给UI元素自定义事件

原创于 2018-04-28 09:36:18 发布 · 253 阅读

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#UI事件

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本文介绍如何在Unity中为UI按钮添加鼠标悬停时的缩放动画效果。通过使用EventTrigger组件监听鼠标事件，并利用DOTween库实现平滑的缩放动画。支持两种动画类型：放大和缩小。

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 public void AddButtonDownAndScaleLisenter(AniType aniType)
    {

//获取EventTrigger 

        EventTrigger trigger = gameObject.GetComponent<EventTrigger>();

        if (trigger == null)
            trigger = gameObject.AddComponent<EventTrigger>();

        EventTrigger.Entry entry = new EventTrigger.Entry();

//添加鼠标事件

        entry.eventID = EventTriggerType.PointerDown;

        //添加回调

        entry.callback = new EventTrigger.TriggerEvent();

        entry.callback.AddListener(delegate(BaseEventData baseEventData) {
            //action(baseEventData);
            Sequence seq = DOTween.Sequence();
            if (aniType == AniType.ToBig)
            {
                seq.Append(gameObject.GetComponent<RectTransform>().DOScale(new Vector3(1.05f, 1.05f, 0), 0.2f));
            }
            else {
                seq.Append(gameObject.GetComponent<RectTransform>().DOScale(new Vector3(0.95f, 0.95f, 0), 0.2f));
            }
        });


        trigger.triggers.Add(entry);

    }