Object.FindFirstObjectByType

参数

返回

T Returns the first active loaded object that matches the specified type. If no object matches the specified type, returns null.

描述

Retrieves the first active loaded object of Type type.

Object.FindFirstObjectOfType doesn't return Assets (for example meshes, textures, or prefabs), or inactive objects. It also doesn't return objects that have HideFlags.DontSave set.

Note: This function is very resource intensive. It's best practice to not use this function every frame and instead, in most cases, use the singleton pattern. Alternatively if you only need any instance of a matching object rather than the first one you can use the faster Object.FindAnyObjectOfType

See Also: Object.FindAnyObjectByType, Object.FindObjectsByType.

using UnityEngine;
using System.Collections;

// Search for the first object of Types TextMesh and CanvasRenderer,
// if found print the names, else print a message
// that says that it was not found.
public class ExampleClass : MonoBehaviour
{
    void Start()
    {
        TextMesh texture = (TextMesh)FindFirstObjectByType(typeof(TextMesh));
        if (texture)
            Debug.Log("TextMesh object found: " + texture.name);
        else
            Debug.Log("No TextMesh object could be found");

        CanvasRenderer canvas = FindFirstObjectByType<CanvasRenderer>();
        if (canvas)
            Debug.Log("CanvasRenderer object found: " + canvas.name);
        else
            Debug.Log("No CanvasRenderer object could be found");
    }
}