Sprite Alpha

[Noi14]

Hi,
I can't change alpha of a sprite when I instanziate a object.

1. GameObject user = NGUITools.AddChild (list, user_selection);
2. GameObject removeUser = user.transform.Find ("RemoveUser").gameObject;
3.  
4.  
5. if (TNManager.isHosting)
6. {
7. Debug.Log("Is host");
8. removeUser.GetComponent< BoxCollider > ().enabled = true; // Work
9. removeUser.GetComponent< UISprite > ().alpha = 1; // Doesn't work
10. }
11.  

Collider is correctly activated but alpha of sprite doesn't have variations. Why?

[ArenMook]

"doesn't have variations"?

If you have a button script on that "removeUser" object, then it will likely overwrite your sprite color when it starts up. Also, why set alpha to 1? Shouldn't it already be 1?

[r.pedra]

I think his button is disable by default and he is "activating" it when the user is the host. So I think the button have an alpha of 0 at the start.

[Noi14]

I've setted prefab with alpha at 0, after I have used tned and if client is Host, alpha will set 1 and will be activated collider

[ArenMook]

Make sure you have the latest NGUI, there was an issue with going form alpha of 0 in some cases in the past.

I'd also advise leaving the prefab in "enabled" state by default, and disabling the collider / hiding the sprite on instantiation instead.

[Noi14]

I'm using the latest version, but if I enter the code in the update at "press a button" instead of "creation" It works:

1. void Update () {
2.                 if(Input.GetKeyDown(KeyCode.L))
3.                 {
4. ...code...
5.                         removeUser.GetComponent< BoxCollider >().enabled = false;
6.                         removeUser.GetComponent< UISprite >().alpha = 0;
7.                 }
8.         }
9.  

I also try to reverse the functioning, that is disable the buttons putting it enabled by default, but have the same problem

[Nicki]

instead of setting alpha to 0,1 it's easier to just disable the UISprite component.