Go version: 1.7.5
GOPATH = D:/GoWork
React Native version 0.41
Code below is the binding go package at D:\GoWork\src\rngo\rngo\rngo.go
Very simple, just returning a string
package rngo
// RNcall is used to bind with RN
func RNcall() string {
return "From Go platform"
}
Running the below command from > D:\GoWork\src\rngo
gomobile bind -target android -o rngo.aar -v .
Verbose Output below seems to be fine
write C:\Users\Minty\AppData\Local\Temp\gomobile-work-855641675\gomobile_bind\classes.go
write C:\Users\Minty\AppData\Local\Temp\gomobile-work-855641675\gomobile_bind\classes.h
write C:\Users\Minty\AppData\Local\Temp\gomobile-work-855641675\gomobile_bind\classes.c
write C:\Users\Minty\AppData\Local\Temp\gomobile-work-855641675\gen\src\Java\interfaces.go
rngo/rngo
write C:\Users\Minty\AppData\Local\Temp\gomobile-work-855641675\fakegopath\pkg\android_arm\rngo\rngo.a
write C:\Users\Minty\AppData\Local\Temp\gomobile-work-855641675\gomobile_bind\go_rngomain.go
write C:\Users\Minty\AppData\Local\Temp\gomobile-work-855641675\gomobile_bind\go_main.go
write C:\Users\Minty\AppData\Local\Temp\gomobile-work-855641675\androidlib\main.go
write C:\Users\Minty\AppData\Local\Temp\gomobile-work-855641675\android\src\main\java\rngo\Rngo.java
write C:\Users\Minty\AppData\Local\Temp\gomobile-work-855641675\gomobile_bind\java_rngo.c
write C:\Users\Minty\AppData\Local\Temp\gomobile-work-855641675\gomobile_bind\rngo.h
write C:\Users\Minty\AppData\Local\Temp\gomobile-work-855641675\android\src\main\java\go\Universe.java
write C:\Users\Minty\AppData\Local\Temp\gomobile-work-855641675\android\src\main\java\go\error.java
write C:\Users\Minty\AppData\Local\Temp\gomobile-work-855641675\gomobile_bind\java_universe.c
write C:\Users\Minty\AppData\Local\Temp\gomobile-work-855641675\gomobile_bind\universe.h
write C:\Users\Minty\AppData\Local\Temp\gomobile-work-855641675\gomobile_bind\seq_android.go
write C:\Users\Minty\AppData\Local\Temp\gomobile-work-855641675\gomobile_bind\seq_android.c
write C:\Users\Minty\AppData\Local\Temp\gomobile-work-855641675\gomobile_bind\seq.h
write C:\Users\Minty\AppData\Local\Temp\gomobile-work-855641675\gomobile_bind\seq.go
Java
/C/Users/Minty/AppData/Local/Temp/gomobile-work-855641675/gomobile_bind command-line-arguments rngo/rngo Java
/C/Users/Minty/AppData/Local/Temp/gomobile-work-855641675/gomobile_bind command-line-arguments rngo/rngo Java
/C/Users/Minty/AppData/Local/Temp/gomobile-work-855641675/gomobile_bind command-line-arguments rngo/rngo Java
/C/Users/Minty/AppData/Local/Temp/gomobile-work-855641675/gomobile_bind
/# /C/Users/Minty/AppData/Local/Temp/gomobile-work-855641675/gomobile_bind
D:\Android\sdk\ndk-bundle\toolchains\x86_64-4.9\prebuilt\windows-x86_64/lib/gcc/x86_64-linux-android/4.9.x/../../../../x86_64-linux-android/bin\ld:
warning: skipping incompatible
D:\Android\sdk\ndk-bundle\platforms\android-21\arch-x86_64/usr/lib/liblog.so
while searching for log
D:\Android\sdk\ndk-bundle\toolchains\x86_64-4.9\prebuilt\windows-x86_64/lib/gcc/x86_64-linux-android/4.9.x/../../../../x86_64-linux-android/bin\ld:
warning: skipping incompatible
D:\Android\sdk\ndk-bundle\platforms\android-21\arch-x86_64/usr/lib/libdl.so
while searching for dl
D:\Android\sdk\ndk-bundle\toolchains\x86_64-4.9\prebuilt\windows-x86_64/lib/gcc/x86_64-linux-android/4.9.x/../../../../x86_64-linux-android/bin\ld:
warning: skipping incompatible
D:\Android\sdk\ndk-bundle\platforms\android-21\arch-x86_64/usr/lib/libc.so
while searching for c
D:\Android\sdk\ndk-bundle\toolchains\x86_64-4.9\prebuilt\windows-x86_64/lib/gcc/x86_64-linux-android/4.9.x/../../../../x86_64-linux-android/bin\ld:
warning: skipping incompatible
D:\Android\sdk\ndk-bundle\platforms\android-21\arch-x86_64/usr/lib/libdl.so
while searching for dl
command-line-arguments
aar: AndroidManifest.xml
aar: proguard.txt
aar: classes.jar
jar: META-INF/MANIFEST.MF
jar: go/LoadJNI.class
jar: go/Seq$GoObject.class
jar: go/Seq$Proxy.class
jar: go/Seq$Ref.class
jar: go/Seq$RefMap.class
jar: go/Seq$RefTracker.class
jar: go/Seq.class jar: go/Universe$proxyerror.class jar:
go/Universe.class
jar: go/error.class
jar: rngo/Rngo.class
aar: jni/armeabi-v7a/libgojni.so
aar: jni/arm64-v8a/libgojni.so
aar: jni/x86/libgojni.so
aar: jni/x86_64/libgojni.so
aar: R.txt
aar: res/
Successfully created rngo.aar since there is no error message and I can see that file at D:\GoWork\src\rngo\rngo.aar
I then manually import rngo.aar file into React Native project from android studio
File > New > New Module > Import .aar/.jar Package > #give the path
to rngo.aar#
File > Project Structure > app > Dependencies >
Module dependency > rngo.aar
Inside IDE, in MainActivity.java I can successfully do 'import go.rngo.*;', but I cannot get 'go.rngo.Rngo.RNcall()' or 'go.rngo.Rngo;' to work
Building this android app throws error 'cannot find symbol'
D:\RN\gomobile\android\app\src\main\java\com\gomobile\RngoModule.java:10:
error: cannot find symbol
import go.rngo;
^
symbol: class rngo
location: package go
1 error
:app:compileDebugJavaWithJavac FAILED
Conclusion
I am doing something horribly wrong, that I cannot get this simple thing to work. I wasted whole day on google but with no avail. Hence I need help getting this to work. All I need is a simple go code with that connects to react native hasselfree.
Thanks for reading all this. I appreciate it.
Thanks to eliasnaur. Finally, I got this working. As of go 1.7.* you dont have access to go package. Instead access your package directly like this
Before:
import go.rngo.Rngo;
After:(Since 1.7.*)
import rngo.Rngo;
Related
I'm trying to build java-cef on ubuntu following instructions from https://bitbucket.org/chromiumembedded/java-cef/wiki/BranchesAndBuilding.
At cmake step
cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Release ..
i get
-- Downloading clang-format from Google Storage...
Failed to fetch file gs://chromium-clang-format/942fc8b1789144b8071d3fc03ff0fcbe1cf81ac8 for tools/buildtools/linux64/clang-format. [Err: /home/x/Desktop/jcef/src/tools/buildtools/external_bin/gsutil/gsutil_4.15/gsutil/third_party/boto/boto/pyami/config.py:71: UserWarning: Unable to load AWS_CREDENTIAL_FILE ()
warnings.warn('Unable to load AWS_CREDENTIAL_FILE (%s)' % full_path)
Failure: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:727).
]
Terminal indicates that I'm using Python 2.7.15+.
How can i make it work? Many thanks.
In the folder where it has created the build jcef/src/tools/buildtools/download_from_google_storage.py change the version parameter of gsutil to a recent version, like 4.39. If you don't find specified file use a tool like find.
I am trying to compile a fat jar for my Scala project that contains all of my dependencies according to this stackoverflow post, so that I can use it in a Java application. I am new to Scala/Java/JVM, so please be patient. I am using IntelliJ and scala 2.12.4, however I am running my sbt commands from the OS X Terminal.
To start, I am able to run sbt assembly and get a padsystem-assembly-0.0.1.jar in /target/scala-2.12/. (I had to make an assembly.sbt and modify my build.sbt with a "Merge Strategy" to get it to work.) However when I try to run this jar with scala
computer: dir user$ scala target/scala-2.12/padsystem-assembly-0.0.1.jar
scala target/scala-2.12/padsystem-assembly-0.0.1.jar
java.lang.NullPointerException
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at scala.reflect.internal.util.ScalaClassLoader.$anonfun$tryClass$1(ScalaClassLoader.scala:45)
at scala.util.control.Exception$Catch.$anonfun$opt$1(Exception.scala:242)
at scala.util.control.Exception$Catch.apply(Exception.scala:224)
at scala.util.control.Exception$Catch.opt(Exception.scala:242)
at scala.reflect.internal.util.ScalaClassLoader.tryClass(ScalaClassLoader.scala:45)
at scala.reflect.internal.util.ScalaClassLoader.tryToInitializeClass(ScalaClassLoader.scala:41)
at scala.reflect.internal.util.ScalaClassLoader.tryToInitializeClass$(ScalaClassLoader.scala:41)
at scala.reflect.internal.util.ScalaClassLoader$URLClassLoader.tryToInitializeClass(ScalaClassLoader.scala:125)
at scala.reflect.internal.util.ScalaClassLoader.run(ScalaClassLoader.scala:92)
at scala.reflect.internal.util.ScalaClassLoader.run$(ScalaClassLoader.scala:91)
at scala.reflect.internal.util.ScalaClassLoader$URLClassLoader.run(ScalaClassLoader.scala:125)
at scala.tools.nsc.CommonRunner.run(ObjectRunner.scala:22)
at scala.tools.nsc.CommonRunner.run$(ObjectRunner.scala:21)
at scala.tools.nsc.JarRunner$.run(MainGenericRunner.scala:14)
at scala.tools.nsc.CommonRunner.runAndCatch(ObjectRunner.scala:29)
at scala.tools.nsc.CommonRunner.runAndCatch$(ObjectRunner.scala:28)
at scala.tools.nsc.JarRunner$.runAndCatch(MainGenericRunner.scala:14)
at scala.tools.nsc.JarRunner$.runJar(MainGenericRunner.scala:26)
at scala.tools.nsc.MainGenericRunner.runTarget$1(MainGenericRunner.scala:72)
at scala.tools.nsc.MainGenericRunner.run$1(MainGenericRunner.scala:85)
at scala.tools.nsc.MainGenericRunner.process(MainGenericRunner.scala:96)
at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:101)
at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)
And when I try to run it with java (which is my main goal):
computer: dir user$ java target/scala-2.12/padsystem-assembly-0.0.1.jar
Error: Could not find or load main class target.scala-2.12.padsystem-assembly-0.0.1.jar
Now, before you ask, "Are you sure your code is working?", I will note that I am able to sbt run my code successfully, and I can also sbt compile and sbt package it successfully as well.
Interestingly, if I try to sbt compile src/main/scala/OdinExtractor.scala from the base directory:
sbt compile src/main/scala/OdinExtractor.scala
[info] Loading settings from idea.sbt ...
[info] Loading global plugins from /Users/user/.sbt/1.0/plugins
[info] Loading project definition from /Users/user/PAD_IE/project/project
[info] Loading settings from assembly.sbt,plugins.sbt ...
[info] Loading project definition from /Users/user/PAD_IE/project
[info] Loading settings from build.sbt ...
[info] Set current project to padsystem (in build file:/Users/user/PAD_IE/)
[info] Executing in batch mode. For better performance use sbt's shell
[success] Total time: 4 s, completed Mar 16, 2018 3:35:49 PM
[error] Expected ID character
[error] Not a valid command: src (similar: set)
[error] Expected project ID
[error] Expected configuration
[error] Expected ':' (if selecting a configuration)
[error] Expected key
[error] Not a valid key: src (similar: sources, ps, run)
[error] src/main/scala/OdinExtractor.scala
[error] ^
OR if I try to scalac src/main/scala/OdinExtractor.scala or if I cd into the src/main/scala dir and try to run sbt compile OdinExtractor.scala I get:
[info] Loading settings from idea.sbt ...
[info] Loading global plugins from /Users/user/.sbt/1.0/plugins
[info] Updating ProjectRef(uri("file:/Users/user/.sbt/1.0/plugins/"), "global-plugins")...
[info] Done updating.
[info] Set current project to scala (in build file:/Users/user/PAD_IE/src/main/scala/)
[info] Executing in batch mode. For better performance use sbt's shell
[info] Compiling 1 Scala source to /Users/user/PAD_IE/src/main/scala/target/scala-2.12/classes ...
[error] /Users/user/PAD_IE/src/main/scala/OdinExtractor.scala:3:12: object clulab is not a member of package org
[error] import org.clulab.odin.Mention
[error] ^
[error] /Users/user/PAD_IE/src/main/scala/OdinExtractor.scala:4:12: object clulab is not a member of package org
[error] import org.clulab.processors.Document
[error] ^
[error] /Users/user/PAD_IE/src/main/scala/OdinExtractor.scala:5:12: object vinci is not a member of package org
[error] import org.vinci.pad.padsystem.PadSystem
[error] ^
[error] three errors found
[error] (Compile / compileIncremental) Compilation failed
[error] Total time: 1 s, completed Mar 16, 2018 3:38:06 PM
Why would I be able to sbt run my code successfully, but not be able to run the jar with scala or java, especially when all of the dependencies are included in the fat jar?
Why do I get errors with my depdencies when I do scalac src/main/scala/OdinExtractor.scala and sbt compile OdinExtractor.scala? The first I am guessing because scalac wants something like
scalac -cp "all:of:the:classpath:stuff:ever" OdinExtractor.scala.
(By the way, I can't figure out how to do this...)
Which, as I understand, is why we use sbt to begin with, yes? To avoid the messy classpath stuff. Which brings me to my next question: Why does sbt compile fail when I point it at the specific file? And why does it fail when I run it from the src/main/scala directory? I don't know about the first one, but my guess for the second question is that sbt must always be run from the base directory?
Back to the main goal: producing a fat jar that I can run with Java... Does anyone have any idea how I can debug this? I don't understand why the assembly jar fails, but the code still runs with sbt run. I originally thought the best way to debug this would be to just compile the object with def main(), and try to run it with both Scala and Java, but this has proven very troublesome.
In the end, I have an eerie feeling that perhaps all of this boils down to either 1) my confusion about classpaths, or 2) perhaps my project structure? But since my stuff runs with sbt run, I'm just at a total loss... Please help! Let me know if there's anything else I need to add to my post to make it more clear. Thanks!
Edit -
Per my build.sbt I did include the scala-library jar, so that it can be parsed by Java.
I.e. "org.scala-lang" % "scala-library" % "2.12.4"
Also, if its of any importance, my Object has a def main instead of extends App. Not sure if that matters...
The answer ended up being with the build.sbt. I found the answer in this stackoverflow post. I had to add
mainClass in assembly := Some("NameOfMyMainClass")
into the build.sbt.
After that, I did
sbt clean assembly
and was able to run both java -jar target/.../my-fat-jar.jar and scala target/.../my-fat-jar.jar.
Shoutout to #laughedelic for pointing out that I should use java -jar, and for answering my question about sbt compile src/... :')
I'm using Delphi 10.1 Berlin. I want to call Java codes from Delphi. So, I created JAR file in Android Studio (this link helped to me). Then I opened Java2OP.exe from C:\Program Files (x86)\Embarcadero\Studio\18.0\bin\converters\java2op directory. I moved the jar file to this directory. Then I worked this commands in CMD:
SET PATH=%PATH%;"C:\Program Files\Java\jdk1.8.0_60\bin"
Java2OP.exe -jar ..\libmylib.jar -unit ..\Androidapi.JNI.MyLib
But I get this error:
Warning: error opening ReservedWordsOP.txt
Warning: error opening ReservedWordsC.txt
Parsing xml: C:\Program Files (x86)\Embarcadero\Studio\18.0\bin\converters\java2op\bootclasses.xml
Parsing jar: ..\libmylib.jar
class or Interface expected
This my Java class for JAR:
public class Test
{
public String work()
{
return "Hello World!";
}
}
Also I tried different Java codes, but result is same. How can I solve this problem?
I have the same problem, and solved it removing spaces from path files.
Probably the Java2OP is calling the Java passing the path without quotes.
I am continuing to have trouble with the import.bat file for the Neo4j batch importer. I started a new thread as the original problem was resolved.
from the command prompt I run
import.bat test.db sample\nodes.csv sample\rels.csv
With some variations on the path listing for the files, including absolute paths. I continue to get the following error message
The system cannot find the path specified.
Error: Could not find or load main class org.neo4j.batchimport.Importer
I also tried running import.sh from Cygwin and in my Debian VM but keep getting the error
Error: Could not find or load main class org.neo4j.batchimport.Importer
What am I doing wrong?
Please download the zip-file, not the github clone.
This is a pre-build binary as outlined in the readme, that doesn't require that you have to have maven installed to build it.
Bear with me - this is a long description, but I wanted to include all details. I'm trying use android NDK and JNI for building OpenCV Android apps.
I'm following this tutorial to get everything installed:
http://www.stanford.edu/class/ee368/Android/Tutorial-2-OpenCV-for-Android-Setup-Macintosh-API8.pdf
The following installed just fine:
/usr/bin/g++
/usr/local/bin/swig
/usr/bin/cmake
/usr/bin/make
/Developer/pcre-8.32/
Contents of my .bashrc file:
export NDK=/Users/Me/Code/Android/android-ndk-r4-crystax
export SDK=/Users/Me/Code/Android/adt-bundle-mac-x86_64-20130219/
export OPCV=/Users/Me/Code/OpenCV/opencv
export PATH=$NDK:$SDK/tools:$SDK/platform-tools:$PATH
export NDK_ROOT=$NDK
Making OpenCV libraries went just fine.
Due to complaint in using make, I had to make a small edit in /Users/Me/Code/OpenCV/opencv/android/android-jni/local.env.mk which looked like so:
#ANDROID_NDK_ROOT=$(HOME)/android-ndk-r4-crystax
ANDROID_NDK_ROOT=/Users/Me/Code/Android/android-ndk-r4-crystax
Then upon trying again to make in the android-jni, directory, disaster struck:
/Users/Me/Code/Android/android-ndk-r4-crystax/ndk-build OPENCV_CONFIG=../build/android-opencv.mk \
PROJECT_PATH= ARM_TARGETS="armeabi armeabi-v7a" V=
Gdbserver : [arm-eabi-4.4.0] /Users/Me/Code/OpenCV/opencv/android/android-jni/libs/armeabi/gdbserver
Gdbsetup : /Users/Me/Code/OpenCV/opencv/android/android-jni/libs/armeabi/gdb.setup
Gdbsetup : + source directory /Users/Me/Code/OpenCV/opencv/android/android-jni/jni
Gdbserver : [arm-eabi-4.4.0] /Users/Me/Code/OpenCV/opencv/android/android-jni/libs/armeabi-v7a/gdbserver
Gdbsetup : /Users/Me/Code/OpenCV/opencv/android/android-jni/libs/armeabi-v7a/gdb.setup
Gdbsetup : + source directory /Users/Me/Code/OpenCV/opencv/android/android-jni/jni
SharedLibrary : libandroid-opencv.so
/Users/Me/Code/Android/android-ndk-r4-crystax/build/prebuilt/darwin-x86/arm-eabi-4.4.0/bin/../lib/gcc/arm-eabi/4.4.0/../../../../arm-eabi/bin/ld: cannot find -lopencv_calib3d
collect2: ld returned 1 exit status
make[1]: *** [/Users/Me/Code/OpenCV/opencv/android/android-jni/obj/local/armeabi/libandroid-opencv.so] Error 1
make: *** [libs/armeabi-v7a/libandroid-opencv.so] Error 2
I thought perhaps this was a pkg-config error, but that appears to be set up as well, though in my old install of OpenCV. Below is the output of pkg-config --cflags --libs opencv:
-I/usr/include/opencv /usr/lib/libopencv_calib3d.dylib /usr/lib/libopencv_contrib.dylib /usr/lib/libopencv_core.dylib /usr/lib/libopencv_features2d.dylib /usr/lib/libopencv_flann.dylib /usr/lib/libopencv_gpu.dylib /usr/lib/libopencv_highgui.dylib /usr/lib/libopencv_imgproc.dylib /usr/lib/libopencv_legacy.dylib /usr/lib/libopencv_ml.dylib /usr/lib/libopencv_nonfree.dylib /usr/lib/libopencv_objdetect.dylib /usr/lib/libopencv_photo.dylib /usr/lib/libopencv_stitching.dylib /usr/lib/libopencv_ts.dylib /usr/lib/libopencv_video.dylib /usr/lib/libopencv_videostab.dylib
The install built by this particular tutorial has placed an opencv.pc file at this location:
/Users/Me/Code/OpenCV/opencv/build/unix-install
BUT Running the below and trying make again doesn't fix the problem:
export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/Users/Me/Code/OpenCV/opencv/build/unix-install
I can't figure out what is wrong. I've been battling with this problem for about a month on and off, and finally needed some outside opinions. Any ideas?
Error message says
cannot find -lopencv_calib3d collect2: ld returned 1 exit status
It means linker can't find opencv_calib3d library. It may have name libopencv_calib3d.a or libopencv_calib3d.so. So you need find one of them and add path to this file to your LD_LIBRARY_PATH env variable.
I mean if let's say folder /Users/Me/Code/OpenCV/opencv/lib contains libopencv_calib3d.so then you need execute something like following before make:
export LD_LIBRARY_PATH=/Users/Me/Code/OpenCV/opencv/lib:$LD_LIBRARY_PATH
Try the official OpenCV4Android tutorials at http://docs.opencv.org/trunk/doc/tutorials/introduction/android_binary_package/android_dev_intro.html