diff options
| -rw-r--r-- | examples/bluetooth/btchat/doc/src/btchat.qdoc | 28 | ||||
| -rw-r--r-- | examples/bluetooth/btchat/remoteselector.cpp | 7 |
2 files changed, 34 insertions, 1 deletions
diff --git a/examples/bluetooth/btchat/doc/src/btchat.qdoc b/examples/bluetooth/btchat/doc/src/btchat.qdoc index 7469a5af..aa0b189b 100644 --- a/examples/bluetooth/btchat/doc/src/btchat.qdoc +++ b/examples/bluetooth/btchat/doc/src/btchat.qdoc @@ -97,6 +97,34 @@ \snippet btchat/chatserver.cpp stopServer + \section1 Service Discovery + + Before connecting to the server, the client needs to scan the nearby + devices and search for the device that is advertising the chat service. + This is done by the \c RemoteSelector class. + + To start service lookup, the \c RemoteSelector creates an instance of + \l QBluetoothServiceDiscoveryAgent and connects to its signals. + + \snippet btchat/remoteselector.cpp createDiscoveryAgent + + An UUID filter is set, so that the service discovery only shows the devices + that advertise the needed service. After that a + \l {QBluetoothServiceDiscoveryAgent::}{FullDiscovery} is started: + + \snippet btchat/remoteselector.cpp startDiscovery + + When a matching service is discovered, a + \l {QBluetoothServiceDiscoveryAgent::}{serviceDiscovered()} signal is + emitted with an instance of \l QBluetoothServiceInfo as a parameter. This + service info is used to extract the device name and the service name, + and add a new entry to the list of discovered remote devices: + + \snippet btchat/remoteselector.cpp serviceDiscovered + + Later the user can select one of the devices from the list and try to + connect to it. + \section1 Chat Client The chat client is implemented by the \c ChatClient class. diff --git a/examples/bluetooth/btchat/remoteselector.cpp b/examples/bluetooth/btchat/remoteselector.cpp index a7a9a00e..7ab496bd 100644 --- a/examples/bluetooth/btchat/remoteselector.cpp +++ b/examples/bluetooth/btchat/remoteselector.cpp @@ -19,6 +19,7 @@ RemoteSelector::RemoteSelector(const QBluetoothAddress &localAdapter, QWidget *p setWindowState(Qt::WindowMaximized); #endif +//! [createDiscoveryAgent] m_discoveryAgent = new QBluetoothServiceDiscoveryAgent(localAdapter); connect(m_discoveryAgent, &QBluetoothServiceDiscoveryAgent::serviceDiscovered, @@ -27,6 +28,7 @@ RemoteSelector::RemoteSelector(const QBluetoothAddress &localAdapter, QWidget *p this, &RemoteSelector::discoveryFinished); connect(m_discoveryAgent, &QBluetoothServiceDiscoveryAgent::canceled, this, &RemoteSelector::discoveryFinished); +//! [createDiscoveryAgent] } RemoteSelector::~RemoteSelector() @@ -43,9 +45,10 @@ void RemoteSelector::startDiscovery(const QBluetoothUuid &uuid) ui->remoteDevices->clear(); +//! [startDiscovery] m_discoveryAgent->setUuidFilter(uuid); m_discoveryAgent->start(QBluetoothServiceDiscoveryAgent::FullDiscovery); - +//! [startDiscovery] } void RemoteSelector::stopDiscovery() @@ -80,6 +83,7 @@ void RemoteSelector::serviceDiscovered(const QBluetoothServiceInfo &serviceInfo) return; } +//! [serviceDiscovered] QString remoteName; if (serviceInfo.device().name().isEmpty()) remoteName = address.toString(); @@ -92,6 +96,7 @@ void RemoteSelector::serviceDiscovered(const QBluetoothServiceInfo &serviceInfo) m_discoveredServices.insert(item, serviceInfo); ui->remoteDevices->addItem(item); +//! [serviceDiscovered] } void RemoteSelector::discoveryFinished() |