NGUI研究院之三种方式监听NGUI的事件方法（七）

	void OnClick()
	{
		Debug.Log("Button is Click!!!");
	}

	void Send ()
	{
		if (string.IsNullOrEmpty(functionName)) return;
		if (target == null) target = gameObject;

		if (includeChildren)
		{
			Transform[] transforms = target.GetComponentsInChildren<Transform>();

			for (int i = 0, imax = transforms.Length; i < imax; ++i)
			{
				Transform t = transforms[i];
				t.gameObject.SendMessage(functionName, gameObject, SendMessageOptions.DontRequireReceiver);
			}
		}
		else
		{
			target.SendMessage(functionName, gameObject, SendMessageOptions.DontRequireReceiver);
		}
	}

	void Awake () 
	{	
                //获取需要监听的按钮对象
		GameObject button = GameObject.Find("UI Root (2D)/Camera/Anchor/Panel/LoadUI/MainCommon/Button");
                //设置这个按钮的监听，指向本类的ButtonClick方法中。
		UIEventListener.Get(button).onClick = ButtonClick;
	}

        //计算按钮的点击事件
	void ButtonClick(GameObject button)
	{
		Debug.Log("GameObject " + button.name);

	}

public class UIEventListener : MonoBehaviour
{
	public delegate void VoidDelegate (GameObject go);
	public delegate void BoolDelegate (GameObject go, bool state);
	public delegate void FloatDelegate (GameObject go, float delta);
	public delegate void VectorDelegate (GameObject go, Vector2 delta);
	public delegate void StringDelegate (GameObject go, string text);
	public delegate void ObjectDelegate (GameObject go, GameObject draggedObject);
	public delegate void KeyCodeDelegate (GameObject go, KeyCode key);

	public object parameter;

	public VoidDelegate onSubmit;
	public VoidDelegate onClick;
	public VoidDelegate onDoubleClick;
	public BoolDelegate onHover;
	public BoolDelegate onPress;
	public BoolDelegate onSelect;
	public FloatDelegate onScroll;
	public VectorDelegate onDrag;
	public ObjectDelegate onDrop;
	public StringDelegate onInput;
	public KeyCodeDelegate onKey;

	void OnSubmit ()				{ if (onSubmit != null) onSubmit(gameObject); }
	void OnClick ()					{ if (onClick != null) onClick(gameObject); }
	void OnDoubleClick ()			{ if (onDoubleClick != null) onDoubleClick(gameObject); }
	void OnHover (bool isOver)		{ if (onHover != null) onHover(gameObject, isOver); }
	void OnPress (bool isPressed)	{ if (onPress != null) onPress(gameObject, isPressed); }
	void OnSelect (bool selected)	{ if (onSelect != null) onSelect(gameObject, selected); }
	void OnScroll (float delta)		{ if (onScroll != null) onScroll(gameObject, delta); }
	void OnDrag (Vector2 delta)		{ if (onDrag != null) onDrag(gameObject, delta); }
	void OnDrop (GameObject go)		{ if (onDrop != null) onDrop(gameObject, go); }
	void OnInput (string text)		{ if (onInput != null) onInput(gameObject, text); }
	void OnKey (KeyCode key)		{ if (onKey != null) onKey(gameObject, key); }

	/// <summary>
	/// Get or add an event listener to the specified game object.
	/// </summary>

	static public UIEventListener Get (GameObject go)
	{
		UIEventListener listener = go.GetComponent<UIEventListener>();
		if (listener == null) listener = go.AddComponent<UIEventListener>();
		return listener;
	}
}