Cancelling Coroutine when Home button presseddown or returned main menu

Questions & Answers
1

some pretext of what I am doing ; I am currently locking down my skill buttons via setting interactable = false in coroutines. Showing text of remaning seconds via textmeshpro and setting them deactive when countdown is over. But I am having problem when home button is pressed/ returned main menu. I would like to refresh my buttons cooldowns and stop coroutines when its pressed. But it is staying in lock position.

this is my cooldown coroutine

static List<CancellationToken> cancelTokens = new List<CancellationToken>();

…

      public IEnumerator StartCountdown(float countdownValue, CancellationToken cancellationToken)
{
    try
    {
        this.currentCooldownDuration = countdownValue;
        // Deactivate myButton
        this.myButton.interactable = false;
        //activate text to show remaining cooldown seconds
        this.m_Text.SetActive(true);
        while (this.currentCooldownDuration > 0 && !cancellationToken.IsCancellationRequested)
        {
             
            this.m_Text.GetComponent<TMPro.TextMeshProUGUI>().text = this.currentCooldownDuration.ToString(); //Showing the Score on the Canvas
            yield return new WaitForSeconds(1.0f);
            this.currentCooldownDuration--;

        }
    }
    finally
    {
        // deactivate text and Reactivate myButton
        // deactivate text
        this.m_Text.SetActive(false);
        // Reactivate myButton
        this.myButton.interactable = true;
    }

} 
             
            
             
            
    static public void cancelAllCoroutines()
{
    Debug.Log("cancelling all coroutines with total of : " + cancelTokens.Count);
    foreach (CancellationToken ca in cancelTokens)
    {
        ca.IsCancellationRequested = true;
    }
} 

    void OnButtonClick()
   {

CancellationToken cancelToken = new CancellationToken();
    cancelTokens.Add(cancelToken);

    Coroutine co;
    co = StartCoroutine(StartCountdown(cooldownDuration, cancelToken));
    myCoroutines.Add(co);

}

this is where I catch when home button pressed/returned main menu. when catch it and pop pauseMenu

      public void PauseGame()
{
    GameObject menu = Instantiate(PauseMenu);
    menu.transform.SetParent(Canvas.transform, false);
    gameManager.PauseGame();
    EventManager.StartListening("ReturnMainMenu", (e) =>
    {
        Cooldown.cancelAllCoroutines();
        Destroy(menu);
        BackToMainMenu();
        EventManager.StopListening("ReturnMainMenu");
    });
    ...

I also stop time when game on the pause

     public void PauseGame() {
    Time.timeScale = 0.0001f;
}
2

This is probably not what you’re looking for but you can stop coroutines with StopCoroutine(coroutine);