当我们在使用unity自带的Toggle组件的时候，我们是通过Toggle组件上的isOn属性得知是开启我们的功能面板还是关闭，这时候通常我们会给toggle绑定一个方法，当我们点击toggle的时候，调用方法，同时播放点击音效，可是有些时候，需要我们在切换界面的时候通过其它方法来关闭我们的属性isOn为false，方便我们下次点击的时候，isOn为true，这时候，我们单独对toggle的isOn属性赋值时会调用一次我们的方法，同时还会播放一次声音，恶心的事情就此发生，所以在项目中不得不重写了此组件，以方便项目中多处使用，下面是MyToggle脚本，挂载到对象身上即可，和unity自带的Toggle用法一样，只是在手动设置isOn属性的时候不会自动调用方法。

using System;using UnityEditor;using UnityEngine;using UnityEngine.Events;using UnityEngine.EventSystems;using UnityEngine.Serialization;using UnityEngine.UI;/// 
/// 自定义Toggle组件/// 
[RequireComponent(typeof(RectTransform))]public class MyToggle : Selectable, IEventSystemHandler, IPointerClickHandler, ISubmitHandler, ICanvasElement{    /// 
    /// toggle为true时切换显示的底图    /// 
    public Graphic m_ChangeImage;    [SerializeField]    [FormerlySerializedAs("m_IsActive")]    private bool m_IsOn;    public MyToggle.ToggleTransition toggleTransition = MyToggle.ToggleTransition.Fade;    public Toggle.ToggleEvent onValueChanged = new Toggle.ToggleEvent();        /// 
    /// 设置ison属性（自动调用一次方法）    /// 
    public bool isOn    {        get        {            return this.m_IsOn;        }        set        {            this.Set(value);        }    }    /// 
    /// 设置ison属性（不会自动调用方法）    /// 
    public bool IsOn    {        get        {            return this.m_IsOn;        }        set        {            this.Set(value, value, value);        }    }    protected MyToggle()    {    }    public virtual void Rebuild(CanvasUpdate executing)    {        if (executing != CanvasUpdate.Prelayout)            return;        this.onValueChanged.Invoke(this.m_IsOn);    }    public virtual void LayoutComplete()    {    }    public virtual void GraphicUpdateComplete()    {    }    protected override void OnEnable()    {        base.OnEnable();        this.PlayEffect(true);        this.IsOn = false;    }    protected override void OnDisable()    {        base.OnDisable();        this.IsOn = false;    }    private void Set(bool value)    {        this.Set(value, true);    }    private void Set(bool value, bool sendCallback)    {        if (this.m_IsOn == value)            return;        this.m_IsOn = value;        this.PlayEffect(this.toggleTransition == MyToggle.ToggleTransition.None);        if (!sendCallback)            return;        this.onValueChanged.Invoke(this.m_IsOn);    }    private void Set(bool value, bool sendCallback, bool call)    {        if (this.m_IsOn == value)            return;        this.m_IsOn = value;        this.PlayEffect(this.toggleTransition == MyToggle.ToggleTransition.None);        if (!sendCallback)            return;    }    private void InternalToggle()    {        if (!this.IsActive() || !this.IsInteractable())            return;        this.isOn = !this.isOn;    }    /// 
    /// 点击事件    /// 
    /// Current event.    public virtual void OnPointerClick(PointerEventData eventData)    {        if (eventData.button != PointerEventData.InputButton.Left)            return;        this.InternalToggle();    }    public virtual void OnSubmit(BaseEventData eventData)    {        this.InternalToggle();    }         public enum ToggleTransition    {        None,        Fade,    }    [Serializable]    public class ToggleEvent : UnityEvent
     
          {    }    protected override void OnDidApplyAnimationProperties()    {        if ((UnityEngine.Object)this.m_ChangeImage != (UnityEngine.Object)null)        {            bool flag = !Mathf.Approximately(this.m_ChangeImage.canvasRenderer.GetColor().a, 0.0f);            if (this.m_IsOn != flag)            {                this.m_IsOn = flag;                this.Set(!flag);            }        }        base.OnDidApplyAnimationProperties();    }    private void PlayEffect(bool instant)    {        if ((UnityEngine.Object)this.m_ChangeImage == (UnityEngine.Object)null)            return;        if (!Application.isPlaying)            this.m_ChangeImage.canvasRenderer.SetAlpha(!this.m_IsOn ? 0.0f : 1f);        else            this.m_ChangeImage.CrossFadeAlpha(!this.m_IsOn ? 0.0f : 1f, !instant ? 0.1f : 0.0f, true);    }    protected override void Start()    {        this.PlayEffect(true);    }    protected override void OnValidate()    {        base.OnValidate();        this.Set(this.m_IsOn, false);        this.PlayEffect(this.toggleTransition == MyToggle.ToggleTransition.None);        if (PrefabUtility.GetPrefabType((UnityEngine.Object)this) == PrefabType.Prefab || Application.isPlaying)            return;        CanvasUpdateRegistry.RegisterCanvasElementForLayoutRebuild((ICanvasElement)this);    } }