How to capture onBeginDrag() onEndDrag() events for screen,Capture UI events onDrag for screen not for object

Howdy all, I'm new here :}

I'm trying to capture onBeginDrag() onEndDrag() events from EventSystem but having trouble I found this script, I've attached it on MainCamera but nothing happns. I'm trying to capture these events when user swipes screen on mobile. Here's the script code:

 using UnityEngine;
 using UnityEngine.EventSystems;
 
 using System;
 using UnityEngine.Events;
  
 /// <summary>
 /// Container class for Serializable Events in UnityEditor.
 /// </summary>
 public static class Events {
  
         // Additional event-definitions...
  
     [Serializable]
     public class Vector2 : UnityEvent<UnityEngine.Vector2> { }
 }
  
 public class Swipe : MonoBehaviour, IBeginDragHandler, IEndDragHandler, IDragHandler {
  
     Vector2 _lastPosition = Vector2.zero;
  
     public Events.Vector2 OnSwipeStart = new Events.Vector2();
     public Events.Vector2 OnSwipeEnd = new Events.Vector2();
     public Events.Vector2 OnSwipe = new Events.Vector2();
  
     public void OnBeginDrag(PointerEventData eventData) {
         _lastPosition = eventData.position;
         OnSwipeStart.Invoke(eventData.position);
     }
  
     public void OnEndDrag(PointerEventData eventData) {
         OnSwipeEnd.Invoke(eventData.position);
     }
  
     public void OnDrag(PointerEventData eventData) {
         Vector2 direction = eventData.position - _lastPosition;
         _lastPosition = eventData.position;
  
         OnSwipe.Invoke(direction);
     }
 }

 

,Howdy everybody,

New here :} I'm having trouble captureing onBeginDrag() onEndDrag() UI events for screen. I wan't to implement some logic when user swipes on mobile screen but it doesn't seem to work, I guess I'm not attaching script on right object, here the code:

I attached this script to MainCamera, but nothing happens :/

 using System.Diagnostics;
 using System;
 using UnityEngine;
 using UnityEngine.EventSystems;
 using UnityEngine.Events;
 
 public class Swipe : MonoBehaviour, IBeginDragHandler, IEndDragHandler, IDragHandler {
  
     Vector2 _lastPosition = Vector2.zero;
     
     public UnityEvent OnSwipeStart;
     public UnityEvent OnSwipeEnd;
     public UnityEvent OnSwipe;
 
     private void Start() {
         if (OnSwipeStart != null) {
             //OnSwipeStart.AddListener(Ping);
         }
     }
  
     public void OnBeginDrag(PointerEventData eventData) {
         _lastPosition = eventData.position;
         UnityEngine.Debug.Log("OnBeginDrag " + eventData.position);
         OnSwipeStart.Invoke();
     }
  
     public void OnEndDrag(PointerEventData eventData) {
         UnityEngine.Debug.Log("OnEndDrag " + eventData.position);
         OnSwipeEnd.Invoke();
     }
  
     public void OnDrag(PointerEventData eventData) {
         
         Vector2 direction = eventData.position - _lastPosition;
         UnityEngine.Debug.Log("OnDrag " + direction);
         _lastPosition = eventData.position;
  
         OnSwipe.Invoke();
     }
 }