qt实现调用蓝牙

#include "widget.h" #include "ui_widget.h" #include "QMessageBox" static const QLatin1String serviceUuid("00001101-0000-1000-8000-00805F9B34FB"); Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget) { ui->setupUi(this); discoveryAgent = new QBluetoothDeviceDiscoveryAgent(); localDevice = new QBluetoothLocalDevice(); socket = new QBluetoothSocket(QBluetoothServiceInfo::RfcommProtocol); connect(discoveryAgent, SIGNAL(deviceDiscovered(QBluetoothDeviceInfo)), this, SLOT(addBlueToothDevicesToList(QBluetoothDeviceInfo)) ); connect(ui->list, SIGNAL(itemActivated(QListWidgetItem*)), this, SLOT(itemActivated(QListWidgetItem*)) ); connect(socket, SIGNAL(readyRead()), this, SLOT(readBluetoothDataEvent()) ); connect(socket, SIGNAL(connected()), this, SLOT(bluetoothConnectedEvent()) ); connect(socket, SIGNAL(disconnected()), this, SLOT(bluetoothDisconnectedEvent()) ); if( localDevice->hostMode() == QBluetoothLocalDevice::HostPoweredOff ) { ui->pushButton_openBluetooth->setEnabled(true); ui->pushButton_closeDevice->setEnabled(false); }else { ui->pushButton_openBluetooth->setEnabled(false); ui->pushButton_closeDevice->setEnabled(true); } if( localDevice->hostMode() == QBluetoothLocalDevice::HostDiscoverable ) { ui->checkBox_discoverable->setChecked(true); }else { ui->checkBox_discoverable->setChecked(false); } } Widget::~Widget() { delete ui; } void Widget::on_pushButton_scan_clicked() { discoveryAgent->start(); ui->pushButton_scan->setEnabled(false); } void Widget::addBlueToothDevicesToList( const QBluetoothDeviceInfo &info ) { QString label = QString("%1 %2").arg(info.address().toString()).arg(info.name()); QList<QListWidgetItem *> items = ui->list->findItems(label, Qt::MatchExactly); if (items.empty()) { QListWidgetItem *item = new QListWidgetItem(label); QBluetoothLocalDevice::Pairing pairingStatus = localDevice->pairingStatus(info.address()); if (pairingStatus == QBluetoothLocalDevice::Paired || pairingStatus == QBluetoothLocalDevice::AuthorizedPaired ) item->setTextColor(QColor(Qt::green)); else item->setTextColor(QColor(Qt::black)); ui->list->addItem(item); } } void Widget::on_pushButton_openBluetooth_clicked() { localDevice->powerOn(); ui->pushButton_closeDevice->setEnabled(true); ui->pushButton_openBluetooth->setEnabled(false); ui->pushButton_scan->setEnabled(true); } void Widget::on_pushButton_closeDevice_clicked() { localDevice->setHostMode(QBluetoothLocalDevice::HostPoweredOff); ui->pushButton_closeDevice->setEnabled(false); ui->pushButton_openBluetooth->setEnabled(true); ui->pushButton_scan->setEnabled(false); } void Widget::itemActivated(QListWidgetItem *item) { QString text = item->text(); int index = text.indexOf(' '); if (index == -1) return; QBluetoothAddress address(text.left(index)); QString name(text.mid(index + 1)); qDebug() << "You has choice the bluetooth address is " << address; qDebug() << "The device is connneting.... "; QMessageBox::information(this,tr("Info"),tr("The device is connecting...")); socket->connectToService(address, QBluetoothUuid(serviceUuid) ,QIODevice::ReadWrite); } void Widget::readBluetoothDataEvent() { QByteArray line = socket->readAll(); QString strData = line.toHex(); comStr.append(strData); qDebug() <<"rec data is: "<< comStr; qDebug() <<"The comStr length is: " << comStr.length(); if(comStr.length() >= 30) { ui->textBrowser_info->append(comStr + "\n"); comStr.clear(); } } void Widget::bluetoothConnectedEvent() { qDebug() << "The android device has been connected successfully!"; QMessageBox::information(this,tr("Info"),tr("successful connection!")); } void Widget::bluetoothDisconnectedEvent() { qDebug() << "The android device has been disconnected successfully!"; QMessageBox::information(this,tr("Info"),tr("successful disconnection!")); } void Widget::on_pushButton_disconnect_clicked() { socket->disconnectFromService(); } void Widget::on_pushButton_send_clicked() { QByteArray arrayData; QString s("Hello Windows!!!\nThis message is sended via bluetooth of android device!\n"); arrayData = s.toUtf8(); socket->write(arrayData); } void Widget::on_pushButton_clear_clicked() { ui->textBrowser_info->clear(); }