Android Open Source - bitfynd-wallet-android Nfc

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License

The source code is released under:

GNU General Public License

Java Source Code

/*
 * Copyright 2011-2014 the original author or authors.
 */*from   w w  w.  j  a v a 2 s  . c om*/
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package de.schildbach.wallet.util;

import java.util.Arrays;

import javax.annotation.CheckForNull;
import javax.annotation.Nonnull;

import android.nfc.NdefMessage;
import android.nfc.NdefRecord;

import com.google.common.base.Charsets;

/**
 * @author Andreas Schildbach
 */
public class Nfc
{
  public static NdefRecord createMime(@Nonnull final String mimeType, @Nonnull final byte[] payload)
  {
    final byte[] mimeBytes = mimeType.getBytes(Charsets.US_ASCII);
    final NdefRecord mimeRecord = new NdefRecord(NdefRecord.TNF_MIME_MEDIA, mimeBytes, new byte[0], payload);
    return mimeRecord;
  }

  @CheckForNull
  public static byte[] extractMimePayload(@Nonnull final String mimeType, @Nonnull final NdefMessage message)
  {
    final byte[] mimeBytes = mimeType.getBytes(Charsets.US_ASCII);

    for (final NdefRecord record : message.getRecords())
    {
      if (record.getTnf() == NdefRecord.TNF_MIME_MEDIA && Arrays.equals(record.getType(), mimeBytes))
        return record.getPayload();
    }

    return null;
  }
}

Java Source Code List

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