System.Array.IndexOf returns -1

Question

我把截图告诉你一切。

    private Transform[] hiddenObjects;
void Start()
{
    leftImageRandom = new Randomizer(0, LeftImageSequence.transform.childCount - 1, true);
    DoStart();
}
private void DoStart()
{
    leftImageIndex = leftImageRandom.getRandom();
    LeftImageSequence.setCurrentChildIndex(leftImageIndex);
    RightImageSequence.setCurrentChildIndex(leftImageIndex);

    //take hidden objects and put them in an array
    hiddenObjects = RightImageSequence.CurrentChild.transform.GetChild(0).transform.GetComponentsInChildren<Transform>();
    for(int i=1;i<hiddenObjects.Length;i++)
        hiddenObjects[i].gameObject.GetOrAddComponent<MouseEventSystem>().MouseEvent += ClickedHiddenObject;
    Debug.Log(hiddenObjects.Length);
}

private void ClickedHiddenObject(GameObject target, MouseEventType type)
{
    if (type == MouseEventType.CLICK && CanClick)
    {
        int targetIndex = System.Array.IndexOf(hiddenObjects, target.gameObject);
        Debug.Log(targetIndex);
        hiddenObjects[targetIndex].GetComponent<SpriteRenderer>().DOFade(1f, 0.3f).SetEase(Ease.Linear);
    }
}

我有一个 targetIndex 需要 return 我点击的对象的索引。每个对象都包含 PoligonCollider2D 组件。问题是它总是 returns -1 到任何对象。有什么问题，我做错了什么？

Answer 1

来自您的代码：

private Transform[] hiddenObjects;
...
System.Array.IndexOf(hiddenObjects, target.gameObject)

hiddenObjects是一个Transform的数组，但是target.gameObject是一个GameObject（实际上target已经是一个GameObject，所以这是多余的） : 类型不匹配，所以 GameObject 永远不会等于 Transform.

改为尝试：

System.Array.IndexOf(hiddenObjects, target.transform)

System.Array.IndexOf returns -1

System.Array.IndexOf returns -1

c#

unity3d

system.array