GameObject.Find

# [GameObject](https://docs.unity3d.com/cn/2019.4/ScriptReference/GameObject.html).Find

public static [GameObject](https://docs.unity3d.com/cn/2019.4/ScriptReference/GameObject.html) **Find** (string **name**);

## 描述

按 `name` 查找 GameObject，然后返回它。

此函数仅返回活动 GameObject。如果未找到具有 `name` 的 GameObject，则返回 null。如果 `name` 包含“/”字符，则会向路径名称那样遍历此层级视图。

出于性能原因，建议不要每帧都使用此函数，而是在启动时将结果缓存到成员变量中，或者使用 [GameObject.FindWithTag](https://docs.unity3d.com/cn/2019.4/ScriptReference/GameObject.FindWithTag.html)。

**注意：** 如果您要查找子 GameObject，使用 [Transform.Find](https://docs.unity3d.com/cn/2019.4/ScriptReference/Transform.Find.html) 通常会更加轻松。

**注意：** 如果正在使用多个场景运行此游戏，则 [Find](https://docs.unity3d.com/cn/2019.4/ScriptReference/GameObject.Find.html) 将在所有这些场景中进行搜索。

```
using UnityEngine;
using System.Collections;

// This returns the GameObject named Hand in one of the Scenes.

public class ExampleClass : MonoBehaviour
{
    public GameObject hand;

void Example()
    {
        // This returns the GameObject named Hand.
        hand = GameObject.Find("Hand");

// This returns the GameObject named Hand.
        // Hand must not have a parent in the Hierarchy view.
        hand = GameObject.Find("/Hand");

// This returns the GameObject named Hand,
        // which is a child of Arm > Monster.
        // Monster must not have a parent in the Hierarchy view.
        hand = GameObject.Find("/Monster/Arm/Hand");

// This returns the GameObject named Hand,
        // which is a child of Arm > Monster.
        hand = GameObject.Find("Monster/Arm/Hand");
    }
}
```

[GameObject.Find](https://docs.unity3d.com/cn/2019.4/ScriptReference/GameObject.Find.html) 有助于在加载时自动连接对其他对象的引用；例如在 [MonoBehaviour.Awake](https://docs.unity3d.com/cn/2019.4/ScriptReference/MonoBehaviour.Awake.html) 或 [MonoBehaviour.Start](https://docs.unity3d.com/cn/2019.4/ScriptReference/MonoBehaviour.Start.html) 内。

出于性能原因，建议不要每帧都使用此函数。

常见模式是将 GameObject 分配到 [MonoBehaviour.Start](https://docs.unity3d.com/cn/2019.4/ScriptReference/MonoBehaviour.Start.html) 内的变量，然后在 [MonoBehaviour.Update](https://docs.unity3d.com/cn/2019.4/ScriptReference/MonoBehaviour.Update.html) 中使用此变量。

```
using UnityEngine;
using System.Collections;

// Find the GameObject named Hand and rotate it every frame

public class ExampleClass : MonoBehaviour
{
    private GameObject hand;

void Start()
    {
        hand = GameObject.Find("/Monster/Arm/Hand");
    }

void Update()
    {
        hand.transform.Rotate(0, 100 * Time.deltaTime, 0);
    }
}
```