123 lines
4.4 KiB
Java
123 lines
4.4 KiB
Java
/*
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* Copyright (C) 2013-2014 Dominik Schürmann <dominik@dominikschuermann.de>
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* Copyright (C) 2013 Bahtiar 'kalkin' Gadimov
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.sufficientlysecure.keychain.ui;
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import org.sufficientlysecure.keychain.Constants;
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import org.sufficientlysecure.keychain.R;
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import org.sufficientlysecure.keychain.provider.ProviderHelper;
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import android.annotation.TargetApi;
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import android.database.Cursor;
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import android.net.Uri;
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import android.nfc.NdefMessage;
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import android.nfc.NdefRecord;
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import android.nfc.NfcAdapter;
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import android.nfc.NfcAdapter.CreateNdefMessageCallback;
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import android.nfc.NfcAdapter.OnNdefPushCompleteCallback;
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import android.nfc.NfcEvent;
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import android.os.Build;
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import android.os.Bundle;
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import android.os.Handler;
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import android.os.Message;
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import android.support.v4.app.LoaderManager;
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import android.widget.Toast;
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@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
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public class ViewKeyActivityJB extends ViewKeyActivity implements CreateNdefMessageCallback,
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OnNdefPushCompleteCallback, LoaderManager.LoaderCallbacks<Cursor> {
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// NFC
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private NfcAdapter mNfcAdapter;
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private byte[] mSharedKeyringBytes;
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private static final int NFC_SENT = 1;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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initNfc(mDataUri);
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}
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/**
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* NFC: Initialize NFC sharing if OS and device supports it
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*/
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private void initNfc(Uri dataUri) {
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// check if NFC Beam is supported (>= Android 4.1)
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
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// Check for available NFC Adapter
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mNfcAdapter = NfcAdapter.getDefaultAdapter(this);
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if (mNfcAdapter != null) {
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// init nfc
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// get public keyring as byte array
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long masterKeyId = ProviderHelper.getMasterKeyId(this, dataUri);
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mSharedKeyringBytes = ProviderHelper.getKeyRingsAsByteArray(this, dataUri,
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new long[] { masterKeyId });
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// Register callback to set NDEF message
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mNfcAdapter.setNdefPushMessageCallback(this, this);
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// Register callback to listen for message-sent success
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mNfcAdapter.setOnNdefPushCompleteCallback(this, this);
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}
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}
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}
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/**
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* NFC: Implementation for the CreateNdefMessageCallback interface
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*/
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@Override
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public NdefMessage createNdefMessage(NfcEvent event) {
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/**
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* When a device receives a push with an AAR in it, the application specified in the AAR is
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* guaranteed to run. The AAR overrides the tag dispatch system. You can add it back in to
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* guarantee that this activity starts when receiving a beamed message. For now, this code
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* uses the tag dispatch system.
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*/
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NdefMessage msg = new NdefMessage(NdefRecord.createMime(Constants.NFC_MIME,
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mSharedKeyringBytes), NdefRecord.createApplicationRecord(Constants.PACKAGE_NAME));
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return msg;
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}
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/**
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* NFC: Implementation for the OnNdefPushCompleteCallback interface
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*/
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@Override
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public void onNdefPushComplete(NfcEvent arg0) {
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// A handler is needed to send messages to the activity when this
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// callback occurs, because it happens from a binder thread
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mNfcHandler.obtainMessage(NFC_SENT).sendToTarget();
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}
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/**
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* NFC: This handler receives a message from onNdefPushComplete
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*/
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private final Handler mNfcHandler = new Handler() {
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@Override
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public void handleMessage(Message msg) {
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switch (msg.what) {
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case NFC_SENT:
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Toast.makeText(getApplicationContext(), R.string.nfc_successfull, Toast.LENGTH_LONG)
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.show();
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break;
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}
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}
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};
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}
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