FileNotFoundException when using Xcode API

Questions & Answers
1

We are using the Xcode API to add frameworks, permissions, and update build settings. Currently we use the XcodeAPI code found here, copied into our project:
https://bitbucket.org/Unity-Technologies/xcodeapi

However, seeing as there is a version included in Unity, documented here:

However, I am getting odd build errors when trying to use types in UnityEditor.iOS.Xcode. Here is a minimal sample that reproduces the bugs:

using UnityEngine;
using System.Collections;
using System.IO;

#if UNITY_EDITOR

using UnityEditor;
using UnityEditor.Callbacks;
using UnityEditor.iOS.Xcode;

public class Editor : MonoBehaviour {
	// A variable from UnityEditor.iOS.Xcode declared in local scope is fine
	public static void LocalScopePlist()
	{
		PlistDocument plist = new PlistDocument();
	}

	// A variable from UnityEditor.iOS.Xcode passed in a function causes an FileNotFoundException
	public static void PassMeAPlist(PlistDocument passedPlist)
	{

	}
}

#endif

Errors I get in the Unity Editor are:

FileNotFoundException: Could not load file or assembly 'UnityEditor.iOS.Extensions.Xcode, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies.

FileNotFoundException: Could not load file or assembly 'UnityEditor.iOS.Extensions.Xcode, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies.

System.Reflection.MonoMethodInfo.GetMethodInfo (IntPtr handle) (at /Users/builduser/buildslave/mono-runtime-and-classlibs/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:59)
System.Reflection.MonoMethod.GetPseudoCustomAttributes () (at /Users/builduser/buildslave/mono-runtime-and-classlibs/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:293)
System.MonoCustomAttrs.GetPseudoCustomAttributes (ICustomAttributeProvider obj, System.Type attributeType) (at /Users/builduser/buildslave/mono-runtime-and-classlibs/build/mcs/class/corlib/System/MonoCustomAttrs.cs:78)
System.MonoCustomAttrs.IsDefined (ICustomAttributeProvider obj, System.Type attributeType, Boolean inherit) (at /Users/builduser/buildslave/mono-runtime-and-classlibs/build/mcs/class/corlib/System/MonoCustomAttrs.cs:301)
System.Reflection.MonoMethod.IsDefined (System.Type attributeType, Boolean inherit) (at /Users/builduser/buildslave/mono-runtime-and-classlibs/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:274)
System.Attribute.IsDefined (System.Reflection.MemberInfo element, System.Type attributeType, Boolean inherit) (at /Users/builduser/buildslave/mono-runtime-and-classlibs/build/mcs/class/corlib/System/Attribute.cs:326)
System.Attribute.IsDefined (System.Reflection.MemberInfo element, System.Type attributeType) (at /Users/builduser/buildslave/mono-runtime-and-classlibs/build/mcs/class/corlib/System/Attribute.cs:299)
UnityEditor.EditorAssemblies.ProcessStaticMethodAttributes (System.Type type) (at /Users/builduser/buildslave/unity/build/Editor/Mono/EditorAssemblies.cs:95)
UnityEditor.EditorAssemblies.ProcessInitializeOnLoadAttributes () (at /Users/builduser/buildslave/unity/build/Editor/Mono/EditorAssemblies.cs:130)
UnityEditor.EditorAssemblies.SetLoadedEditorAssemblies (System.Reflection.Assembly assemblies) (at /Users/builduser/buildslave/unity/build/Editor/Mono/EditorAssemblies.cs:63)

I have confirmed the dll is present at

/Applications/Unity/Unity.app/Contents/PlaybackEngines/iossupport/UnityEditor.iOS.Extensions.Xcode.dll`

Suggestions?

2

We just ran in this problem today too. It works for us if we use all UnityEditor.iOS.Xcode related stuff in just one method. The error messages pop up when I move some code in other methods (e.g. a seperate method for setting the build properties).

It works, but I don’t know why. Can someone confirm that?

3

A way to fix just change playeSetting APi CompatibilityLevel to Net2.0 ,then fine.