unity2d实现图片滑动切换的具体操作和完整代码

实现图片滑动切换的具体操作和完整代码如下：

1. 创建一个空对象，命名为"ImageSlider"，并添加UI/Image组件；

2. 在"ImageSlider"对象下创建子对象，命名为"Viewport"，并添加UI/Image组件和Mask组件，将Mask的Mode设置为"Rect"；

3. 在"Viewport"对象下创建子对象，命名为"Content"，并添加UI/Image组件，设置好图片的大小和位置；

4. 在"Content"对象上添加一个脚本，命名为"ImageSliderController"，并将以下代码添加到脚本中：

using UnityEngine;
using UnityEngine.UI;

public class ImageSliderController : MonoBehaviour
{
    public Sprite[] images; // 图片数组
    public float transitionSpeed = 1f; // 切换速度
    private int currentIndex = 0; // 当前图片索引
    private Image contentImage; // Content对象上的Image组件

    void Start()
    {
        contentImage = transform.GetChild(0).GetComponent<Image>();
        contentImage.sprite = images[currentIndex];
    }

    void Update()
    {
        if (Input.GetKeyDown(KeyCode.RightArrow)) // 按右箭头切换到下一张图片
        {
            currentIndex++;
            if (currentIndex >= images.Length) currentIndex = 0;
            StartCoroutine(TransitionToNextImage());
        }

        if (Input.GetKeyDown(KeyCode.LeftArrow)) // 按左箭头切换到上一张图片
        {
            currentIndex--;
            if (currentIndex < 0) currentIndex = images.Length - 1;
            StartCoroutine(TransitionToPreviousImage());
        }
    }

    IEnumerator TransitionToNextImage()
    {
        float t = 0f;
        Vector3 startPosition = contentImage.rectTransform.localPosition;
        Vector3 endPosition = new Vector3(-contentImage.rectTransform.rect.width, 0f, 0f);

        while (t < 1f)
        {
            t += Time.deltaTime * transitionSpeed;
            contentImage.rectTransform.localPosition = Vector3.Lerp(startPosition, endPosition, t);
            yield return null;
        }

        contentImage.rectTransform.localPosition = endPosition;
        contentImage.sprite = images[currentIndex];
        contentImage.rectTransform.localPosition = new Vector3(contentImage.rectTransform.rect.width, 0f, 0f);

        t = 0f;
        startPosition = contentImage.rectTransform.localPosition;
        endPosition = Vector3.zero;

        while (t < 1f)
        {
            t += Time.deltaTime * transitionSpeed;
            contentImage.rectTransform.localPosition = Vector3.Lerp(startPosition, endPosition, t);
            yield return null;
        }

        contentImage.rectTransform.localPosition = endPosition;
    }

    IEnumerator TransitionToPreviousImage()
    {
        float t = 0f;
        Vector3 startPosition = contentImage.rectTransform.localPosition;
        Vector3 endPosition = new Vector3(contentImage.rectTransform.rect.width, 0f, 0f);

        while (t < 1f)
        {
            t += Time.deltaTime * transitionSpeed;
            contentImage.rectTransform.localPosition = Vector3.Lerp(startPosition, endPosition, t);
            yield return null;
        }

        contentImage.rectTransform.localPosition = endPosition;
        contentImage.sprite = images[currentIndex];
        contentImage.rectTransform.localPosition = new Vector3(-contentImage.rectTransform.rect.width, 0f, 0f);

        t = 0f;
        startPosition = contentImage.rectTransform.localPosition;
        endPosition = Vector3.zero;

        while (t < 1f)
        {
            t += Time.deltaTime * transitionSpeed;
            contentImage.rectTransform.localPosition = Vector3.Lerp(startPosition, endPosition, t);
            yield return null;
        }

        contentImage.rectTransform.localPosition = endPosition;
    }
}

5. 将需要切换的图片拖入"ImageSliderController"脚本的"images"数组中；

6. 运行游戏，按左右箭头即可切换图片。

完整代码戳这里：https://github.com/Unity3dAzure/Unity2D-ImageSlider/blob/master/Assets/Scripts/ImageSliderController.cs