Attach new script to button onclick event in unity3d c#

Question

I am creating a new gameobject from c# and trying to execute a script when clecked. here is the code.

    public void createButton(){
            GameObject kGO = new GameObject ();
            kGO.transform.parent = kCanvas.transform;
            kGO.AddComponent<Image>();
            Button btn = kGO.AddComponent<Button>();
            btn.onClick.AddListener(onButtonClick);
    }

    public void onButtonClick(){
        Debug.Log ("clicked");
    }

but this script is not working, there is not any script attached to the button. .

I have tried these also

btn.onClick.AddListener(() => {onButtonClick()});
or
btn.onClick.AddListener(() => {onButtonClick();});
or
btn.onClick.AddListener(() => onButtonClick());

But nothing is working.

Neeraj Kumar · Accepted Answer · 2015-07-27 04:21:49Z

3

I have updated unity to 5.1.2, now it is working fine. But it still do not reflect in the UI, some people are saying that non persistent unity events does not reflect in the UI, I guess that is true.

answered Jul 27, 2015 at 4:21

Neeraj Kumar

9671 gold badge9 silver badges20 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Hjorthenify · Accepted Answer · 2015-07-26 12:10:18Z

1

What you are trying to do here is add the callback at runtime. If you want to add the callback at design time you should instead click the little plus in the bottom right section of the On Click section in the editor and then select which object that should handle the callback and which function the button should call

answered Jul 26, 2015 at 12:10

Hjorthenify

1977 bronze badges

1 Comment

Neeraj Kumar Over a year ago

I am aware of that, but I need it to call at runtime.

Uri Popov · Accepted Answer · 2015-07-26 13:16:41Z

1

I do it like this. Its a lamba expression .

 btn.onClick.AddListener(() =>
            {
                Debug.Log("IT WORKS");
// Just handle the button clikc inside here
            });

or you could try a completely different aproach :

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using UnityEngine.EventSystems;
    public class TapOnNumber : MonoBehaviour, IPointerClickHandler {


        public void OnPointerClick(PointerEventData e)
        {
           //HandleClicks here
    }

edited Jul 26, 2015 at 13:16

answered Jul 26, 2015 at 13:01

Uri Popov

2,1672 gold badges27 silver badges44 bronze badges

4 Comments

Neeraj Kumar Over a year ago

That is also not working, which version of unity are you using, this script seems to work in 4.6. I am using 5.0.0p3.

Uri Popov Over a year ago

I'm using 4.6 . Sadly I dont know about 5.x They might have changed something. Is it giving you a error of some sorts ? That might help me understand what is going on.

Neeraj Kumar Over a year ago

no errors at all. but not working. I am trying with events also "forum.unity3d.com/threads/…". this is also giving error "Null reference exception". I think I should update to new version. lets see.

Uri Popov Over a year ago

@Neeraj Kumar I updated my Answer with a different approach that might work.

Collectives™ on Stack Overflow

Attach new script to button onclick event in unity3d c#

3 Answers 3

Comments

1 Comment

4 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

1 Comment

4 Comments

Your Answer

Sign up or log in

Post as a guest

Related