public GenericDictionary<Button, GameObject> buttonPrefabMap; private GameObject currentPrefab; private bool isPrefabLoaded = false; public Outline[] outlines; // 所有按钮的外轮廓组件 public GameObject CHild;//子物体 public void LoadPrefab(Button button) { if (isPrefabLoaded) //panels[i].activeSelf == false { Destroy(currentPrefab); isPrefabLoaded = false; SetOutline(false); //button.GetComponent<Outline>().enabled = false; // 取消外轮廓 return; } // 获取按钮对应的预制体 GameObject prefab = buttonPrefabMap[button];//GameObject // 销毁当前加载的预制体 Destroy(currentPrefab); // 加载新的预制体 currentPrefab = Instantiate(prefab,CHild.transform); isPrefabLoaded = true; SetOutline(true, button); // 添加当前按钮的外轮廓 //button.GetComponent<Outline>().enabled = true; // 添加外轮廓 } private void SetOutline(bool value, Button button = null) { foreach (Outline outline in outlines) { outline.enabled = false; } if (value && button != null) { button.GetComponent<Outline>().enabled = true; // 自动取消其他按钮的轮廓 foreach (Button otherButton in buttonPrefabMap.Keys) { if (otherButton != button && otherButton.GetComponent<Outline>().enabled) { otherButton.GetComponent<Outline>().enabled = false; } } } } unity 修改代码 点击按钮1加载模型 轮廓显示 点击按钮2加载新模型 自动取消按钮1的轮廓 按钮2的轮廓显示 不用bool的方式

可以使用一个记录当前选中按钮的变量，来判断是否需要取消前一个按钮的轮廓并添加当前按钮的轮廓。修改后的代码如下：

public GenericDictionary<Button, GameObject> buttonPrefabMap;
private GameObject currentPrefab;
private Button currentButton; //记录当前选中的按钮
public Outline[] outlines;
public GameObject CHild;

public void LoadPrefab(Button button)
{
    if (currentButton == button)
    {
        Destroy(currentPrefab);
        currentButton = null;
        SetOutline(false);
        return;
    }

    GameObject prefab = buttonPrefabMap[button];

    Destroy(currentPrefab);

    currentPrefab = Instantiate(prefab, CHild.transform);
    currentButton = button;

    SetOutline(true);
}

private void SetOutline(bool value)
{
    foreach (Outline outline in outlines)
    {
        outline.enabled = false;
    }

    if (value && currentButton != null)
    {
        currentButton.GetComponent<Outline>().enabled = true;

        foreach (Button otherButton in buttonPrefabMap.Keys)
        {
            if (otherButton != currentButton && otherButton.GetComponent<Outline>().enabled)
            {
                otherButton.GetComponent<Outline>().enabled = false;
            }
        }
    }
}

这样，当点击同一个按钮时，会取消该按钮的轮廓并销毁已加载的预制体；当点击不同的按钮时，会取消前一个按钮的轮廓并加载新的预制体和添加当前按钮的轮廓。