:
 value.intValue = EditorGUI.IntField(position, "Value", value.intValue);
 break;
 case (int)ObjectValue.ValueType.Float:
 value.floatValue = EditorGUI.FloatField(position, "Value", value.floatValue);
 break;
 case (int)ObjectValue.ValueType.String:
 value.stringValue = EditorGUI.TextField(position, "Value", value.stringValue);
 break;
 case (int)ObjectValue.ValueType.Boolean:
 value.boolValue = EditorGUI.Toggle(position, "Value", value.boolValue);
 break;
 
 

share|improve this question

edited Mar 22 at 2:05

UnknownUser

asked Mar 22 at 1:37

UnknownUserUnknownUser

427

share|improve this question

edited Mar 22 at 2:05

UnknownUser

asked Mar 22 at 1:37

UnknownUserUnknownUser

427

asked Mar 22 at 1:37

UnknownUserUnknownUser

427

asked Mar 22 at 1:37

UnknownUserUnknownUser

427