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void Start()
{ Button btn=this.transform.Find(“Button”).GetComponent<Button>();
btn.onClick.AddListener(方法名);//无参数、返回值的方法
//public delegate void UnityAction();}

·实现接口

拖拽类：
IBeginDragHandlerThe first frame of dragging is executed
IDragHandlerExecuted every frame of the drag
IEndDragHandler（先）End drag and drop execution
IDropHandler（后）
鼠标指针类
IPointerEnterHandler
IPointerExitHandlerThe cursor leaves the execution
IPointerDownHandler
IPointerUpHandler
IPointerClickHandler
点选类
IUpdateSelectedHanderClick to select Execute every frame
ISelectHanderSelect a frame to execute
IDeselectHanderThe frame that is not selected is executed
输入类    Based on point and click
IScrollHandler 选中UI,在UICalled when the mouse wheel is scrolled up
IMoveHandler                    移动
ISubmitHandler                  敲回车
ICancelHandler                  按Esc

public class NewBehaviourScript : MonoBehaviour,IDragHandler
{
    //当拖拽时执行
    public void OnDrag(PointerEventData eventData)
    {
        //eventData.position:光标位置（屏幕坐标）
        //仅仅适用于overlay模式
        //his.transform.position = eventData.position;
        //Canvas Render ModeAny mode is used——>
        //Convert screen coordinates to object world coordinates
        RectTransform parentRTF = this.transform.parent as RectTransform;
        Vector3 worldPos;
        //（Transform component of the parent object,屏幕坐标,摄像机,out 世界坐标）
        RectTransformUtility.ScreenPointToWorldPointInRectangle
            (parentRTF, eventData.position, eventData.pressEventCamera, out worldPos);
        this.transform.position = worldPos;
}
}

要求：Where is the point and where is the coordinate to move

using UnityEngine;

using UnityEngine.EventSystems;

public class NewBehaviourScript : MonoBehaviour,IPointerDownHandler,IDragHandler

{

     Vector3 offset;//记录从按下点到中心点偏移量（坐标）

     Vector3 worldPos;

    public void OnPointerDown(PointerEventData eventData)

    {

        RectTransform parentRTF = this.transform.parent as RectTransform;

        //（Transform component of the parent object,屏幕坐标,摄像机,out 世界坐标）

        RectTransformUtility.ScreenPointToWorldPointInRectangle

            (parentRTF, eventData.position, eventData.pressEventCamera, out worldPos);

        offset = this.transform.position - worldPos;

    }

    //当拖拽时执行

    public void OnDrag(PointerEventData eventData)

    {

        

        RectTransform parentRTF = this.transform.parent as RectTransform;

        Vector3 worldPos;

        //（Transform component of the parent object,屏幕坐标,摄像机,out 世界坐标）

        RectTransformUtility.ScreenPointToWorldPointInRectangle

            (parentRTF, eventData.position, eventData.pressEventCamera, out worldPos);

        this.transform.position = worldPos+offset;

    }

}

·自定义框架

iTween动画库

目的：以最小的投入实现最大的产出,Easily achieve various animation shakes、旋转、movement and fading

物体移动 MoveTo 颜色渐变ColorTo
物体淡入淡出FadeTo
摄像机淡入淡出CameraFadeAdd CameraFadeTo
注视旋转LookTo 物体旋转RotateTo
物体缩放 ScaleTo
晃动 PunchPosition PunchRotation PunchScale
震动 ShakePosition ShakeRotation ShakeScale

//缓动曲线
public Transform imgTF, btnTF;
    public iTween.EaseType type;
    private void Start()
    {
        //iTween.MoveTo(imgTF.gameObject, btnTF.position, 3);
        //（谁移,移到哪里,移动时间）
        iTween.MoveTo(imgTF.gameObject, iTween.Hash(
            "position",btnTF.position,
            "speed",50,
            "easetype",type
            ));
    }