[5.2]Dropdown , OnValueChanged.

Hey guys:

I have been trying to set up the new dropdown element but I cant make it work as it should:

I am using this script to take the "value" from the dropdown:

Code (csharp):

1.  
2. using UnityEngine;
3. using UnityEngine.UI;
4. using System.Collections;
5.  
6. public class RocketController : MonoBehaviour
7. {
8.     //Canvas
9.     [SerializeField]private Dropdown engineDropD;
10.  
11.     //Elements
12.     private ItemDb.Item engine;
13.     private ItemDb.Item body;
14.     private ItemDb.Item nouse;
15.  
16.     //Items db
17.     [SerializeField]private ItemDb itemDb;
18.  
19.     //Internal vars
20.     private int curEngine = 0;
21.  
22.  
23.     void Update()
24.     {
25.         curEngine = engineDropD.value;
26.         Debug.Log(curEngine);
27.     }
28. }
29.  

I dont think that is efficient at all , I tried to make a public function with an int as parameter and attach it to the OnValueChanged but it always give me a value of 0.

Any suggestions?

See you.

 

So it works for me. Both using the .value and listening to the event. With the event make sure you select the dynamic type not the static.

 

Thanks for the reply.

Well I tried again making a public void:

Code (csharp):

1.  
2. public void SetEngine(int id)
3.     {
4.         Debug.Log(id);
5.         engine = itemDb.items[id];
6.     }
7.  

And assigned in the event:

​

But it keeps giving 0.

What do you mean with the dynamic type?

Thanks!

 

in the On value changed in the inspector. Where you have RocketController.SetEngine. You see how below that you have a field that has a 0. That means that you've told the event system to use a static value (in this case 0).

If you open that drop down again you see some heading "Dynamic parameters" followed by allowed functions (ones that accept the correct parameter being passed) then "Static parameters" followed by functions that accept any sort of parameter (could be strings or anything as the passed value would be the one specified).

You need to select you SetEngine to be from the dynamic list. If done correctly the field with the 0 will disappear as the value is now being set via the dropdown

 

Ok I am stupid!

I saw that a few hours ago with the slider tutorial and just ignored it. Thanks a lot!

 

Here! I'm another stupid!

 

Look at my screenshots to get to understand

 

or you can assign the same thing dynamically from script :

Code (CSharp):

1.  public Dropdown myDropdown; // declare your dropdown
2.  
3.    void Start()
4.     {
5.    
6.  
7.       myDropdown.onValueChanged.AddListener(delegate {
8.             OnMyValueChange(myDropdown);
9.         });
10.      }
11. public void OnMyValueChange(Dropdown dd)
12. {
13. Debug.Log(dd.value);
14. }
15.  
16. void OnDestroy()
17.   {
18.   myDropdown.onValueChanged.RemoveAllListeners();
19.  
20.   }
21.  
22.  

 

2022 and still doing 2016 mistakes