UNITY 错误 CS0246：找不到类型或命名空间名称“MenuItem”。 您是否缺少程序集参考？

Question

For some reason i keep getting a referencing error for:

(8,6): error CS0246: The type or namespace name `MenuItem' could not be found. Are you missing an assembly reference?

(24,26): error CS0246: The type or namespace name `SerializedObject' could not be found. Are you missing an assembly reference?

Code:

using UnityEngine;
using UnityEditor;
using System.Collections;


public class AudioSourceReplacement { 

    [MenuItem("FMOD Tools/Replace Audio Emitters")]
    private static void ReplaceEmitters()
    {
        AudioSource[] audioSources = Object.FindObjectsOfType<AudioSource>();

        foreach (AudioSource audioSource in audioSources)
        {
            if (audioSource.clip == null)
            {
                continue;
            }
            string eventName = audioSource.clip.name;
            string eventPath = (audioSource.spatialBlend < 0.5f ? "event:/Ambience/2D/" : "event:/Ambience/3D/") + eventName;

            FMODUnity.StudioEventEmitter emitter = audioSource.gameObject.AddComponent<FMODUnity.StudioEventEmitter>();
            emitter.Event = eventPath;
            var so = new SerializedObject(emitter);
            so.ApplyModifiedProperties();
        }

        for (int i=0;i<audioSources.Length;i++)
        {
            GameObject.DestroyImmediate(audioSources[i]);
        }
    }

    [MenuItem("FMOD Tools/Force All Emitters Play On Start")]
    private static void EmittersPlayOnStart()
    {
        FMODUnity.StudioEventEmitter[] audioSources = Object.FindObjectsOfType<FMODUnity.StudioEventEmitter>();

        foreach (FMODUnity.StudioEventEmitter audioSource in audioSources)
        {
            audioSource.PlayEvent = FMODUnity.EmitterGameEvent.ObjectStart;
        }
    }
}

Answer 1

This might happen because you didn't put this script inside an 'Editor' folder. It's one of these Special Folders .

Answer 2

You have to put your script inside your "Editor" folder. "Assets/Editor/AudioSourceReplacement.cs" should do the trick.