Class not found error while binding aar library

Question

I am trying to bind aar library called "autoreplyprint.aar", following is the aar file link

I have added following itemgroups for the .aar and its .so files

<ItemGroup Condition="$(TargetFramework.Contains('-android'))">
    <LibraryProjectZip Include="Platforms/Android/Jar/autoreplyprint.aar" />
    <TransformFile Include="Platforms/Android/Transforms/Metadata.xaml" />
</ItemGroup>
<ItemGroup Condition="$(TargetFramework.Contains('-android'))">
    <AndroidNativeLibrary Include="Platforms/Android/libs/arm64-v8a/libautoreplyprint.so">
        <Abi>arm64-v8a</Abi>
    </AndroidNativeLibrary>
    <AndroidNativeLibrary Include="Platforms/Android/libs/arm64-v8a/libjnidispatch.so">
        <Abi>arm64-v8a</Abi>
    </AndroidNativeLibrary>
    <AndroidNativeLibrary Include="Platforms/Android/libs/armeabi/libautoreplyprint.so">
        <Abi>armeabi</Abi>
    </AndroidNativeLibrary>
    <AndroidNativeLibrary Include="Platforms/Android/libs/armeabi/libjnidispatch.so">
        <Abi>armeabi</Abi>
    </AndroidNativeLibrary>
    <AndroidNativeLibrary Include="Platforms/Android/libs/armeabi-v7a/libautoreplyprint.so">
        <Abi>armeabi-v7a</Abi>
    </AndroidNativeLibrary>
    <AndroidNativeLibrary Include="Platforms/Android/libs/armeabi-v7a/libjnidispatch.so">
        <Abi>armeabi-v7a</Abi>
    </AndroidNativeLibrary>
    <AndroidNativeLibrary Include="Platforms/Android/libs/x86/libautoreplyprint.so">
        <Abi>x86</Abi>
    </AndroidNativeLibrary>
    <AndroidNativeLibrary Include="Platforms/Android/libs/x86/libjnidispatch.so">
        <Abi>x86</Abi>
    </AndroidNativeLibrary>
    <AndroidNativeLibrary Include="Platforms/Android/libs/x86_64/libautoreplyprint.so">
        <Abi>x86_64</Abi>
    </AndroidNativeLibrary>
    <AndroidNativeLibrary Include="Platforms/Android/libs/x86_64/libjnidispatch.so">
        <Abi>x86_64</Abi>
    </AndroidNativeLibrary>
</ItemGroup>

Now I am trying to access one of the property like below;

var _autoReplyPrint = IAutoReplyPrint.Instance;

But that gives me an error "java.lang.ClassNotFoundException: Didn't find class "com.caysn.autoreplyprint.AutoReplyPrint""

I have tried making couple of changes in metadata.xml but it didn't work.

Any help or suggestion would be appreciated, thanks!!!

Nikhil Sathawara · Accepted Answer · 2025-04-10 05:23:55Z

0

I have found solution for the issue,

I have created android native binding project and added .aar file into that.
Used binding project as reference into main project and the error was gone.

Don't know why it was not working via directly adding .aar to main project.

answered Apr 10 at 5:23

Nikhil Sathawara

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