Quick and dirty way how to use libnfc in java

build-swig.sh

#!/bin/bash

# set your own paths and gcc options

NFCPATH=/usr/local/Cellar/libnfc/1.7.0
JAVAPATH=/Library/Java/JavaVirtualMachines/jdk1.7.0_71.jdk/Contents/Home

swig -java -I$NFCPATH/include/ -outdir src/nfc -package nfc nfc.i
gcc -dynamiclib -I$NFCPATH/include/ -I$JAVAPATH/include/ -I$JAVAPATH/include/darwin/ -lnfc -L$NFCPATH/lib -o nfcjni.dylib nfc_wrap.c

LibnfcJava.java

package nfc;

import javax.smartcardio.CommandAPDU;

public class LibnfcJava {
    final protected static char[] hexArray = "0123456789ABCDEF".toCharArray();

    public static String bytesToHex(byte[] bytes, int count) {
        int len = Math.min(bytes.length, count);
        char[] hexChars = new char[len * 3];
        for (int j = 0; j < len; j++) {
            int v = bytes[j] & 0xFF;
            hexChars[j * 3] = hexArray[v >>> 4];
            hexChars[j * 3 + 1] = hexArray[v & 0x0F];
            hexChars[j * 3 + 2] = ' ';
        }
        return new String(hexChars);
    }

    public static String bytesToHex(byte[] bytes) {
        return bytesToHex(bytes, bytes.length);
    }

    public static void main(String[] args) {
        System.load("nfcjni.dylib"); // TODO : you must add full path or loading fails

        SWIGTYPE_p_p_nfc_context ctxPtr = nfc.new_SWIGTYPE_p_p_nfc_context();
        nfc.nfc_init(ctxPtr);
        SWIGTYPE_p_nfc_context ctx = nfc.SWIGTYPE_p_p_nfc_context_value(ctxPtr);
        nfc.delete_SWIGTYPE_p_p_nfc_context(ctxPtr);

        SWIGTYPE_p_nfc_device reader = nfc.nfc_open(ctx, null);
        System.out.println("NFC version: "+nfc.nfc_version());

        System.out.println("Initiator init result: "+nfc.nfc_initiator_init(reader));

        nfc_modulation mod = new nfc_modulation();
        mod.setNbr(nfc_baud_rate.NBR_106);
        mod.setNmt(nfc_modulation_type.NMT_ISO14443A);

        nfc_target target = new nfc_target();
        System.out.println("Select passive target result: "+nfc.nfc_initiator_select_passive_target(reader, mod, new byte[0], 0, target));
        nfc_iso14443a_info nai = target.getNti().getNai();
        System.out.println("ATS: " + bytesToHex(nai.getAbtAts(), (int) nai.getSzAtsLen()));

        byte[] result = new byte[256];
        byte[] command = new CommandAPDU(0x00, 0xA4, 0x04, 0x00, "1PAY.SYS.DDF01".getBytes()).getBytes();

        int count = nfc.nfc_initiator_transceive_bytes(reader, command, command.length, result, result.length, 0);
        System.out.println("Response length: " + count);
        System.out.println("Response data: " + bytesToHex(result, count));

        nfc.nfc_close(reader);
        nfc.nfc_exit(ctx);
    }

}

nfc.i

%module nfc
%{
#include <nfc/nfc.h>
#include <nfc/nfc-types.h>
#include <nfc/nfc-emulation.h>
%}

// for some reason these functions caused linking failures on osx
%ignore iso14443b_crc;
%ignore iso14443b_crc_append;
%ignore iso14443a_locate_historical_bytes;



%include "arrays_java.i"
JAVA_ARRAYS_DECL(uint8_t, jbyte, Byte, Uint8)
JAVA_ARRAYS_IMPL(uint8_t, jbyte, Byte, Uint8)
JAVA_ARRAYS_TYPEMAPS(uint8_t, byte, jbyte, Uint8, "[B")
%apply uint8_t[] { uint8_t* }


%include <nfc/nfc.h>
%include <nfc/nfc-types.h>
%include <nfc/nfc-emulation.h>

%include "cpointer.i"
%pointer_functions(nfc_context*, SWIGTYPE_p_p_nfc_context)

Hello,
Do you know how do I send a file to an android mobile device with this wrapper in java?