How to pass a JNI C# class into Java or handle this situation?

Question

I\'m trying to call a Java method from C#, it\'s called like this from java:

EgamePay.pay(thisActivity, payAlias, new EgamePayListener() {
            @Override
         


        

Answer 1

You can link these projects together in VS201X via references. From here, you should be able to fill in the other layers(JNI/Java), and then start passing your pointers(as a long) around the system and invoking your functions.

C# Layer

Program.cs

namespace CSharpLayer
{
class Program : CLILayer.CLIObject
{
    static void Main(string[] args)
    {
        Program p = new Program();

        p.invokeJava();
    }

    public void invokeJava()
    {
        //Call into CLI layer function to loadJVM, call Java code, etc
        loadJava();
    }

    public override void callback(string data)
    {
        //This will be called from the CLI Layer.
    }

}
}

C++/CLI Layer - DLL C++ project w/ CLR support(/clr)

CLIObject.h

#pragma once

namespace CLILayer
{
public ref class CLIObject
{
    public:
        CLIObject();
        ~CLIObject();

        void loadJava(System::String^ jvm, System::String^ classpath);

        virtual void callback(System::String^ data) = 0;
};
}

CLIObject.cpp

#include "CLIObject.h"
#include 

#include 
#include 

using namespace msclr::interop;
using namespace CLILayer;

CLIObject::CLIObject()
{   
}

CLIObject::~CLIObject()
{
}
CLIObject::loadJava(System::String^ jvmLocaion, System::String^ classpath)
{
    std::string _jvmLoc = marshal_as(jvmLocation);
    std::string _classpath = marshal_as(classpath);
}