How to use IPointerUpHandler

Hello guys i have little problem with IPointerUpHandler Interface. i have added this script to my gameobject and Raycaster to my game camera. But i really dont know why it isnt working.

Code (CSharp):

1.  
2. using UnityEngine;
3. using System.Collections;
4. using UnityEngine.EventSystems;
5.  
6. public class IEventTest: MonoBehaviour, IPointerUpHandler
7. {
8.  
9.     public void OnPointerUp(PointerEventData eventData)
10.     {
11.         Debug.Log("Button " + eventData.pointerId + " up");
12.     }
13. }
14.  

 

Hello!

Hope it is not to late. I had exactly the same problem. I don't know why it is not working. Just use IPointerClickHandler and its interface OnPointerClick.

It reacts to the release/up event, so I guess it is the same as the PointerUp event.

 

Maybe @SimonDarksideJ can help. He is expert on events! =)

 

Do you have an appropriate collider on the game object this script is attached to?

 

Would need some more details about your situation, a few queries:

• Do you have an "event system" in the scene (required for all UI style events)
• Put another Debug.Log message in without using the pointer data, to see if the event is firing. If the eventdata is null your Debug message wouldn't appear.
• What are you attaching this script to? A UI component or other 3D object?
• If it's a 3D object, have you attached the Physics raycaster to your camera?

Basically need more details about your scene to answer.

(p.s @BoredMormon the UI events don't use collides , just raycasting)

 

Depends. If you are using a physics ray caster attached to the camera you need the appropriate colliders. If you are using a graphics ray caster attached to a canvas you don't need colliders.

The rest of your post is spot on.

 

That is a fair point! Thanks for that.

 

Well, I've just started to use the EventSystem, and I had a similar problem. When I implemented the IPointerClickHandler interface, everything worked well. When I implement IPointerUpHandler or IPointerDownHandler on their own, they simply don't work!! When I implement both IPointerUpHandler AND IPointerDownHandler, they both work fine! looks like a Unity bug to me - why have separate interfaces if both have to be implemented for them to work?
We should just have the IPointerClickHandler which requires OnPointerUp, OnPointerDown and OnPointerClick implementations (left empty if not needed).

 

That's weird. Went to Unity to check.

Looks like IPointerDown works on its own. It appears IPointerUp needs something to detect the pointer down event first.

According to the docs this might actually be intended behaviour.

Looks like you can implement IPointerDown or write your own EventSystem

 

i have little bit same issue pointerdown calls but pointerup no call on clicking.. anyone have solution?

 

how can I implement the functionality of shop system like in clash of clans into unity project

 

It says here https://docs.unity3d.com/2018.2/Documentation/ScriptReference/EventSystems.IPointerUpHandler.html

You need to also implement the IPointerDownHandler to make the IPointerUpHandler work.