Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * This file is part of KITCard Reader.
 *  2012 Philipp Kern <phil@philkern.de>
 *
 * KITCard Reader is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * KITCard Reader is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with KITCard Reader. If not, see <http://www.gnu.org/licenses/>.
 */

import android.nfc.Tag;
import android.nfc.tech.MifareClassic;
import android.nfc.tech.NfcA;
import android.os.Bundle;
import android.os.IBinder;
import android.os.Parcel;

public class Main {
    /**
     * Repairs the broken tag on HTC devices running Android 5.x
     * <p/>
     * "It seems, the reason of this bug in TechExtras of NfcA is null. However, TechList contains MifareClassic." -bildin
     * For more information please refer to https://github.com/ikarus23/MifareClassicTool/issues/52#issuecomment-103797115
     * <p/>
     * Code source: https://github.com/ikarus23/MifareClassicTool/issues/52#issuecomment-104277445
     *
     * @param oTag The broken tag
     * @return The fixed tag
     */
    public static Tag repairTag(Tag oTag) {
        if (oTag == null)
            return null;

        String[] sTechList = oTag.getTechList();

        Parcel oParcel, nParcel;

        oParcel = Parcel.obtain();
        oTag.writeToParcel(oParcel, 0);
        oParcel.setDataPosition(0);

        int len = oParcel.readInt();
        byte[] id = null;
        if (len >= 0) {
            id = new byte[len];
            oParcel.readByteArray(id);
        }
        int[] oTechList = new int[oParcel.readInt()];
        oParcel.readIntArray(oTechList);
        Bundle[] oTechExtras = oParcel.createTypedArray(Bundle.CREATOR);
        int serviceHandle = oParcel.readInt();
        int isMock = oParcel.readInt();
        IBinder tagService;
        if (isMock == 0) {
            tagService = oParcel.readStrongBinder();
        } else {
            tagService = null;
        }
        oParcel.recycle();

        int nfca_idx = -1;
        int mc_idx = -1;

        for (int idx = 0; idx < sTechList.length; idx++) {
            if (sTechList[idx].equals(NfcA.class.getName())) {
                nfca_idx = idx;
            } else if (sTechList[idx].equals(MifareClassic.class.getName())) {
                mc_idx = idx;
            }
        }

        if (nfca_idx >= 0 && mc_idx >= 0 && oTechExtras[mc_idx] == null) {
            oTechExtras[mc_idx] = oTechExtras[nfca_idx];
        } else {
            return oTag;
        }

        nParcel = Parcel.obtain();
        nParcel.writeInt(id.length);
        nParcel.writeByteArray(id);
        nParcel.writeInt(oTechList.length);
        nParcel.writeIntArray(oTechList);
        nParcel.writeTypedArray(oTechExtras, 0);
        nParcel.writeInt(serviceHandle);
        nParcel.writeInt(isMock);
        if (isMock == 0) {
            nParcel.writeStrongBinder(tagService);
        }
        nParcel.setDataPosition(0);

        Tag nTag = Tag.CREATOR.createFromParcel(nParcel);

        nParcel.recycle();

        return nTag;
    }
}