UnityEvent绑定过程中,放在Start()中绑定会报错(通过脚本添加UnityEvent事件脚本,绑定)
绑定事件放在OnEnable()中不会报错,但是依然不可以立刻添加UnityEvent事件脚本紧接着立刻绑定事件。
或者在Start()添加UnityEvent事件的脚本与绑定间隔时间长一些也不会报错。
示例:
创建点击对象方法
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.EventSystems;
public class My3DObjOnClick : MonoBehaviour
{
public UnityEvent events;
private void OnMouseUpAsButton()
{
// if (EventSystem.current.IsPointerOverGameObject()) return;
events.Invoke();
}
}
报错案例1:
创建绑定方法:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
public class Test : MonoBehaviour
{
public Transform tar;//
private void Start()
{
add_click_listener(Redian1_Click);
}
public void add_click_listener( UnityAction onclick)
{
tar.gameObject .AddComponent<My3DObjOnClick>();
tar.GetComponent<My3DObjOnClick>().events.AddListener(onclick);
}
private void Redian1_Click()
{
Debug.Log("Redian1_Click");
}
}
报错案例2:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
public class Test : MonoBehaviour
{
public Transform tar;
private void Start()
{
add_click_listener(Redian1_Click);
}
public void add_click_listener( UnityAction onclick)
{
tar.gameObject .AddComponent<My3DObjOnClick>();
StartCoroutine("ceshi", onclick);
}
IEnumerator ceshi(UnityAction onclick)
{
yield return new WaitForEndOfFrame ();
//如果将时间延长,延长到5s则不会报错
// yield return new WaitForSeconds (5);
tar.GetComponent<My3DObjOnClick>().events.AddListener(onclick);
}
private void Redian1_Click()
{
Debug.Log("Redian1_Click");
// panelModel1_UICtrl.Open_Redian1();
}
}
报错案例3:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
public class Test : MonoBehaviour
{
public Transform tar;
private void OnEnable()
{
add_click_listener(Redian1_Click);
}
public void add_click_listener( UnityAction onclick)
{
tar.gameObject .AddComponent<My3DObjOnClick>();
tar.GetComponent<My3DObjOnClick>().events.AddListener(onclick);
}
private void Redian1_Click()
{
Debug.Log("Redian1_Click");
}
}
不报错案例1:
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
public class Test : MonoBehaviour
{
public Transform tar;
private void OnEnable()
{
add_click_listener(Redian1_Click);
}
public void add_click_listener( UnityAction onclick)
{
tar.gameObject .AddComponent<My3DObjOnClick>();
StartCoroutine("ceshi", onclick);
}
IEnumerator ceshi(UnityAction onclick)
{
yield return new WaitForEndOfFrame ();
tar.GetComponent<My3DObjOnClick>().events.AddListener(Redian1_Click);
}
private void Redian1_Click()
{
Debug.Log("Redian1_Click");
}
}
不报错案例2:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
public class Test : MonoBehaviour
{
public Transform tar;
private void Start()
{
add_click_listener(Redian1_Click);
}
public void add_click_listener( UnityAction onclick)
{
tar.gameObject .AddComponent<My3DObjOnClick>();
StartCoroutine("ceshi", onclick);
}
IEnumerator ceshi(UnityAction onclick)
{
yield return new WaitForSeconds (5);
tar.GetComponent<My3DObjOnClick>().events.AddListener(onclick);
}
private void Redian1_Click()
{
Debug.Log("Redian1_Click");
// panelModel1_UICtrl.Open_Redian1();
}
}
不报错案例3:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
public class Test : MonoBehaviour
{
public Transform tar;
private void OnEnable()
{
tar.gameObject .AddComponent<My3DObjOnClick>();
}
private void Update()
{
if (Input.GetKeyDown(KeyCode.W))
{
tar.GetComponent<My3DObjOnClick>().events.AddListener(Redian1_Click);
}
}
private void Redian1_Click()
{
Debug.Log("Redian1_Click");
}
}