Transform.GetChild

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

public [Transform](https://docs.unity3d.com/cn/2019.4/ScriptReference/Transform.html) **GetChild** (int **index**);

## 参数

| index | 要返回的子变换的索引。必须小于 Transform.childCount。 |
| ------- | ------------------------------------------------------- |

## 返回

**Transform** 索引位置处的变换子项。

## 描述

按索引返回变换子项。

如果该变换没有子项，或者 index 参数的值大于子项数，则会生成错误。在这种情况下，将给出“Transform child out of bounds”错误。子项数可以由 [childCount](https://docs.unity3d.com/cn/2019.4/ScriptReference/Transform-childCount.html) 提供。

```
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    public Transform meeple;
    public GameObject grandChild;

public void Example()
    {
        //Assigns the transform of the first child of the Game Object this script is attached to.
        meeple = this.gameObject.transform.GetChild(0);

//Assigns the first child of the first child of the Game Object this script is attached to.
        grandChild = this.gameObject.transform.GetChild(0).GetChild(0).gameObject;
    }
}
```