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

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

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/*
 * AddKeyActivity.java
 *
 * Copyright (C) 2012 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.AlertDialog;
import android.app.PendingIntent;
import android.content.ContentValues;
import android.content.Intent;
import android.nfc.NfcAdapter;
import android.nfc.Tag;
import android.nfc.tech.IsoDep;
import android.nfc.tech.MifareClassic;
import android.nfc.tech.MifareUltralight;
import android.nfc.tech.NfcF;
import android.os.Bundle;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.RadioButton;
import android.widget.TextView;
import com.actionbarsherlock.app.SherlockActivity;
import com.codebutler.farebot.BetterAsyncTask;
import com.codebutler.farebot.R;
import com.codebutler.farebot.Utils;
import com.codebutler.farebot.keys.ClassicCardKeys;
import com.codebutler.farebot.keys.ClassicSectorKey;
import com.codebutler.farebot.provider.CardKeyProvider;
import com.codebutler.farebot.provider.KeysTableColumns;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.ArrayUtils;

import java.io.IOException;
import java.io.InputStream;

public class AddKeyActivity extends SherlockActivity {
    private NfcAdapter mNfcAdapter;
    private PendingIntent mPendingIntent;
    private String[][] mTechLists = new String[][] { new String[] { IsoDep.class.getName() },
            new String[] { MifareClassic.class.getName() }, new String[] { MifareUltralight.class.getName() },
            new String[] { NfcF.class.getName() } };

    private byte[] mKeyData;
    private String mTagId;
    private String mCardType;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_add_key);
        getWindow().setLayout(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.FILL_PARENT);

        findViewById(R.id.cancel).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                setResult(RESULT_CANCELED);
                finish();
            }
        });

        findViewById(R.id.add).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                final String keyType = ((RadioButton) findViewById(R.id.is_key_a)).isChecked()
                        ? ClassicSectorKey.TYPE_KEYA
                        : ClassicSectorKey.TYPE_KEYB;

                new BetterAsyncTask<Void>(AddKeyActivity.this, true, false) {
                    @Override
                    protected Void doInBackground() throws Exception {
                        ClassicCardKeys keys = ClassicCardKeys.fromDump(keyType, mKeyData);

                        ContentValues values = new ContentValues();
                        values.put(KeysTableColumns.CARD_ID, mTagId);
                        values.put(KeysTableColumns.CARD_TYPE, mCardType);
                        values.put(KeysTableColumns.KEY_DATA, keys.toJSON().toString());

                        getContentResolver().insert(CardKeyProvider.CONTENT_URI, values);

                        return null;
                    }

                    @Override
                    protected void onResult(Void unused) {
                        Intent intent = new Intent(AddKeyActivity.this, KeysActivity.class);
                        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                        startActivity(intent);
                        finish();
                    }
                }.execute();
            }
        });

        mNfcAdapter = NfcAdapter.getDefaultAdapter(this);

        Utils.checkNfcEnabled(this, mNfcAdapter);

        Intent intent = getIntent();
        intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
        mPendingIntent = PendingIntent.getActivity(this, 0, intent, 0);

        if (getIntent().getAction() != null && getIntent().getAction().equals(Intent.ACTION_VIEW)
                && getIntent().getData() != null) {
            try {
                InputStream stream = getContentResolver().openInputStream(getIntent().getData());
                mKeyData = IOUtils.toByteArray(stream);
            } catch (IOException e) {
                Utils.showErrorAndFinish(this, e);
            }
        } else {
            finish();
        }
    }

    @Override
    protected void onResume() {
        super.onResume();
        mNfcAdapter.enableForegroundDispatch(this, mPendingIntent, null, mTechLists);
    }

    @Override
    protected void onPause() {
        super.onPause();
        mNfcAdapter.disableForegroundDispatch(this);
    }

    @Override
    protected void onNewIntent(Intent intent) {
        Tag tag = (Tag) intent.getParcelableExtra("android.nfc.extra.TAG");
        mTagId = Utils.getHexString(tag.getId(), "");

        if (ArrayUtils.contains(tag.getTechList(), "android.nfc.tech.MifareClassic")) {
            mCardType = "MifareClassic";
            ((TextView) findViewById(R.id.card_type)).setText("MIFARE Classic");
            ((TextView) findViewById(R.id.card_id)).setText(mTagId);
            ((TextView) findViewById(R.id.key_data)).setText(Utils.getHexString(mKeyData, "").toUpperCase());

            findViewById(R.id.directions).setVisibility(View.GONE);
            findViewById(R.id.info).setVisibility(View.VISIBLE);
            findViewById(R.id.add).setVisibility(View.VISIBLE);

        } else {
            new AlertDialog.Builder(this).setMessage(R.string.card_keys_not_supported)
                    .setPositiveButton(android.R.string.ok, null).show();
        }
    }
}