public static void AddListener(GameObject obj, LuaFunction clickFunc, LuaFunction downFunc, LuaFunction upFunc)
{
if (obj.GetComponent <ClickListener>() == null)
{
obj.AddComponent <ClickListener>();
}
ClickListener click = obj.GetComponent <ClickListener>();
click.AddClickListener(() =>
{
clickFunc.Call();
});
click.AddListener(() =>
{
downFunc.Call();
},
() =>
{
upFunc.Call();
});
}