OnTaskClick doesnt work for me.

Unity Engine
,
1

I wanna make a menu in my game if hold down Q and press the button for an object that the menu falls away and I get the object in hand.
Here is the script:

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

public class InventoryFlashLight : MonoBehaviour
{
    public GameObject Item;
    public GameObject UiItem;
    public bool paused;
    public Button yourButton;
    private FirstPersonAIO myMove;


    void Start()
    {
        myMove = GetComponent<FirstPersonAIO>();
        Button btn = yourButton.GetComponent<Button>();
        btn.onClick.AddListener(TaskOnClick);
    }


    void TaskOnClick()
    {
        if (paused)
        {
            Time.timeScale = 0;
        }

        if (!paused)
        {
            Time.timeScale = 1;
        }

        paused = !paused;
        myMove.enabled = true;
        Cursor.visible = false;
        Cursor.lockState = CursorLockMode.Locked;
        UiItem.SetActive(false);
        Item.SetActive(true);
    }


}

here are the screenshots of insipector.

6629962--755926--upload_2020-12-16_22-40-3.jpg
6629962--755926--upload_2020-12-16_22-40-3.jpg1920×1080 402 KB

The on click doesn’t show on click task

It gives me this error

NullReferenceException: Object reference not set to an instance of an object
InventoryFlashLight.TaskOnClick () (at Assets/Script/InventoryFlashLight.cs:36)
UnityEngine.Events.InvokableCall.Invoke () (at <0f484ee213264ebc81764f2bdb13f359>:0)
UnityEngine.Events.UnityEvent.Invoke () (at <0f484ee213264ebc81764f2bdb13f359>:0)
UnityEngine.UI.Button.Press () (at D:/Unity/2020.2.0a11/Editor/Data/Resources/PackageManager/BuiltInPackages/com.unity.ugui/Runtime/UI/Core/Button.cs:68)
UnityEngine.UI.Button.OnPointerClick (UnityEngine.EventSystems.PointerEventData eventData) (at D:/Unity/2020.2.0a11/Editor/Data/Resources/PackageManager/BuiltInPackages/com.unity.ugui/Runtime/UI/Core/Button.cs:110)
UnityEngine.EventSystems.ExecuteEvents.Execute (UnityEngine.EventSystems.IPointerClickHandler handler, UnityEngine.EventSystems.BaseEventData eventData) (at D:/Unity/2020.2.0a11/Editor/Data/Resources/PackageManager/BuiltInPackages/com.unity.ugui/Runtime/EventSystem/ExecuteEvents.cs:50)
UnityEngine.EventSystems.ExecuteEvents.Execute[T] (UnityEngine.GameObject target, UnityEngine.EventSystems.BaseEventData eventData, UnityEngine.EventSystems.ExecuteEvents+EventFunction`1[T1] functor) (at D:/Unity/2020.2.0a11/Editor/Data/Resources/PackageManager/BuiltInPackages/com.unity.ugui/Runtime/EventSystem/ExecuteEvents.cs:262)
UnityEngine.EventSystems.EventSystem:Update() (at D:/Unity/2020.2.0a11/Editor/Data/Resources/PackageManager/BuiltInPackages/com.unity.ugui/Runtime/EventSystem/EventSystem.cs:384)

I don’t know what it means. or how to solve it my English isn’t very great. Please help me. Thanks in advance

2

NullReferenceException means that you are trying to “dereference” a variable that doesn’t have a real value (“dereference” essentially means any time you write a period after the variable, as in “myVariable.something”).

Based on the line number, the variable in question must be “myMove”. You are setting the value of myMove in your Start() function to GetComponent(), so my guess is that you forgot to add a “FirstPersonAIO” component onto your object. Then this variable gets the value “null” because it can’t find the component you want.