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QBluetoothServiceDiscoveryAgent ClassThe QBluetoothServiceDiscoveryAgent class enables you to query for Bluetooth services. More... #include <QBluetoothServiceDiscoveryAgent>Inherits: QObject. Public Types
Public Functions
Public Slots
Signals
Additional Inherited Members
Detailed DescriptionThe QBluetoothServiceDiscoveryAgent class enables you to query for Bluetooth services. To query the services provided by all contactable Bluetooth devices:
By default a minimal service discovery is performed. In this mode, the QBluetotohServiceInfo objects returned are guaranteed to contain only device and service UUID information. Depending on platform and device capabilities, other service information may also be available. For most use cases this is adequate as QBluetoothSocket::connectToService() will perform additional discovery if required. If full service information is required, pass FullDiscovery as the discoveryMode parameter to start(). Member Type Documentation
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| Constant | Value | Description |
|---|---|---|
| QBluetoothServiceDiscoveryAgent::MinimalDiscovery | 0 | Performs a minimal service discovery. The QBluetoothServiceInfo objects returned may be incomplete and are only guaranteed to contain device and service UUID information. |
| QBluetoothServiceDiscoveryAgent::FullDiscovery | 1 | Performs a full service discovery. |
enum QBluetoothServiceDiscoveryAgent::Error
This enum describes errors that can occur during service discovery.
| Constant | Value | Description |
|---|---|---|
| QBluetoothServiceDiscoveryAgent::NoError | 0 | No error. |
| QBluetoothServiceDiscoveryAgent::DeviceDiscoveryError | 1 | Error occurred during device discovery. |
| QBluetoothServiceDiscoveryAgent::UnknownError | 100 | An unidentified error occurred. |
Member Function Documentation
QBluetoothServiceDiscoveryAgent::QBluetoothServiceDiscoveryAgent(QObject * parent = 0)
Constructs a new QBluetoothServiceDiscoveryAgent with parent. Services will be discovered on all contactable devices.
QBluetoothServiceDiscoveryAgent::QBluetoothServiceDiscoveryAgent(const QBluetoothAddress & remoteAddress, QObject * parent = 0)
Constructs a new QBluetoothServiceDiscoveryAgent for remoteAddress and with parent.
If remoteAddress is null, services will be discovred on all contactable Bluetooth devices.
QBluetoothServiceDiscoveryAgent::~QBluetoothServiceDiscoveryAgent()
Destructor for QBluetoothServiceDiscoveryAgent
void QBluetoothServiceDiscoveryAgent::canceled() [signal]
Signals the cancellation of the service discovery.
void QBluetoothServiceDiscoveryAgent::clear() [slot]
Clears the results of a previous service discovery.
QList<QBluetoothServiceInfo> QBluetoothServiceDiscoveryAgent::discoveredServices() const
Returns the list of all discovered services.
Error QBluetoothServiceDiscoveryAgent::error() const
Returns the type of error that last occurred. If service discovery is done on a signle address it will return errors that occured while trying to discover services on that device. If the alternate constructor is used and devices are discovered by a scan, errors during service discovery on individual devices are not saved and no signals are emitted. In this case, errors are fairly normal as some devices may not respond to discovery or may no longer be in range. Such errors are surpressed. If no services are returned, it can be assumed no services could be discovered.
void QBluetoothServiceDiscoveryAgent::error(QBluetoothServiceDiscoveryAgent::Error error) [signal]
This signal is emitted when an error occurs. The error parameter describes the error that occurred.
QString QBluetoothServiceDiscoveryAgent::errorString() const
Returns a human-readable description of the last error that occurred during service discovery on a single device.
void QBluetoothServiceDiscoveryAgent::finished() [signal]
This signal is emitted when Bluetooth service discovery completes.
bool QBluetoothServiceDiscoveryAgent::isActive() const
Returns true if service discovery is currently active, otherwise returns false.
void QBluetoothServiceDiscoveryAgent::serviceDiscovered(const QBluetoothServiceInfo & info) [signal]
This signal is emitted when the Bluetooth service described by info is discovered.
void QBluetoothServiceDiscoveryAgent::setUuidFilter(const QList<QBluetoothUuid> & uuids)
Sets the UUID filter to uuids. Only services matching the UUIDs in uuids will be returned.
An empty UUID list is equivalent to a list containing only QBluetoothUuid::PublicBrowseGroup.
See also uuidFilter().
void QBluetoothServiceDiscoveryAgent::setUuidFilter(const QBluetoothUuid & uuid)
This is an overloaded member function, provided for convenience.
Sets the UUID filter to a list containing the single element uuid.
See also uuidFilter().
void QBluetoothServiceDiscoveryAgent::start(DiscoveryMode mode = MinimalDiscovery) [slot]
Starts service discovery. mode specifies the type of service discovery to perform.
See also DiscoveryMode.
void QBluetoothServiceDiscoveryAgent::stop() [slot]
Stops service discovery.
QList<QBluetoothUuid> QBluetoothServiceDiscoveryAgent::uuidFilter() const
Returns the UUID filter.
See also setUuidFilter().