You need to add a reference to Mono.Android.Export.Dll when you use ExportAttribute or ExportFieldAttribute

Question

My code works fine, but when I added fragments with a new namespace to the project, I began getting the error

You need to add a reference to Mono.Android.Export.Dll when you use ExportAttribute or ExportFieldAttribute

I've searched online and found several mentions of unlinking assemblies, but I've also read that this will cause additional errors.

Does anyone know how to solve this bug?

score 133 · Accepted Answer · edited Mar 29 '20 at 08:58

133

I found the answer. Right click references and search Export. Just add the Mono.Android.Export to your project.

edited Mar 29 '20 at 08:58

Ehsan Sajjad

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answered Jun 27 '15 at 05:52

Rupert

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This doesn't exactly answer why it is needed and what it does though. – Matti Virkkunen Jul 06 '16 at 03:38
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Just for clarification, it is called the "Mono.Android.Export" DLL. – 93Ramadan Jul 21 '19 at 11:09
For more clarification, after you right-click References, click Add Reference. The search bar is in the upper right of the form. See @Arun's answer for a screenshot. – Albert May 02 '23 at 18:45

score 51 · Answer 2 · answered Mar 30 '17 at 05:01

51

I added reference like @Jeremy Said, it's working

answered Mar 30 '17 at 05:01

Arun Prasad E S

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in my Visual Studio 2017, I am targeting MonoAndroid 5.0, and I see only one Mono.Android.Export.dll, that is from 7.1. Can I find older versions of Mono.Android.Export.dll anywhere to download? – Lupu Silviu May 16 '17 at 10:02
@LupuSilviu Usually all dlls are individually avaliable to download. Please try searching for it. – Arun Prasad E S May 16 '17 at 14:07

score 15 · Answer 3 · answered Jun 02 '21 at 20:18

If you're using JetBrains Rider, you can solve the issue by adding the Mono.Android.Export reference to your Android .csproj file:

<!-- ExampleApp.Android.csproj -->
<?xml version="1.0" encoding="utf-8"?>
<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
    ...
    <ItemGroup>
        <Reference Include="Mono.Android" />
        <Reference Include="Mono.Android.Export" />
    </ItemGroup>
    ...
</Project>

score 3 · Answer 4 · answered Jun 27 '18 at 18:09

You don't need download dll from the web if you cant find it in the reference manager

just do following steps:

Set the target framework to Android 4.4 kit kat
Add reference mono.android.expert.dll
set targetFramework as last good target framework

Clean solution and rebuild

I hope it helps you.

score 0 · Answer 5 · answered May 17 '23 at 14:33

If you're using VS 2022 (like @Siddhant maurya):

Right click the "References" folder of the project that gets the error.
Choose "Add project reference".
In the "All" tab select "Mono.Android.Export".
Press "Select".
(optional) Close VS 2022 and open explorer(Windows) or finder(MacOS) to remove for every project in the solution the "bin" and "obj" folders.
(optional reopen VS 2022) Rebuild the solution.

You need to add a reference to Mono.Android.Export.Dll when you use ExportAttribute or ExportFieldAttribute

5 Answers5

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