【Unity3D ugui】简单控件的事件监听

刚开始学Unity3D，最近在看UI这一块，使用Unity编辑器进行事件绑定，总感觉怪怪的，不如使用代码进行监听来得直观。

首先是资源层次结构

然后在Panel上挂Test脚本，脚本里使用委托进行事件监听

using UnityEngine;
using UnityEngine.UI;

public class Test : MonoBehaviour
{
    private GameObject buttonObj;
    private GameObject toggleObj;
    private GameObject toggleGroupObj;
    private Button button;
    private Toggle toggle;
    private ToggleGroup toggleGroup;

    void Awake()
    {
        buttonObj = gameObject.transform.FindChild("Button").gameObject;
        toggleObj = gameObject.transform.FindChild("Toggle").gameObject;
        toggleGroupObj = gameObject.transform.FindChild("ToggleGroup").gameObject;
        button = buttonObj.GetComponent();
        toggle = toggleObj.GetComponent();
        toggleGroup = toggleGroupObj.GetComponent();
    }

    void Start()
    {
        //lambda表达式转换为委托类型
        toggle.onValueChanged.AddListener((bool value) => OnToggleClick(toggle, value));

        //匿名委托调用
        button.onClick.AddListener(delegate()
        {
            Debug.Log("toggle is " + (toggle.isOn ? "On" : "Off"));
        });
    }

    public void OnToggleClick(Toggle toggle, bool value)
    {
        Debug.Log("toggle change " + (value ? "On" : "Off"));
    }
}