com.codebutler.farebot.activities.ReadingTagActivity.java Source code

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Here is the source code for com.codebutler.farebot.activities.ReadingTagActivity.java

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/*
 * ReadingTagActivity.java
 *
 * Copyright (C) 2011 Eric Butler
 *
 * Authors:
 * Eric Butler <eric@codebutler.com>
 *
 * 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 com.codebutler.farebot.activities;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.ContentValues;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.nfc.Tag;
import android.os.AsyncTask;
import android.os.Bundle;
import android.widget.TextView;
import com.codebutler.farebot.R;
import com.codebutler.farebot.UnsupportedTagException;
import com.codebutler.farebot.Utils;
import com.codebutler.farebot.cepas.CEPASCard;
import com.codebutler.farebot.mifare.DesfireCard;
import com.codebutler.farebot.mifare.MifareCard;
import com.codebutler.farebot.provider.CardProvider;
import com.codebutler.farebot.provider.CardsTableColumns;
import org.apache.commons.lang.ArrayUtils;

public class ReadingTagActivity extends Activity {
    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.activity_reading_tag);

        resolveIntent(getIntent());
    }

    @Override
    public void onNewIntent(Intent intent) {
        resolveIntent(intent);
    }

    private void resolveIntent(Intent intent) {
        final TextView textView = (TextView) findViewById(R.id.textView);

        try {
            Bundle extras = intent.getExtras();

            final Tag tag = (Tag) extras.getParcelable("android.nfc.extra.TAG");
            ;
            final String[] techs = tag.getTechList();

            new AsyncTask<Void, String, MifareCard>() {
                Exception mException;

                @Override
                protected MifareCard doInBackground(Void... params) {
                    try {
                        if (ArrayUtils.contains(techs, "android.nfc.tech.NfcB"))
                            return CEPASCard.dumpTag(tag.getId(), tag);
                        else if (ArrayUtils.contains(techs, "android.nfc.tech.IsoDep"))
                            return DesfireCard.dumpTag(tag.getId(), tag);
                        else
                            throw new UnsupportedTagException(techs, Utils.getHexString(tag.getId()));
                    } catch (Exception ex) {
                        mException = ex;
                        return null;
                    }
                }

                @Override
                protected void onPostExecute(MifareCard card) {
                    if (mException != null) {
                        if (mException instanceof UnsupportedTagException) {
                            UnsupportedTagException ex = (UnsupportedTagException) mException;
                            new AlertDialog.Builder(ReadingTagActivity.this).setTitle("Unsupported Tag")
                                    .setMessage(ex.getMessage()).setCancelable(false)
                                    .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
                                        public void onClick(DialogInterface arg0, int arg1) {
                                            finish();
                                        }
                                    }).show();
                        } else {
                            Utils.showErrorAndFinish(ReadingTagActivity.this, mException);
                        }
                        return;
                    }

                    try {
                        String cardXml = Utils.xmlNodeToString(card.toXML().getOwnerDocument());

                        ContentValues values = new ContentValues();
                        values.put(CardsTableColumns.TYPE, card.getCardType().toInteger());
                        values.put(CardsTableColumns.TAG_SERIAL, Utils.getHexString(card.getTagId()));
                        values.put(CardsTableColumns.DATA, cardXml);
                        values.put(CardsTableColumns.SCANNED_AT, card.getScannedAt().getTime());

                        Uri uri = getContentResolver().insert(CardProvider.CONTENT_URI_CARD, values);
                        startActivity(new Intent(Intent.ACTION_VIEW, uri));
                        finish();
                    } catch (Exception ex) {
                        Utils.showErrorAndFinish(ReadingTagActivity.this, ex);
                    }
                }

                @Override
                protected void onProgressUpdate(String... values) {
                    textView.setText(values[0]);
                }

            }.execute();

        } catch (Exception ex) {
            Utils.showErrorAndFinish(this, ex);
        }
    }
}