• Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
  • Asset Store
  • Get Unity

UNITY ACCOUNT

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account
  • Blog
  • Forums
  • Answers
  • Evangelists
  • User Groups
  • Beta Program
  • Advisory Panel

Navigation

  • Home
  • Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
    • Blog
    • Forums
    • Answers
    • Evangelists
    • User Groups
    • Beta Program
    • Advisory Panel

Unity account

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account

Language

  • Chinese
  • Spanish
  • Japanese
  • Korean
  • Portuguese
  • Ask a question
  • Spaces
    • Default
    • Help Room
    • META
    • Moderators
    • Topics
    • Questions
    • Users
    • Badges
  • Home /
avatar image
2
Question by dma8 · Feb 09, 2019 at 05:41 AM · gameobjectiostouchdrageventsystem

EventSystem IDragHandler not working on iOS

I cannot figure out why this doesn't work. I'm trying to use the EventSystem to detect Drag events on a GameObject on iOS. Everything works fine in the Editor with a mouse. I have implemented OnBeginDrag, OnDrag, and OnEndDrag as shown in the DragPanel script below. The script is attached to a cube. The cube also has a Box Collider, an Event System, and a Standalone Input Module. The camera has a Physics Raycaster attached. What am I missing? Thanks in advance.

 using UnityEngine;
 using UnityEngine.EventSystems;
 
 public class DragPanel : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler 
 {
     public Material material;
 
     public void OnBeginDrag(PointerEventData eventData)
     {
         Debug.Log("OnBeginDrag started ................................" + eventData.pointerCurrentRaycast.worldPosition);
         material.color = Color.blue;
     }
 
 
     public void OnDrag(PointerEventData eventData)
     {
         Debug.Log("OnDrag called ................................" + eventData.pointerCurrentRaycast.worldPosition);
         material.color = Color.blue;
     }
 
 
     public void OnEndDrag(PointerEventData eventData)
     {
         Debug.Log("OnEndDrag called ................................" + eventData.pointerCurrentRaycast.worldPosition);
         material.color = Color.white;
     }
 
 }




alt text

screen-shot-2019-02-08-at-102804-pm.png (389.7 kB)
Comment
Add comment
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users

1 Reply

· Add your reply
  • Sort: 
avatar image
0

Answer by dma8 · Feb 16, 2019 at 12:57 AM

Posting my solution in case anyone else is having trouble with this. For some reason the Max Ray Intersections on the Physics Raycaster must be set to zero to work on iOS.

Comment
Add comment · Show 1 · Share
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users
avatar image KepAmun · Mar 29, 2019 at 04:59 PM 0
Share

I have found the same issue and constraint when building for WebGL. If the $$anonymous$$ax Ray Intersections on the Physics Raycaster is set to anything other than zero, no events are reported. Unity Editor version 2018.3.10f1

Your answer

Hint: You can notify a user about this post by typing @username

Up to 2 attachments (including images) can be used with a maximum of 524.3 kB each and 1.0 MB total.

Welcome to Unity Answers

The best place to ask and answer questions about development with Unity.

To help users navigate the site we have posted a site navigation guide.

If you are a new user to Unity Answers, check out our FAQ for more information.

Make sure to check out our Knowledge Base for commonly asked Unity questions.

If you are a moderator, see our Moderator Guidelines page.

We are making improvements to UA, see the list of changes.



Follow this Question

Answers Answers and Comments

204 People are following this question.

avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image

Related Questions

Short touch delay using either Input or EventSystem classes 1 Answer

Input across scripts 1 Answer

Simultaneous Touch Drag Controls 0 Answers

Multitouch drag object 0 Answers

Touch Drag GameObject Found 1 Answer

  • Anonymous
  • Sign in
  • Create
  • Ask a question
  • Spaces
  • Default
  • Help Room
  • META
  • Moderators
  • Explore
  • Topics
  • Questions
  • Users
  • Badges