Esempio n. 1
0
DeviceDiscoveryDialog::DeviceDiscoveryDialog(QWidget *parent)
:   QDialog(parent), discoveryAgent(new QBluetoothDeviceDiscoveryAgent),
    localDevice(new QBluetoothLocalDevice),
    ui(new Ui_DeviceDiscovery)
{
    ui->setupUi(this);

#if defined (Q_OS_SYMBIAN) || defined(Q_OS_WINCE) || defined(Q_WS_MAEMO_5) || defined(Q_WS_MAEMO_6)
    setWindowState(Qt::WindowFullScreen);
#endif

    connect(ui->inquiryType, SIGNAL(toggled(bool)), this, SLOT(setGeneralUnlimited(bool)));
    connect(ui->scan, SIGNAL(clicked()), this, SLOT(startScan()));

    connect(discoveryAgent, SIGNAL(deviceDiscovered(const QBluetoothDeviceInfo&)),
            this, SLOT(addDevice(const QBluetoothDeviceInfo&)));
    connect(discoveryAgent, SIGNAL(finished()), this, SLOT(scanFinished()));

    connect(ui->list, SIGNAL(itemActivated(QListWidgetItem*)),
            this, SLOT(itemActivated(QListWidgetItem*)));

    connect(localDevice, SIGNAL(hostModeStateChanged(QBluetoothLocalDevice::HostMode)),
            this, SLOT(hostModeStateChanged(QBluetoothLocalDevice::HostMode)));

    hostModeStateChanged(localDevice->hostMode());
    // add context menu for devices to be able to pair device
    ui->list->setContextMenuPolicy(Qt::CustomContextMenu);
    connect(ui->list, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(displayPairingMenu(QPoint)));
    connect(localDevice, SIGNAL(pairingFinished(const QBluetoothAddress&, QBluetoothLocalDevice::Pairing))
        , this, SLOT(pairingDone(const QBluetoothAddress&, QBluetoothLocalDevice::Pairing)));

}
Esempio n. 2
0
BtLocalDevice::BtLocalDevice(QObject *parent) :
    QObject(parent), securityFlags(QBluetooth::NoSecurity)
{
    localDevice = new QBluetoothLocalDevice(this);
    connect(localDevice, SIGNAL(error(QBluetoothLocalDevice::Error)),
            this, SIGNAL(error(QBluetoothLocalDevice::Error)));
    connect(localDevice, SIGNAL(hostModeStateChanged(QBluetoothLocalDevice::HostMode)),
            this, SIGNAL(hostModeStateChanged()));
    connect(localDevice, SIGNAL(pairingFinished(QBluetoothAddress,QBluetoothLocalDevice::Pairing)),
            this, SLOT(pairingFinished(QBluetoothAddress,QBluetoothLocalDevice::Pairing)));
    connect(localDevice, SIGNAL(deviceConnected(QBluetoothAddress)),
            this, SLOT(connected(QBluetoothAddress)));
    connect(localDevice, SIGNAL(deviceDisconnected(QBluetoothAddress)),
            this, SLOT(disconnected(QBluetoothAddress)));
    connect(localDevice, SIGNAL(pairingDisplayConfirmation(QBluetoothAddress,QString)),
            this, SLOT(pairingDisplayConfirmation(QBluetoothAddress,QString)));

    if (localDevice->isValid()) {
        deviceAgent = new QBluetoothDeviceDiscoveryAgent(this);
        connect(deviceAgent, SIGNAL(deviceDiscovered(QBluetoothDeviceInfo)),
                this, SLOT(deviceDiscovered(QBluetoothDeviceInfo)));
        connect(deviceAgent, SIGNAL(finished()),
                this, SLOT(discoveryFinished()));
        connect(deviceAgent, SIGNAL(error(QBluetoothDeviceDiscoveryAgent::Error)),
                this, SLOT(discoveryError(QBluetoothDeviceDiscoveryAgent::Error)));
        connect(deviceAgent, SIGNAL(canceled()),
                this, SLOT(discoveryCanceled()));

        serviceAgent = new QBluetoothServiceDiscoveryAgent(this);
        connect(serviceAgent, SIGNAL(serviceDiscovered(QBluetoothServiceInfo)),
                this, SLOT(serviceDiscovered(QBluetoothServiceInfo)));
        connect(serviceAgent, SIGNAL(finished()),
                this, SLOT(serviceDiscoveryFinished()));
        connect(serviceAgent, SIGNAL(canceled()),
                this, SLOT(serviceDiscoveryCanceled()));
        connect(serviceAgent, SIGNAL(error(QBluetoothServiceDiscoveryAgent::Error)),
                this, SLOT(serviceDiscoveryError(QBluetoothServiceDiscoveryAgent::Error)));

        socket = new QBluetoothSocket(SOCKET_PROTOCOL, this);
        connect(socket, SIGNAL(stateChanged(QBluetoothSocket::SocketState)),
                this, SLOT(socketStateChanged(QBluetoothSocket::SocketState)));
        connect(socket, SIGNAL(error(QBluetoothSocket::SocketError)),
                this, SLOT(socketError(QBluetoothSocket::SocketError)));
        connect(socket, SIGNAL(connected()), this, SLOT(socketConnected()));
        connect(socket, SIGNAL(disconnected()), this, SLOT(socketDisconnected()));
        connect(socket, SIGNAL(readyRead()), this, SLOT(readData()));
        setSecFlags(socket->preferredSecurityFlags());

        server = new QBluetoothServer(SOCKET_PROTOCOL, this);
        connect(server, SIGNAL(newConnection()), this, SLOT(serverNewConnection()));
        connect(server, SIGNAL(error(QBluetoothServer::Error)),
                this, SLOT(serverError(QBluetoothServer::Error)));
    } else {
        deviceAgent = 0;
        serviceAgent = 0;
        socket = 0;
        server = 0;
    }
}
void tst_QBluetoothLocalDevice::tst_hostModes()
{
    QFETCH(QBluetoothLocalDevice::HostMode, hostModeExpected);

    QBluetoothLocalDevice localDevice;
    QSignalSpy hostModeSpy(&localDevice, SIGNAL(hostModeStateChanged(QBluetoothLocalDevice::HostMode)));
    // there should be no changes yet
    QVERIFY(hostModeSpy.isEmpty());

    QTest::qWait(1000);

    localDevice.setHostMode(hostModeExpected);
    // wait for the device to switch bluetooth mode.
    QTest::qWait(1000);
    if (hostModeExpected != localDevice.hostMode()) {
        WAIT_FOR_CONDITION(hostModeSpy.count(),1);
        QVERIFY(hostModeSpy.count() > 0);
    }
    // test the actual signal values.
    QList<QVariant> arguments = hostModeSpy.takeFirst();
    QBluetoothLocalDevice::HostMode hostMode = qvariant_cast<QBluetoothLocalDevice::HostMode>(arguments.at(0));
    QCOMPARE(hostModeExpected, hostMode);
    // test actual
    QCOMPARE(hostModeExpected, localDevice.hostMode());
}
void tst_QBluetoothLocalDevice::tst_powerOff()
{
    if (!QBluetoothLocalDevice::allDevices().count())
        QSKIP("Skipping test due to missing Bluetooth device");

    {
        QBluetoothLocalDevice *device = new QBluetoothLocalDevice();
        device->powerOn();
        delete device;
        // wait for the device to switch bluetooth mode.
        QTest::qWait(1000);
    }
    QBluetoothLocalDevice localDevice;
    QSignalSpy hostModeSpy(&localDevice, SIGNAL(hostModeStateChanged(QBluetoothLocalDevice::HostMode)));
    // there should be no changes yet
    QVERIFY(hostModeSpy.isValid());
    QVERIFY(hostModeSpy.isEmpty());

    localDevice.setHostMode(QBluetoothLocalDevice::HostPoweredOff);
    // async, wait for it
    QTRY_VERIFY(hostModeSpy.count() > 0);
    // we should not be powered off
    QVERIFY(localDevice.hostMode() == QBluetoothLocalDevice::HostPoweredOff);

}
Esempio n. 5
0
bool RfCommClient::powerOn()
{
    qDebug() << __PRETTY_FUNCTION__ << ">>";
    // turn on BT in case it is not on
    if (localDevice.hostMode() == QBluetoothLocalDevice::HostPoweredOff) {
        connect(&localDevice, SIGNAL(hostModeStateChanged(QBluetoothLocalDevice::HostMode)),
                this, SLOT(hostModeStateChanged(QBluetoothLocalDevice::HostMode)));
//        connect(localDevice, SIGNAL(hostModeStateChanged(QBluetoothLocalDevice::HostMode)),
//                this, SLOT(hostModeStateChanged(QBluetoothLocalDevice::HostMode)));
        qDebug() << __PRETTY_FUNCTION__ << "Turning power on";
        localDevice.powerOn();
    } else {
        qDebug() << __PRETTY_FUNCTION__ << "<< Power already on! returning true";
        return true;
    }
    qDebug() << __PRETTY_FUNCTION__ << "<< returning false";
    return false;
}
DeviceDiscoveryDialog::DeviceDiscoveryDialog(QWidget *parent)
:   QDialog(parent), localDevice(new QBluetoothLocalDevice),
    ui(new Ui_DeviceDiscovery)
{
    ui->setupUi(this);

    /*
     * In case of multiple Bluetooth adapters it is possible to set adapter
     * which will be used. Example code:
     *
     * QBluetoothAddress address("XX:XX:XX:XX:XX:XX");
     * discoveryAgent = new QBluetoothDeviceDiscoveryAgent(address);
     *
     **/

    discoveryAgent = new QBluetoothDeviceDiscoveryAgent();

    connect(ui->inquiryType, SIGNAL(toggled(bool)), this, SLOT(setGeneralUnlimited(bool)));
    connect(ui->scan, SIGNAL(clicked()), this, SLOT(startScan()));

    connect(discoveryAgent, SIGNAL(deviceDiscovered(QBluetoothDeviceInfo)),
            this, SLOT(addDevice(QBluetoothDeviceInfo)));
    connect(discoveryAgent, SIGNAL(finished()), this, SLOT(scanFinished()));

    connect(ui->list, SIGNAL(itemActivated(QListWidgetItem*)),
            this, SLOT(itemActivated(QListWidgetItem*)));

    connect(localDevice, SIGNAL(hostModeStateChanged(QBluetoothLocalDevice::HostMode)),
            this, SLOT(hostModeStateChanged(QBluetoothLocalDevice::HostMode)));

    hostModeStateChanged(localDevice->hostMode());
    // add context menu for devices to be able to pair device
    ui->list->setContextMenuPolicy(Qt::CustomContextMenu);
    connect(ui->list, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(displayPairingMenu(QPoint)));
    connect(localDevice, SIGNAL(pairingFinished(QBluetoothAddress,QBluetoothLocalDevice::Pairing))
        , this, SLOT(pairingDone(QBluetoothAddress,QBluetoothLocalDevice::Pairing)));

}
void tst_QBluetoothLocalDevice::tst_powerOn()
{
    {
    QBluetoothLocalDevice localDevice;

    QSignalSpy hostModeSpy(&localDevice, SIGNAL(hostModeStateChanged(QBluetoothLocalDevice::HostMode)));
    // there should be no changes yet
    QVERIFY(hostModeSpy.isEmpty());

    localDevice.powerOn();
    // async, wait for it
    WAIT_FOR_CONDITION(hostModeSpy.count(),1);
    QVERIFY(hostModeSpy.count() > 0);
    QBluetoothLocalDevice::HostMode hostMode= localDevice.hostMode();
    // we should not be powered off
    QVERIFY(hostMode == QBluetoothLocalDevice::HostConnectable
         || hostMode == QBluetoothLocalDevice::HostDiscoverable);
    }

}
void tst_QBluetoothLocalDevice::tst_powerOn()
{
    QBluetoothLocalDevice localDevice;

    QSignalSpy hostModeSpy(&localDevice, SIGNAL(hostModeStateChanged(QBluetoothLocalDevice::HostMode)));
    // there should be no changes yet
    QVERIFY(hostModeSpy.isValid());
    QVERIFY(hostModeSpy.isEmpty());

    if (!QBluetoothLocalDevice::allDevices().count())
        QSKIP("Skipping test due to missing Bluetooth device");

    localDevice.powerOn();
    // async, wait for it
    QTRY_VERIFY(hostModeSpy.count() > 0);
    QBluetoothLocalDevice::HostMode hostMode= localDevice.hostMode();
    // we should not be powered off
    QVERIFY(hostMode == QBluetoothLocalDevice::HostConnectable
         || hostMode == QBluetoothLocalDevice::HostDiscoverable);
}
void tst_QBluetoothLocalDevice::tst_powerOff()
{
    {
        QBluetoothLocalDevice *device = new QBluetoothLocalDevice();
        device->powerOn();
        delete device;
        // wait for the device to switch bluetooth mode.
        QTest::qWait(1000);
    }
    QBluetoothLocalDevice localDevice;
    QSignalSpy hostModeSpy(&localDevice, SIGNAL(hostModeStateChanged(QBluetoothLocalDevice::HostMode)));
    // there should be no changes yet
    QVERIFY(hostModeSpy.isEmpty());

    localDevice.setHostMode(QBluetoothLocalDevice::HostPoweredOff);
    // async, wait for it
    WAIT_FOR_CONDITION(hostModeSpy.count(),1);
    QVERIFY(hostModeSpy.count() > 0);
    // we should not be powered off
    QVERIFY(localDevice.hostMode() == QBluetoothLocalDevice::HostPoweredOff);

}
void tst_QBluetoothDeviceDiscoveryAgent::initTestCase()
{
    qRegisterMetaType<QBluetoothDeviceInfo>("QBluetoothDeviceInfo");
    qRegisterMetaType<QBluetoothDeviceDiscoveryAgent::InquiryType>("QBluetoothDeviceDiscoveryAgent::InquiryType");

    // turn on BT in case it is not on
    QBluetoothLocalDevice *device = new QBluetoothLocalDevice();
    if (device->hostMode() == QBluetoothLocalDevice::HostPoweredOff) {
        QSignalSpy hostModeSpy(device, SIGNAL(hostModeStateChanged(QBluetoothLocalDevice::HostMode)));
        QVERIFY(hostModeSpy.isEmpty());
        device->powerOn();
        int connectTime = 5000;  // ms
        while (hostModeSpy.count() < 1 && connectTime > 0) {
            QTest::qWait(500);
            connectTime -= 500;
        }
        QVERIFY(hostModeSpy.count() > 0);
    }
    QBluetoothLocalDevice::HostMode hostMode= device->hostMode();
    QVERIFY(hostMode == QBluetoothLocalDevice::HostConnectable
         || hostMode == QBluetoothLocalDevice::HostDiscoverable
         || hostMode == QBluetoothLocalDevice::HostDiscoverableLimitedInquiry);
    delete device;
}
void QBluetoothServiceDiscoveryAgentPrivate::start(const QBluetoothAddress &address)
{
    Q_Q(QBluetoothServiceDiscoveryAgent);

    if (!btAdapter.isValid()) {
        error = QBluetoothServiceDiscoveryAgent::UnknownError;
        errorString = QBluetoothServiceDiscoveryAgent::tr("Platform does not support Bluetooth");

        //abort any outstanding discoveries
        discoveredDevices.clear();
        emit q->error(error);
        _q_serviceDiscoveryFinished();

        return;
    }

    /* SDP discovery was officially added by Android API v15
     * BluetoothDevice.getUuids() existed in earlier APIs already and in the future we may use
     * reflection to support earlier Android versions than 15. Unfortunately
     * BluetoothDevice.fetchUuidsWithSdp() and related APIs had some structure changes
     * over time. Therefore we won't attempt this with reflection.
     *
     * TODO: Use reflection to support getUuuids() where possible.
     * */
    if (QtAndroidPrivate::androidSdkVersion() < 15) {
        qCWarning(QT_BT_ANDROID) << "Aborting SDP enquiry due to too low Android API version (requires v15+)";

        error = QBluetoothServiceDiscoveryAgent::UnknownError;
        errorString = QBluetoothServiceDiscoveryAgent::tr("Android API below v15 does not support SDP discovery");

        //abort any outstanding discoveries
        sdpCache.clear();
        discoveredDevices.clear();
        emit q->error(error);
        _q_serviceDiscoveryFinished();

        return;
    }

    QAndroidJniObject inputString = QAndroidJniObject::fromString(address.toString());
    QAndroidJniObject remoteDevice =
            btAdapter.callObjectMethod("getRemoteDevice",
                                               "(Ljava/lang/String;)Landroid/bluetooth/BluetoothDevice;",
                                               inputString.object<jstring>());
    QAndroidJniEnvironment env;
    if (env->ExceptionCheck()) {
        env->ExceptionClear();
        env->ExceptionDescribe();

        //if it was only device then its error -> otherwise go to next device
        if (singleDevice) {
            error = QBluetoothServiceDiscoveryAgent::InputOutputError;
            errorString = QBluetoothServiceDiscoveryAgent::tr("Cannot create Android BluetoothDevice");

            qCWarning(QT_BT_ANDROID) << "Cannot start SDP for" << discoveredDevices.at(0).name()
                                     << "(" << address.toString() << ")";
            emit q->error(error);
        }
        _q_serviceDiscoveryFinished();
        return;
    }


    if (mode == QBluetoothServiceDiscoveryAgent::MinimalDiscovery) {
        qCDebug(QT_BT_ANDROID) << "Minimal discovery on (" << discoveredDevices.at(0).name()
                               << ")" << address.toString() ;

        //Minimal discovery uses BluetoothDevice.getUuids()
        QAndroidJniObject parcelUuidArray = remoteDevice.callObjectMethod(
                    "getUuids", "()[Landroid/os/ParcelUuid;");

        if (!parcelUuidArray.isValid()) {
            if (singleDevice) {
                error = QBluetoothServiceDiscoveryAgent::InputOutputError;
                errorString = QBluetoothServiceDiscoveryAgent::tr("Cannot obtain service uuids");
                emit q->error(error);
            }
            qCWarning(QT_BT_ANDROID) << "Cannot retrieve SDP UUIDs for" << discoveredDevices.at(0).name()
                                     << "(" << address.toString() << ")";
            _q_serviceDiscoveryFinished();
            return;
        }

        const QList<QBluetoothUuid> results = ServiceDiscoveryBroadcastReceiver::convertParcelableArray(parcelUuidArray);
        populateDiscoveredServices(discoveredDevices.at(0), results);

        _q_serviceDiscoveryFinished();
    } else {
        qCDebug(QT_BT_ANDROID) << "Full discovery on (" << discoveredDevices.at(0).name()
                               << ")" << address.toString();

        //Full discovery uses BluetoothDevice.fetchUuidsWithSdp()
        if (!receiver) {
            receiver = new ServiceDiscoveryBroadcastReceiver();
            QObject::connect(receiver, SIGNAL(uuidFetchFinished(QBluetoothAddress,QList<QBluetoothUuid>)),
                    q, SLOT(_q_processFetchedUuids(QBluetoothAddress,QList<QBluetoothUuid>)));
        }

        if (!localDeviceReceiver) {
            localDeviceReceiver = new LocalDeviceBroadcastReceiver();
            QObject::connect(localDeviceReceiver, SIGNAL(hostModeStateChanged(QBluetoothLocalDevice::HostMode)),
                             q, SLOT(_q_hostModeStateChanged(QBluetoothLocalDevice::HostMode)));
        }

        jboolean result = remoteDevice.callMethod<jboolean>("fetchUuidsWithSdp");
        if (!result) {
            //kill receiver to limit load of signals
            receiver->unregisterReceiver();
            receiver->deleteLater();
            receiver = 0;
            qCWarning(QT_BT_ANDROID) << "Cannot start dynamic fetch.";
            _q_serviceDiscoveryFinished();
        }
    }
}
void LocalDeviceBroadcastReceiver::onReceive(JNIEnv *env, jobject context, jobject intent)
{
    Q_UNUSED(context);
    Q_UNUSED(env);

    QAndroidJniObject intentObject(intent);
    const QString action = intentObject.callObjectMethod("getAction", "()Ljava/lang/String;").toString();
    qCDebug(QT_BT_ANDROID) << QStringLiteral("LocalDeviceBroadcastReceiver::onReceive() - event: %1").arg(action);

    if (action == valueForStaticField(JavaNames::BluetoothAdapter,
                                      JavaNames::ActionScanModeChanged).toString()) {

        const QAndroidJniObject extrasBundle =
                intentObject.callObjectMethod("getExtras","()Landroid/os/Bundle;");
        const QAndroidJniObject keyExtra = valueForStaticField(JavaNames::BluetoothAdapter,
                                                               JavaNames::ExtraScanMode);

        int extra = extrasBundle.callMethod<jint>("getInt",
                                                  "(Ljava/lang/String;)I",
                                                  keyExtra.object<jstring>());

        if (previousScanMode != extra) {
            previousScanMode = extra;

            if (extra == hostModePreset[0])
                emit hostModeStateChanged(QBluetoothLocalDevice::HostPoweredOff);
            else if (extra == hostModePreset[1])
                emit hostModeStateChanged(QBluetoothLocalDevice::HostConnectable);
            else if (extra == hostModePreset[2])
                emit hostModeStateChanged(QBluetoothLocalDevice::HostDiscoverable);
            else
                qCWarning(QT_BT_ANDROID) << "Unknown Host State";
        }
    } else if (action == valueForStaticField(JavaNames::BluetoothDevice,
                                             JavaNames::ActionBondStateChanged).toString()) {
        //get BluetoothDevice
        QAndroidJniObject keyExtra = valueForStaticField(JavaNames::BluetoothDevice,
                                                         JavaNames::ExtraDevice);
        const QAndroidJniObject bluetoothDevice =
                intentObject.callObjectMethod("getParcelableExtra",
                                              "(Ljava/lang/String;)Landroid/os/Parcelable;",
                                              keyExtra.object<jstring>());

        //get new bond state
        keyExtra = valueForStaticField(JavaNames::BluetoothDevice, JavaNames::ExtraBondState);
        const QAndroidJniObject extrasBundle =
                intentObject.callObjectMethod("getExtras","()Landroid/os/Bundle;");
        int bondState = extrasBundle.callMethod<jint>("getInt",
                                                      "(Ljava/lang/String;)I",
                                                      keyExtra.object<jstring>());

        QBluetoothAddress address(bluetoothDevice.callObjectMethod<jstring>("getAddress").toString());
        if (address.isNull())
                return;

        if (bondState == bondingModePreset[0])
            emit pairingStateChanged(address, QBluetoothLocalDevice::Unpaired);
        else if (bondState == bondingModePreset[1])
            ; //we ignore this as Qt doesn't have equivalent API value
        else if (bondState == bondingModePreset[2])
            emit pairingStateChanged(address, QBluetoothLocalDevice::Paired);
        else
            qCWarning(QT_BT_ANDROID) << "Unknown BOND_STATE_CHANGED value:" << bondState;

    } else if (action == valueForStaticField(JavaNames::BluetoothDevice,
                                             JavaNames::ActionAclConnected).toString() ||
               action == valueForStaticField(JavaNames::BluetoothDevice,
                                             JavaNames::ActionAclDisconnected).toString()) {

        const QString connectEvent = valueForStaticField(JavaNames::BluetoothDevice,
                                                         JavaNames::ActionAclConnected).toString();
        const bool isConnectEvent =
                action == connectEvent ? true : false;

        //get BluetoothDevice
        const QAndroidJniObject keyExtra = valueForStaticField(JavaNames::BluetoothDevice,
                                                               JavaNames::ExtraDevice);
        QAndroidJniObject bluetoothDevice =
                intentObject.callObjectMethod("getParcelableExtra",
                                              "(Ljava/lang/String;)Landroid/os/Parcelable;",
                                              keyExtra.object<jstring>());

        QBluetoothAddress address(bluetoothDevice.callObjectMethod<jstring>("getAddress").toString());
        if (address.isNull())
            return;

        emit connectDeviceChanges(address, isConnectEvent);
    } else if (action == valueForStaticField(JavaNames::BluetoothDevice,
                                             JavaNames::ActionPairingRequest).toString()) {

        QAndroidJniObject keyExtra = valueForStaticField(JavaNames::BluetoothDevice,
                                                         JavaNames::ExtraPairingVariant);
        int variant = intentObject.callMethod<jint>("getIntExtra",
                                                    "(Ljava/lang/String;I)I",
                                                    keyExtra.object<jstring>(),
                                                    -1);

        int key = -1;
        switch (variant) {
        case -1: //ignore -> no pairing variant set
            return;
        case 2: //BluetoothDevice.PAIRING_VARIANT_PASSKEY_CONFIRMATION
        {
            keyExtra = valueForStaticField(JavaNames::BluetoothDevice,
                                           JavaNames::ExtraPairingKey);
            key = intentObject.callMethod<jint>("getIntExtra",
                                                    "(Ljava/lang/String;I)I",
                                                    keyExtra.object<jstring>(),
                                                    -1);
            if (key == -1)
                return;

            keyExtra = valueForStaticField(JavaNames::BluetoothDevice, JavaNames::ExtraDevice);
            QAndroidJniObject bluetoothDevice =
                    intentObject.callObjectMethod("getParcelableExtra",
                                                  "(Ljava/lang/String;)Landroid/os/Parcelable;",
                                                  keyExtra.object<jstring>());

            //we need to keep a reference around in case the user confirms later on
            pairingDevice = bluetoothDevice;

            QBluetoothAddress address(bluetoothDevice.callObjectMethod<jstring>("getAddress").toString());

            //User has choice to confirm or not. If no confirmation is happening
            //the OS default pairing dialog can be used or timeout occurs.
            emit pairingDisplayConfirmation(address, QString::number(key));
            break;
        }
        default:
            qCWarning(QT_BT_ANDROID) << "Unknown pairing variant: " << variant;
            return;
        }
    }
}