Version: 2022.1
语言: 中文

GameObject.GetComponent

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public Component GetComponent (Type type);

参数

type 要检索的组件的类型。

描述

Returns the component of Type type if the GameObject has one attached, null if it doesn't.

使用 gameObject.GetComponent 将返回找到的第一个组件，并且未定义顺序。如果预期存在多个相同类型的组件，请改用 gameObject.GetComponents，并针对某些唯一的属性循环使用返回的组件测试。 

using UnityEngine;

public class GetComponentExample : MonoBehaviour
{
    void Start()
    {
        HingeJoint hinge = gameObject.GetComponent(typeof(HingeJoint)) as HingeJoint;

        if (hinge != null)
            hinge.useSpring = false;
    }
}
public T GetComponent ();

描述

Generic version of this method.

using UnityEngine;

public class GetComponentGenericExample : MonoBehaviour
{
    void Start()
    {
        HingeJoint hinge = gameObject.GetComponent<HingeJoint>();

        if (hinge != null)
            hinge.useSpring = false;
    }
}
public Component GetComponent (string type);

参数

type 要检索的组件的类型。

描述

Returns the component with name type if the GameObject has one attached, null if it doesn't.

To improve the performance of your code, use GetComponent with a type instead of a string. 

using UnityEngine;

public class GetComponentNonPerformantExample : MonoBehaviour
{
    void Start()
    {
        HingeJoint hinge = gameObject.GetComponent("HingeJoint") as HingeJoint;

        if (hinge != null)
            hinge.useSpring = false;
    }
}

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