Resources.Load

描述

Loads the asset of the requested type stored at path in a Resources folder.

This method returns the asset at path if it can be found, otherwise it returns null.
Note that the path is case insensitive and must not contain a file extension. All asset names and paths in Unity use forward slashes, so using backslashes in the path will not work.

The path is relative to any folder named Resources inside the Assets folder of your project. More than one Resources folder can be used. If you have multiple Resources folders you cannot duplicate the use of an asset name.

For example, a project may have Resources folders called Assets / Resources/ and Assets / Guns / Resources/. The path does not need to include Assets and Resources in the string, for example loading a GameObject at Assets / Guns / Resources / Shotgun.prefab would only require Shotgun as the path. Also, if Assets / Resources / Guns / Missiles / PlasmaGun.prefab exists it can be loaded using Guns / Missiles / PlasmaGun as the path string.
If you have multiple Resources folders you cannot duplicate the use of an asset name.

If you have multiple assets of different types with the same name, and you don't specify the type, then the object that Unity returns is non-deterministic because the potential candidates are not ordered in any particular way. Instead, use Resources.Load<T>(path) to specify the required asset.

参数

返回

T An object of the requested generic parameter type.

描述

Loads the asset of the requested type stored at path in a Resources folder using a generic parameter type filter of type T.

This method returns the asset at path if it can be found and if its type matches the requested generic parameter type, otherwise it returns null. You can use this overload to reduce type conversion in your code by providing a generic type parameter. This allows Unity to perform the C# type conversion for you.

// Loading assets from the Resources folder using the generic Resources.Load<T>(path) method
using UnityEngine;

public class ExampleClass : MonoBehaviour
{
    void Start()
    {
        //Load a text file (Assets/Resources/Text/textFile01.txt)
        var textFile = Resources.Load<TextAsset>("Text/textFile01");

        //Load text from a JSON file (Assets/Resources/Text/jsonFile01.json)
        var jsonTextFile = Resources.Load<TextAsset>("Text/jsonFile01");
        //Then use JsonUtility.FromJson<T>() to deserialize jsonTextFile into an object

        //Load a Texture (Assets/Resources/Textures/texture01.png)
        var texture = Resources.Load<Texture2D>("Textures/texture01");

        //Load a Sprite (Assets/Resources/Sprites/sprite01.png)
        var sprite = Resources.Load<Sprite>("Sprites/sprite01");

        //Load an AudioClip (Assets/Resources/Audio/audioClip01.mp3)
        var audioClip = Resources.Load<AudioClip>("Audio/audioClip01");
    }
}

参数

返回

Object 作为对象返回的请求资源。

描述

Loads an asset stored at path in a Resources folder using an optional systemTypeInstance filter.

This method returns the asset at path if it can be found and if its type matches the optional systemTypeInstance parameter, otherwise it returns null.
You may need to cast the returned object to the actual associated C# type of the asset in order to access its methods and properties, or use it with other Unity APIs.

// Loading assets from the Resources folder using the Resources.Load(path)
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    // Assigns a texture named "Assets/Resources/glass" to a Plane.
    void Start()
    {
        GameObject go = GameObject.CreatePrimitive(PrimitiveType.Plane);
        var rend = go.GetComponent<Renderer>();
        rend.material.mainTexture = Resources.Load("glass") as Texture;
    }
}

// Loading assets from the Resources folder using the Resources.Load(path, systemTypeInstance)
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    // Instantiates a Prefab named "enemy" located in any Resources folder in your project's Assets folder.
    void Start()
    {
        GameObject instance = Instantiate(Resources.Load("enemy", typeof(GameObject))) as GameObject;
    }
}