Ошибка CS0234 может возникнуть при работе с Unity. Эта ошибка связана с тем, что компилятор не может найти определенный тип или пространство имен. В этой статье мы рассмотрим, как исправить эту ошибку.
Причины возникновения ошибки CS0234
Ошибка CS0234 может возникнуть по следующим причинам:
- отсутствие ссылки на необходимую библиотеку или файл размещен в другом месте, чем Unity ожидают его найти;
- ошибки в импорте библиотек;
- внесение изменений в файлы проекта Unity вручную без использования Unity интерфейсов.
Шаги по исправлению ошибки CS0234
Следуйте этим шагам, чтобы исправить ошибку CS0234:
Шаг 1. Проверьте наличие ссылок на необходимые библиотеки
Проверьте, что ваши проектные настройки Unity содержат ссылки на необходимые библиотеки. Зайдите в меню «Project Settings -> Player». В секции «Other Settings» есть поле «Scripting Define Symbols». Проверьте, что здесь есть все необходимые символы.
Шаг 2. Проверьте правильность импорта библиотек
Убедитесь, что вы правильно импортировали все необходимые библиотеки в свой проект. Проверьте ваши скрипты и папки «Plugins» и «Standard Assets». Возможно, вы должны будете добавить ссылку на отсутствующую библиотеку.
Шаг 3. Проверьте расположение файлов
Проверьте, что файлы находятся в нужном месте. Проверьте пути и наличие файлов в нужных каталогах. Если файл был перемещен, переместите его обратно в изначальное место.
Шаг 4. Проверьте версию подключаемой библиотеки
Убедитесь, что вы используете правильную версию библиотеки. Если у вас есть несколько версий одной библиотеки, возможно, вы используете устаревшую версию.
Шаг 5. Проверьте правильность написания импорта
Убедитесь, что вы правильно написали импорт библиотеки. Проверьте, что вы используете правильное пространство имен.
Заключение
Ошибка CS0234 может возникнуть по разным причинам. Основные причины — отсутствие необходимых библиотек, неправильный импорт и ошибки в маршрутах. Следуйте описанным выше шагам, чтобы исправить ошибку CS0234 в вашем проекте Unity.
I have installed the latest versions of Unity (2017.3.1), Daydream SDKs (GVR SDK for Unity v1.130.0) and followed the steps here: https://developers.google.com/vr/develop/unity/get-started#configure_build_settings_and_player_settings
However when I press Play I get the following error, ideas on what is the reason & how to fix it?
Assets/GoogleVR/Editor/GvrBuildProcessor.cs(20,19): error CS0234: The type or namespace name ‘iOS’ does not exist in the namespace ‘UnityEditor’. Are you missing an assembly reference?
Edit: Issue fixed after a few hours of submission on GitHub with the release of GVR SDK for Unity v1.130.1
- unity-game-engine
- virtual-reality
- daydream
asked Mar 16, 2018 at 23:29
RehaReha
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5
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From the Build Settings, switch your platform from whatever it is currently set to to iOS or Android.
Mar 16, 2018 at 23:32
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I had done it as it was stated in the steps but had not worked. Though now I tried it with the previous Daydream SDK 1.120 and now having another issue: «Virtual Reality SDK Daydream is not supported in Editor Play Mode. Please Build and run on a supported target device. Attempting to enable None instead.» Is this expected ?
Mar 16, 2018 at 23:43
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File for bug report on for GoogleVR on their github page. Also mention your plugin and Unity version
Mar 16, 2018 at 23:44
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filed the issue with SDK 1.130 though considering SDK 1.120 had been around for a while I doubt that is also a bug. Any other thoughts?
Mar 17, 2018 at 0:24
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The problem is coming from their SDK so yes
Mar 17, 2018 at 0:29
7 Answers
If you’re facing with this problem there are 2 steps to solve it:
- Make sure that «iOS Build Support» is checked in Unity Hub -> Installs as Adam mentioned (if U’re developing for iOS platform then this option most definitely is already checked).
- Place your script in Assets -> Editor folder. UnityEditor.iOS.Xcode namespace cannot be used in your main project. It works only in special Assembly-CSharp-Editor project intended to modify native Xcode project. (That’s the option that worked for me after searching a ton of forums).
answered Apr 4, 2020 at 10:55
ShpandShpand
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If «iOS Build Support» is not enabled, then it can be added via «Add Module» option.
Jul 28, 2020 at 1:31
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#2 is a clutch find — thank you for documenting your hours long search so the rest of us don’t have to
Jul 15, 2022 at 16:23
Stephen Rauch♦
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answered Jul 1, 2018 at 0:36
I went ahead and changed the «Current Platform» to «iOS» in Unity Hub, This is a quick fix and it works now.
Change «Current Platform» to iOS Image:
Nimantha
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answered Sep 12, 2019 at 17:02
If you have installed IOS build through unity hub while the project is open, try restarting Unity Hub and Unity Editor. This solved my issue.
iminiki
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answered Jan 10, 2022 at 10:06
I met this issue When useing unity-arkit-plugin to develop something, i did nothing but import this plugin it throw this error .
And after i installed UnitySetup-IOS-Support-for-Editor-2017.3.0f3.pkg ,the issue fixed.
answered Apr 1, 2018 at 1:31
This usually happens when iOS Build Support is not installed in Unity Hub
answered Dec 16, 2022 at 16:23
Mihai GalanMihai Galan
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If IOS support is installed through Unity Hub after the editor is opened save the project, close and reopen.
answered Jul 18 at 22:05
I’m new to unity and c# language, I found this error, can anyone help me to solve this?
this is my script code.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputValue;
public class PlayerController : MonoBehaviour
{
public float moveSpeed = 1f;
public float collisionOffset = 0.05f;
public ContactFilter2D movementFilter;
Vector2 movementInput;
Rigidbody2D rb;
List<RaycastHit2D> castCollisions = new List<RaycastHit2D>();
// Start is called before the first frame update
void Start()
{
rb = GetComponent<Rigidbody2D>();
}
// Update is called once per frame
private void FixedUpdate()
{
if (movementInput != Vector2.zero)
{
int count = rb.Cast(
movementInput,
movementFilter,
castCollisions,
moveSpeed = Time.fixedDeltaTime + collisionOffset
);
}
}
void onMove(InputValue movementValue)
{
movementInput = movementValue.Get<Vector2>();
}
}
I’m new to C#, I haven’t set up the C# language, like the compiler, etc. Does this matter?, isn’t that all included in the unity installation?
Sometimes, when you add Flexbox4Unity to an existing project, Unity will generate this error in your console:
error CS0234: The type or namespace name ‘EventSystems’ does not exist in the namespace
This is caused by a small bug in Unity itself: they keep changing their internal UI classes in incompatible ways (in 2020 Unity is now onto the third complete rewrite for the Unity UI system, each time they give it a new name and make it incompatible with what they provided before).
Fortunately this is usually easy to fix – you just need to re-import Unity’s own UnityUI library (it’s unfortunate that they didn’t fix this themselves, and do the import automatically).
- In the Project view, open the Packages section
- Find the “Unity UI” folder
- Right click “Unity UI” folder and select “Re-import”
Re-importing should take 5-10 seconds, after which your compiler error should have disappeared.
So i’ve just installed Unity and i was following a tutorial from a youtuber to get started into 2D videogames, but as soon as i imported the stantard assests that error ocured. and i need a very step by step solution cause i have no idea what i am doing .
an image of what it looks like:
https://i.imgur.com/NeHLpR5.png
the tutorial i’m following if is needed:
And thanks and sorry, for a little bit more context: i have a code editor (Dev C++) ,I used to code in C and C++ for college; so i’m familiar with some of the things (don’t know if that matters but most of the tutorials i failed to follow used a code editor).