C# - Draggable 4.6 UI?

Questions & Answers
1

How can i make an object of the new UI, like an button, panel or image draggable? That’s for an inventory system, someone can help me with that? :slight_smile:

2

  • Make your UI object

  • Choose Add Component → Event → Event Trigger

  • Add a new trigger, choose OnDrag

  • Add a listener and call the following script on the dragable object

    public void OnDrag(){
    transform.position = Input.mousePosition;
    }

3

This works, but it breaks because it assumes the drag event was instigated by the mouse. For reference, here is the component I wrote:

using UnityEngine;
using UnityEngine.UI;

[RequireComponent(typeof(RectTransform))]
public class PanelDragBehavior : MonoBehaviour
{
    private RectTransform rect;

    public void Awake()
    {
        rect = GetComponent<RectTransform>();
    }

    public void OnDrag(UnityEngine.EventSystems.BaseEventData eventData)
    {
        var pointerData = eventData as UnityEngine.EventSystems.PointerEventData;
        if (pointerData == null) { return; }


        var currentPosition = rect.position;
        currentPosition.x += pointerData.delta.x;
        currentPosition.y += pointerData.delta.y;
        rect.position = currentPosition;
    }
}
4

Simply you can use LeanTouch Lean Dragabble UI script. It available for free in unity store.