U3D自定义滑动面板ViewPager_unity viewpager-优快云博客

本文链接：https://blog.youkuaiyun.com/PirateCode/article/details/51772685

本文介绍了一个Unity中实现的简单滑动翻页组件，通过继承MonoBehaviour并实现IDragHandler等接口，实现了手指触控拖动时页面的平滑切换效果。组件使用了Vector3和Transform等基本类型，并通过简单的数学计算来确定页面切换的方向。

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public class ViewPager : MonoBehaviour ,IDragHandler,IEndDragHandler,IPointerDownHandler{

    [SerializeField]
    private float dragSpeed = 10;
    [SerializeField]
    private float offetSpeed = 1;
    private Transform[] childTFArray;
    private Vector3 beginPosition;

    void Start () {
        childTFArray = new Transform[this.transform.childCount];
        for(int i = 0;i < this.transform.childCount;i++)
            childTFArray [i] = this.transform.GetChild (i);
    }

    public void OnPointerDown (PointerEventData eventData)
    {
        beginPosition = this.transform.position;
    }

    void Update () {

    }

    public void OnDrag (PointerEventData eventData)
    {
        this.transform.Translate (eventData.delta.x * dragSpeed * Time.deltaTime,0,0);
    }

    private int index = 0;

    public void OnEndDrag (PointerEventData eventData)
    {

        Vector3 move = this.transform.position - beginPosition;//获取滑动距离
        if (Mathf.Abs (eventData.delta.x) > offetSpeed || move.magnitude > Screen.width / 2) {
            if (move.x < 0)
                index++;
            else
                index--;
            index = Mathf.Clamp (index, 0, childTFArray.Length-1);限制页面索引
        }
        Vector3 target =  this.transform.position + this.transform.parent.position - childTFArray[index].position;
        this.transform.position = target;
    }

}