library "libopencv_java.so" not found

[imaNNeo]

hi, i have this issue,
anyone can help me???
opencv E/linker: load_library(linker.cpp:759): library "libopencv_java.so" not found 02-01 22:00:18.204 11789-11789/com.neo.testopencv E/linker: soinfo_link_image(linker.cpp:1652): could not load library "libopencv_java.so" needed by "libopenalpr-native.so"; caused by load_library(linker.cpp:759): library "libopencv_java.so" not found 02-01 22:00:18.204 11789-11789/com.neo.testopencv E/dalvikvm: dlopen("/data/app-lib/com.neo.testopencv-1/libopenalpr-native.so") failed: Cannot load library: soinfo_link_image(linker.cpp:1652): could not load library "libopencv_java.so" needed by "libopenalpr-native.so"; caused by load_library(linker.cpp:759): library "libopencv_java.so" not found 02-01 22:00:18.209 11789-11789/com.neo.testopencv E/AndroidRuntime: FATAL EXCEPTION: main java.lang.UnsatisfiedLinkError: Cannot load library: soinfo_link_image(linker.cpp:1652): could not load library "libopencv_java.so" needed by "libopenalpr-native.so"; caused by load_library(linker.cpp:759): library "libopencv_java.so" not found at java.lang.Runtime.loadLibrary(Runtime.java:372) at java.lang.System.loadLibrary(System.java:514) at org.openalpr.AlprJNIWrapper.<clinit>(AlprJNIWrapper.java:9) at org.openalpr.OpenALPR$Factory.create(OpenALPR.java:78) at com.neo.testopencv.MainActivity.onActivityResult(MainActivity.java:61) at android.app.Activity.dispatchActivityResult(Activity.java:5383) at android.app.ActivityThread.deliverResults(ActivityThread.java:3575) at android.app.ActivityThread.handleSendResult(ActivityThread.java:3622) at android.app.ActivityThread.access$1100(ActivityThread.java:169) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1436) at android.os.Handler.dispatchMessage(Handler.java:107) at android.os.Looper.loop(Looper.java:194) at android.app.ActivityThread.main(ActivityThread.java:5433) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:525) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:924) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:691) at dalvik.system.NativeStart.main(Native Method)

[SandroMachado]

@imaNNeoFighT which device are you using?

[imaNNeo]

huawei honor 3c u10,
of course i don't inistall openCv in my computer ,
it can related to this???

[SandroMachado]

No, you computer configuration is not related with this issue. Did you tried with the demo app at the releases tab?

[JerzyPuchalski]

Seems this device is running Android 4.2 and according to this StackOverflow answer it might be needed to additionally load opencv library explicitly.

[SandroMachado]

Yeah, that could be the issue. At this moment I am only loading the openalpr-native module.

[imaNNeo]

@SandroMachado i downloaded sample apk and when i take picture,
i get ForceClose.

[SandroMachado]

That is a known issue. At the second time it should work if is not related to any other missing configuration. Can you please test it again?

[SandroMachado]

Closed without support to reproduce.

[mercuriete]

I had the same issue:

it was fixed with this lines (the order is important):

        System.loadLibrary("lept");
        System.loadLibrary("tess");
        System.loadLibrary("opencv_java");

when you execute the app in android 4.2 and prior android cannot understand where are the libraries and you have to register it manually.

I put these lines in onCreate of MainActivity.

So this is a real bug because in gradle you said:

        minSdkVersion 16

if you want i can create a pull requet.

[SandroMachado]

@mercuriete can you please make the PR?