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Unity DLL Not Found Exception in Android Application

I'm writing an android plugin for Unity, libSolidCapture.so. This plugin is using a shared library, named liblo.so, an OSC library When I'm trying to launch the application on an android device, I get the following error :
Unable to load library '/libSolidCapture.so', native render plugin
support disabled: java.lang.UnsatisfiedLinkError: dlopen failed:
library "liblo.so.7" not found
then :
DllNotFoundException: SolidCapture
When i build liblo for android, liblo.so.7 is created, but when I try to drag and drop it in Unity, it seems to be considered as a folder, and not a library !
When I build an apk, Unity includes liblo.so, but not liblo.so.7
Do you have any idea of what I'm doing wrong ?

build opencv 3.0 for android with extra modules

I built the OpenCV 3.0 beta with extra modules. The build was without java libraries and that was the only way that I was able to build the OpenCV 3.0 beta without getting errors and there is no problem because I only need the native part.
The problem that I have is when I try to implement the text module I get an error that the library can´t be resolved. The line to implement the library is this:
#include <opencv2/text.hpp>
So my question is: What can I do to resolve this problem? Do I have to move some include files to some location?

Note that OCRTesseract class (inside of opencv2/text.hpp) provides an interface with the tesseract-ocr API (v3.02.02) in C++ and it is compiled only when tesseract-ocr is correctly installed.
First of all you should compile tesseract (and its dependencies) to Android.

Unable to dlopen, Cannot load library on android 2.1 but can on 2.2+

I have compiled a JNI library for Android with the NDK that statically links against a libcrypto.a that I have compiled using this project, https://github.com/fries/android-external-openssl which dynamically links against libdl.so.
Even though the NDKs platforms/android-x/arch-arm/usr/lib directory has a libdl.so for every version of android when I try to load my library on Android 2.1 I get the following error:
Trying to load lib /data/data/package.name/lib/libmylibrary.so 0x44e83a28
Unable to dlopen(/data/data/package.name/lib/libmylibrary.so): Cannot load library: reloc_library[1244]: 30 cannot locate 'dladdr'...
and then proceeds to crash with an UnsatisfiedLinkError, but on 2.2+ my native library links and works perfectly
any thoughts on what is happening to me or how to fix it?

So while looking into this problem I have discovered that while libdl exists in all versions of android dladdr() was added to the C library in 2.2
the relevant lines of the NDK changes.html are as follows:
- C Library changes:
For android-8 (a.k.a. Android 2.2):
- add DL_info and dladdr().

android ndk using mupdf library

I want to make a pdf viewer program in android phone. So, I purchased the mupdf library.
I built the mupdf c++ classes and have 'libmibookreader.so' file.
And I also compiled the native function classes.
Then, I tried to run the application , but I have some errors.
Tag Message
AndroidRuntime java.lang.UnsatisfiedLinkError: open

i think you had not load library properly or may be you had not given the name properly in System.load("libname");

What is your android version?
on 2.1 and before, the lib libjnigraphics.so is missing and the mupdflib need it

android ndk mupdf build error

I am trying to make a project to read pdf in android phone.
So, I created the normal Android Project and installed the android-ndk-r6-windows.
And I built the 'libmibookreader.so' and set the native functions in my java class.
But after compiling my project I have a serious Error.
Caused by: java.lang.UnsatisfiedLinkError: Library mibookreader not found
Why this error caused?
I really don't know. I referenced the address of "http://flytgr.thoth.kr/blog/697421".
I followed down as the reference document described.

This is because your library was not loaded by the kernel. Are you sure that you placed your library inside the libs/armeabi/ folder of your project?
Check the logcat when you deploy your application, you should see some messages there that your library was loaded.
If you don't you could also try to use System.loadLibrary(libPath); to manually load your library.