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Question by Al3iks · Aug 13, 2014 at 03:21 PM · dllnotfoundexceptionandroid tab

DllNotFoundException : MonoPosixHelper

Hi everyone !

i've got two issue with my app.

First, I create an app on Unity which communicates with an Arduino through serial port and it work really fine on my computer (windows 7) but when i build it on an Android tablet, "DllNotFoundException : MonoPosixHelper" appears on debug console.

Second, how you do to find what port number use to open serialPort of Android tablet.

Thanks a lot for futures reply.

A.

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avatar image Fallouturama · Aug 10, 2016 at 03:04 PM 0
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Same error here. opening /dev/ttyA$$anonymous$$A0 device in my android phone, and any other similar device found on /dev/ causes the same $$anonymous$$onoPosixHelper.

Permissions problem? Native library opening this devices not implemented or missing? Already opened ports?

Any workaround?

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Answer by Tokars · Oct 31, 2018 at 06:01 PM

I'd a similar problem with the build on Android Studio, but my DllNotFoundException: MonoPosixHelper was with using System.IO.Compression

https://assetstore.unity.com/packages/tools/integration/gzipstream-deflatestream-unity-io-compression-31902 This asset solved it, maybe it will be useful some one else.

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avatar image belcro-d5 · Oct 21, 2019 at 05:12 AM 0
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This asset solved the problem!

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Answer by qmtco · Mar 03, 2016 at 03:18 PM

you must add jar file for manage port android.i same problem then add jar for manage port to project and run on tablet android fix all error

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avatar image maciekfreak · Apr 30, 2016 at 07:51 AM 0
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Could you explain what JAR file must be included?

avatar image Fallouturama · Aug 10, 2016 at 03:08 PM 0
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The missing jar file makes any sense? Are you using ,like me, the native library already existing on Unity? A jar library sounds to me like a custom helper library, which i presume this is not our case.

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