UI Image and OnMouseDown not working

Question

I made an UI Image as button and I use a script for click:

 void Start() {
 }

 void Update() {
 }
 
 void OnMouseDown() {
     Application.Quit();
 }

UI Image has the script.

Answer 1

Best Answer

Answer by Free Arm Studios · Oct 12, 2015 at 07:45 AM

I was literally just experiencing t$$anonymous$$s same problem. I found that if I put a Button component on it, that'll fix it right up.

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Answer 2

Answer by NateJC · Dec 20, 2016 at 04:38 AM

For UGUI UI objects, instead of OnMouseDown, use OnPointerDown:

 using UnityEngine;
 using System.Collections;
 using UnityEngine.UI;
 using UnityEngine.EventSystems; // Required when using Event data.
 
 public class ExampleClass : MonoBehaviour, IPointerDownHandler // required interface when using the OnPointerDown method.
 {
     public void OnPointerDown (PointerEventData eventData) 
     {
         Debug.Log (t$$anonymous$$s.gameObject.name + " Was Clicked.");
     }
 }

Alternatively, t$$anonymous$$s can also be handled in the Inspector by adding an Event Trigger component.

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lionelmarr · Jul 14, 2020 at 06:25 PM 0

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After two days struggling with the problem, I would just like to stress the ease and satisfaction of adding an Event Trigger component to the game object. (I had seen this answer but not acted on it because it didn't sink in).

To expand a bit: Add component > Event > Event Trigger; Add a new event (I added Pointer Click); Click on the + button, then drag the object into the GameObject Slot In my case, the same object as I was adding the Event Trigger component to); Click on the "No Function" field to choose a function that will be called on clicking, which will be the OnMouseDown() function on the script that wasn't working before you added the Event Trigger component.

yangjon1997 · Nov 26, 2022 at 10:36 AM 0

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Hi,

I want to ask why for UGUI UI objects we should use OnPointerDown instead or OnMouseDown? Asking because currently working on a project where OnMouseDown isnt working but OnPointerDown is.

Thanks !

Answer 3

Answer by xarlybyte · Apr 06, 2020 at 10:06 AM

,you need a object w$$anonymous$$t a Event System component. Grap$$anonymous$$ic raycaster added to your canvas and raycast target enabled on your ui element you wanna the click

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UI Image and OnMouseDown not working

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