button.onClick.AddListener(method); NOT Working

Questions & Answers
1

So I’m creating a very basic menu with 3 buttons. I had the buttons working earlier today to the point that they would do what they should have. Unfortunately, because of some tweaking I did, the onClick function doesn’t seem to be working for me. I would love some insight, thank you!

Code:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class PauseUI : MonoBehaviour {
	private Component[] buttons, screens;
	private Canvas pauseMenu;
	private Button resumeGame, exitGame;
	private Camera characterCam, pauseCam;
	void Start () 
	{
		characterCam = GameObject.Find ("MainCamera").GetComponent<Camera>();
		pauseCam = this.GetComponent<Camera> ();
		buttons = GetComponentsInChildren<Button> ();
		screens = GetComponentsInChildren<Canvas> ();
		foreach (Button button in buttons) {
			if (button.name == "ResumeGame") {
				resumeGame = button;
			}
			if (button.name == "ExitGame") {
				exitGame = button;
			}
		}

		foreach (Canvas canvas in screens) {
			if (canvas.name == "PauseMenu") {
				pauseMenu = canvas;
			}
		}
		characterCam.enabled = true;
		pauseCam.enabled = false;
		pauseMenu.enabled = false;

	}
	
	// Update is called once per frame
	void Update () 
	{
		if (Input.GetKeyDown (KeyCode.Escape)) {
			pauseMenu.enabled = true;
			characterCam.enabled = false;
			pauseCam.enabled = true;
		}
		resumeGame.onClick.AddListener (ResumeGame);
	}

	void ResumeGame(){
		Debug.Log ("ResumeGame has been clicked!");
		pauseMenu.enabled = false;
		characterCam.enabled = true;
		pauseCam.enabled = false;
	}
}
2

try this:
resumeGame.onClick.AddListener (()=>ResumeGame);