有时候Unity发布在IOS上会出现:Could not produce class with ID XXX.This could be caused by a class being stripped from the build even though it is needed. Try disabling 'Strip Engine Code' inPlayer Settings.:<LoadWWWIEnumerator>c__Iterator99:MoveNext()的错误。

原因及解决办法

原因是勾选了Strip Engine Code,所以我们要做的就是在Player Setting – Other Setting,去掉勾选 Strip Engine

如果要Strip Engine

如果要Strip Engine,那就需要把不想被strip的添加进来。

1、新建link.xml放在Assets目录下,里面添加不想被strip的dll的名字

ID查询: https://docs.unity3d.com/Manual/ClassIDReference.html

下面是导入高通Vuforia之后,SDK中默认的link.xml的内容

<linker>
    <!-- The following assemblies contain namespaces that should be fully preserved
         even when assembly stripping is used. Not excluding the assemblies below from
         stripping can result in crashes or various exceptions. -->
    <assembly fullname="Vuforia.UnityExtensions">
        <namespace fullname="Vuforia" preserve="all"/>
    </assembly>
    <assembly fullname="System">
        <namespace fullname="System.Runtime.InteropServices" preserve="all"/>
        <namespace fullname="System.Collections.Generic;" preserve="all"/>
        <namespace fullname="System.Linq;" preserve="all"/>
        <namespace fullname="System.Text.RegularExpressions;" preserve="all"/>
        <namespace fullname="System.IO;" preserve="all"/>
        <namespace fullname="System;" preserve="all"/>
    </assembly>
</linker>

如果提示的ID的是Editor的,比如 AnimatorController(ID 91)属于Editor包里的,不能用link.xm加回来,可以在Resource下建一个空的prefab,在上面挂一个AnimatorController,打包时留下这个prefab就可以确保这个类不被strip掉了。
参考:https://forum.unity3d.com/threads/could-not-produce-class-with-id-91-ios.267548/

Unity的默认值

以Unity5.3.5为例ios平台,默认勾选了 Strip Engine Code,且Script Background为I2CPP

android平台,默认disabled Strip Engine Code,且Script Background为Mono2x

Last modification:January 18th, 2021 at 03:09 am
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