unity 确定与取消对话框

UnityEvent本质上是继承自UnityEventBase的类，它的AddListener()方法能够注册UnityAction，RemoveListener能够取消注册UnityAction，还有Invoke()方法能够一次性调用所有注册了的UnityAction。

对话框代码

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;

public class DialogBoxMgr : MonoBehaviour {

    public UnityEvent onEvOk =new UnityEvent() ;
    public UnityEvent onEvCancel =new UnityEvent() ;

    // Use this for initialization
    void Start () {
        
    }
    
    // Update is called once per frame
    void Update () {
        
    }

    public void OnBtnOk()
    {
        onEvOk.Invoke();
    }

    public void OnBtnNot()
    {
        onEvCancel.Invoke();
    }
}

如何调用

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class DialogTest : MonoBehaviour {
    public DialogBoxMgr m_dialog;
    // Use this for initialization
    void Start () {
        m_dialog.onEvOk.AddListener(() => { LogMsg("Ok"); });
        m_dialog.onEvCancel.AddListener(() => { LogMsg("Cancel"); });
    }
    
    // Update is called once per frame
    void Update () {
        
    }

    void LogMsg(string msg)
    {
        Debug.Log(msg);
    }
}

​