C# - Canvas UI addListener in code is not working

Questions & Answers
1

Hello guys,

I’m trying to add an onClick in code to a canvas UI button and i’ve tried 3 different approaches and none of them are working. Any suggestions on how to make this work?

using UnityEngine;
using UnityEngine.Events;
using UnityEngine.UI;
using System.Collections;
using TriviaQuizGame;
using TriviaQuizGame.Types;

public class OnClick_Button_Canvas : MonoBehaviour
{
    public Button buttonPrefab; //default button

    //private TQGGameController tqgameController;
    private TQGGameController tqgameController2;
    private int index = 0;

    public void start()
    {
        GameObject go = GameObject.Find("GameController");
        //TQGGameController tqgameController = (TQGGameController)go.GetComponent(typeof(TQGGameController));
        TQGGameController tqgameController2 = new TQGGameController();

        //TRIED 3 DIFFERERENT APPROACHES:

        //buttonPrefab.onClick.AddListener(delegate { MyMethod(0); });
        //buttonPrefab.GetComponent<Button>().onClick.AddListener(() => { MyMethod(index);});
        buttonPrefab.onClick.AddListener(MyMethod(0));
    }

    public void MyMethod(int index)
    {
        Debug.Log("Button Clicked");
        tqgameController2.ChooseAnswer(index);
    }
}
2

Figured this out!

There is a build in way to do this:
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.UI;
using System.Collections;
using TriviaQuizGame;
using TriviaQuizGame.Types;
using UnityEngine.EventSystems;

public class OnClick_Button_Canvas : MonoBehaviour, IPointerClickHandler
{
    public Button buttonPrefab; //default button

    //private TQGGameController tqgameController;
    private TQGGameController tqgameController2;
    private int index = 0;

    public void start()
    {
        GameObject go = GameObject.Find("GameController");
        //TQGGameController tqgameController = (TQGGameController)go.GetComponent(typeof(TQGGameController));
        TQGGameController tqgameController2 = new TQGGameController();

    }

    public void OnPointerClick(PointerEventData data)
    {
        Debug.Log("Button Clicked");
        tqgameController2.ChooseAnswer(index);
    }

}