Unity3D: error CS0246: The type or namespace name `UnityEditor' could not be found.

Trabla: Unity3D: error CS0246: The type or namespace name `UnityEditor' could not be found.

Trabla Description:

1. Simple project

2. Script "MyBuildScript.cs" to add custom menu to Unity3d Editor
- compile project for Androdi or iOS

Located in Assets folder

3. Source code of  "MyBuildScript.cs" script:

using UnityEngine;

using System.Collections;

using System.Collections.Generic;

using UnityEditor;

class MyBuildScript

{

static string[] SCENES = FindEnabledEditorScenes();

static string APP_NAME = "Demo";

static string TARGET_DIR = "C:\\Users\\Public\\Documents\\Unity Projects\\demo-buildScript";

[MenuItem("Custom/CI/Build Mac OS X")]  // Creates menu item in unity editor

public static void PerformMacOSXBuild()

{

string target_dir = APP_NAME + ".app";

GenericBuild(SCENES, TARGET_DIR + "/" + target_dir, BuildTarget.StandaloneOSXIntel, BuildOptions.None);

}

[MenuItem("Custom/CI/Build Android")]   // Creates menu item in unity editor

public static void PerformAndroidBuild()

{

string target_dir = APP_NAME + ".apk";

GenericBuild(SCENES, TARGET_DIR + "/" + target_dir, BuildTarget.Android, BuildOptions.None);

}

private static string[] FindEnabledEditorScenes()

{

List<string> EditorScenes = new List<string>();

foreach (EditorBuildSettingsScene scene in EditorBuildSettings.scenes)

{

if (!scene.enabled) continue;

EditorScenes.Add(scene.path);

}

return EditorScenes.ToArray();

}

static void GenericBuild(string[] scenes, string target_dir, BuildTarget build_target, BuildOptions build_options)

{

EditorUserBuildSettings.SwitchActiveBuildTarget(build_target);

string res = BuildPipeline.BuildPlayer(scenes, target_dir, build_target, build_options);

if (res.Length > 0)

{

throw new System.Exception("BuildPlayer failure: " + res);

}

}

}

4. Try to run build script from Editor  - menu "Custom" -> "CI" -> "Build Android"


5. Exception:

Assets/MyBuildScript.cs(4,7): error CS0246: The type or namespace name `UnityEditor' could not be found. Are you missing a using directive or an assembly reference?

Solving:

1. Create folder "Editor" in "Assets" folder

2. Move script "MyBuildScript.cs" to "Assets" -> "Editor" folder

All scripts with using UnityEditor; should be placed in "Assets" -> "Editor" folder