UNity隐藏GameObject下的所有子项SetActive

可以使用以下代码来隐藏一个 GameObject 下的所有子对象：

public static void SetChildrenActive(GameObject parent, bool active)
{
    foreach (Transform child in parent.transform)
    {
        child.gameObject.SetActive(active);
    }
}

这个函数接受一个 `GameObject` 和一个布尔值参数 `active`，如果 `active` 为 `true`，则将所有子对象设置为激活状态，否则将它们设置为非激活状态。

在函数内部，我们使用 `foreach` 循环遍历 `parent` 的所有子对象，然后调用 `SetActive()` 方法来设置它们的激活状态。

相关问题

unity中GameObject.SetActive的作用

在Unity中，SetActive是一个GameObject的方法，它的作用是启用或禁用GameObject及其所有的子对象。当一个GameObject被禁用时，它的所有组件也会被禁用，这样可以节省内存和处理器资源。

SetActive方法可以用来控制游戏对象的显示和隐藏，它可以被用于控制一个GameObject的生命周期，比如在不需要使用某个游戏对象时，可以通过SetActive(false)来让它暂时禁用，这样有效地减少了游戏的性能消耗。

SetActive方法也可以用于动态加载和卸载游戏对象，比如在某些场景或关卡中需要显示不同的游戏对象，就可以通过SetActive方法来动态地加载和卸载这些游戏对象。

unity gameobject setactive

Unity's SetActive function is a method that can be used to enable or disable a GameObject in your game. The GameObject is the basic object in Unity that represents any object in a scene. When a GameObject is disabled, it means that it is not rendered, updated or processed by the game engine.

Here's an example of how to use the SetActive function:

public GameObject myGameObject;

void Start()
{
    // Disable the GameObject
    myGameObject.SetActive(false);
}

void Update()
{
    // Enable the GameObject when the player presses the spacebar
    if (Input.GetKeyDown(KeyCode.Space))
    {
        myGameObject.SetActive(true);
    }
}

In this example, we first declare a reference to our GameObject using the public keyword. This makes the GameObject accessible from the Unity editor, allowing us to drag and drop the object into the script's public field.

In the Start function, we use the SetActive method to disable the GameObject by passing in the value false.

In the Update function, we check if the player has pressed the spacebar using the Input.GetKeyDown method. If the spacebar is pressed, we use the SetActive method to enable the GameObject by passing in the value true.

By using the SetActive method, we can easily enable or disable GameObjects in our game as needed.