Unity ugui determines the solution of clicking on the UI and 3D objects

1. adopt EventSystem.current.IsPointerOverGameObject() Listening in

/****************************************************
	 file ：ISOnclickUI.cs
	 author ：
	 mailbox : [email protected]
	 date ：2019/08/23 8:56   	
	 function ： Determine whether to click on UI On 
*****************************************************/
using UnityEngine;
using UnityEngine.EventSystems;

public class ISOnclickUI : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {
        
    }

    void Update()
    {
        if (Input.GetMouseButtonDown(0) || (Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Began))
        {
#if IPHONE || ANDROID
			if (EventSystem.current.IsPointerOverGameObject(Input.GetTouch(0).fingerId))
#else
            if (EventSystem.current.IsPointerOverGameObject())
#endif
                Debug.Log(" Current touch in UI On ");

            else
                Debug.Log(" There is currently no touch in UI On ");
        }
    }
}

2.UI add to GraphicRaycaster Components , Check whether to click UI

stay UI add to GraphicRaycaster Components , stay update Check whether it is in ui On

1. First get the click
        PointerEventData data = new PointerEventData(EventSystem.current);
        data.pressPosition = Input.mousePosition;
        data.position = Input.mousePosition;
2. Click detection _raycaster It is the radiographic testing component of the object
        List<RaycastResult> results = new List<RaycastResult>();
        _raycaster.Raycast(data, results);

 /****************************************************
    file ：ISOnclickUIRaycast.cs
    author ：
    mailbox : [email protected]
    date ：2019/08/23 9:29   	
    function ：UI add to GraphicRaycaster Components , Check whether to click UI
*****************************************************/
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;

public class ISOnclickUIRaycast : MonoBehaviour
{
    private GraphicRaycaster _raycaster;
    // Start is called before the first frame update
    void Start()
    {
        _raycaster = FindObjectOfType<GraphicRaycaster>();
    }

    // Update is called once per frame
    void Update()
    {
        if (Input.GetMouseButtonDown(0) ){
            if (IsUI())
            {
                Debug.Log(" stay UI On ");
            }
            else
            {
                Debug.Log(" be not in UI On ");
            }
        }
    }
    private bool IsUI()
    {
        // Get Click 
        PointerEventData data = new PointerEventData(EventSystem.current);
        data.pressPosition = Input.mousePosition;
        data.position = Input.mousePosition;
        // Click detection _raycaster It is the radiographic testing component of the object 
        List<RaycastResult> results = new List<RaycastResult>();
        _raycaster.Raycast(data, results);
        return results.Count > 0;
    }
    
}

3. Main camera add PhysicsRaycaster, Detect Click UI still 3D object

Add... To the object to be detected IPointerClickHandler The implementation of the , And then to get PhysicsRaycaster All tested objects , Detect who the name is

/****************************************************
	 file ：IsOnclickUIor3D.cs
	 author ：
	 mailbox : [email protected]
	 date ：2019/08/23 10:02   	
	 function ： Main camera add PhysicsRaycaster, Detect Click UI still 3D object , perhaps 
         Click at the same time 
*****************************************************/
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;

public class IsOnclickUIor3D : MonoBehaviour, IPointerClickHandler
{
    void IPointerClickHandler.OnPointerClick(PointerEventData eventData)
    {
        
        ExecuteAll(eventData);
    }

  

    public void ExecuteAll(PointerEventData eventData)
    {
        List<RaycastResult> results = new List<RaycastResult>();
        EventSystem.current.RaycastAll(eventData, results);
        foreach (RaycastResult result in results)
        {
            if (result.gameObject != gameObject)
            {
                // Click pass to 3d Object click event monitoring 
                ExecuteEvents.Execute(result.gameObject, eventData, ExecuteEvents.pointerClickHandler);
                Debug.Log(" stay UI On "+" Pass on "+ result.gameObject);
            }
            else
            {
                Debug.Log(" stay UI On ");
            }
        }
    }
}