关于unity:UGUI注册组件回调函数

用工具类让Button、Toggle等组件更好的增加不带自定义参数和带自定义参数的UnityAction回调。

/// <summary>    /// 增加按钮点击事件    /// </summary>    /// <param name="btn"></param>    /// <param name="action"></param>    public static void AddOnClickHandler(this Button btn, UnityAction action)    {        if (btn != null)        {            btn.onClick.RemoveAllListeners();            btn.onClick.AddListener(action);        }    }    /// <summary>    /// 增加带参数的按钮点击事件    /// </summary>    /// <typeparam name="T"></typeparam>    /// <param name="btn"></param>    /// <param name="action"></param>    /// <param name="t"></param>    public static void AddOnClickHandler<T>(this Button btn, UnityAction<T> action, T t)    {        if (btn != null)        {            btn.onClick.RemoveAllListeners();            btn.onClick.AddListener(() =>            {                action(t);            });        }    }    /// <summary>    /// 增加Toggle值批改事件    /// </summary>    /// <param name="tog"></param>    /// <param name="action"></param>    public static void AddOnValueChangedHandler(this Toggle tog, UnityAction<bool> action)    {        if (tog != null)        {            tog.onValueChanged.RemoveAllListeners();            tog.onValueChanged.AddListener(action);        }    }    /// <summary>    /// 增加带参数的Toggle值批改事件    /// </summary>    /// <typeparam name="T"></typeparam>    /// <param name="tog"></param>    /// <param name="action"></param>    /// <param name="t"></param>    public static void AddOnValueChangedHandler<T>(this Toggle tog, UnityAction<bool, T> action, T t)    {        if (tog != null)        {            tog.onValueChanged.RemoveAllListeners();            tog.onValueChanged.AddListener(p =>            {                action(p, t);            });        }    }    /// <summary>    /// 增加Slider值批改事件    /// </summary>    /// <param name="slider"></param>    /// <param name="action"></param>    public static void AddOnValueChangedHandler(this Slider slider,UnityAction<float> action)    {        if (slider != null)        {            slider.onValueChanged.RemoveAllListeners();            slider.onValueChanged.AddListener(action);        }    }    /// <summary>    /// 增加带参数的Slider值批改事件    /// </summary>    /// <typeparam name="T"></typeparam>    /// <param name="slider"></param>    /// <param name="action"></param>    /// <param name="t"></param>    public static void AddOnValueChangedHandler<T>(this Slider slider, UnityAction<float, T> action, T t)    {        if (slider != null)        {            slider.onValueChanged.RemoveAllListeners();            slider.onValueChanged.AddListener(p =>            {                action(p, t);            });        }    }    /// <summary>    /// 增加dropdown值批改事件    /// </summary>    /// <param name="dropdown"></param>    /// <param name="action"></param>    public static void AddOnValueChangedHandler(this Dropdown dropdown, UnityAction<int> action)    {        if (dropdown != null)        {            dropdown.onValueChanged.RemoveAllListeners();            dropdown.onValueChanged.AddListener(action);        }    }    /// <summary>    /// 增加带参数的dropdown值批改事件    /// </summary>    /// <typeparam name="T"></typeparam>    /// <param name="dropdown"></param>    /// <param name="action"></param>    /// <param name="t"></param>    public static void AddOnValueChangedHandler<T>(this Dropdown dropdown, UnityAction<int, T> action, T t)    {        if (dropdown != null)        {            dropdown.onValueChanged.RemoveAllListeners();            dropdown.onValueChanged.AddListener(p =>            {                action(p, t);            });        }    }    /// <summary>    /// 增加InputField值批改事件    /// </summary>    /// <param name="input"></param>    /// <param name="action"></param>    public static void AddOnValueChangedHandler(this InputField input, UnityAction<string> action)    {        if (input != null)        {            input.onValueChanged.RemoveAllListeners();            input.onValueChanged.AddListener(action);        }    }    /// <summary>    /// 增加带参数的InputField值的批改事件    /// </summary>    /// <typeparam name="T"></typeparam>    /// <param name="input"></param>    /// <param name="action"></param>    /// <param name="t"></param>    public static void AddOnValueChangedHandler<T>(this InputField input, UnityAction<string, T> action, T t)    {        if (input != null)        {            input.onValueChanged.RemoveAllListeners();            input.onValueChanged.AddListener(p =>            {                action(p, t);            });        }    }    /// <summary>    /// 增加InputField编辑实现事件    /// </summary>    /// <param name="input"></param>    /// <param name="action"></param>    public static void AddOnEndEditHandler(this InputField input, UnityAction<string> action)    {        if (input != null)        {            input.onEndEdit.RemoveAllListeners();            input.onEndEdit.AddListener(action);        }    }    /// <summary>    /// 增加带参数的InputField编辑实现事件    /// </summary>    /// <typeparam name="T"></typeparam>    /// <param name="input"></param>    /// <param name="action"></param>    /// <param name="t"></param>    public static void AddOnEndEditHandler<T>(this InputField input, UnityAction<string, T> action, T t)    {        if (input != null)        {            input.onEndEdit.RemoveAllListeners();            input.onEndEdit.AddListener(p =>            {                action(p, t);            });        }    }