Creating a sensor plugin¶
How a Sensor Plugin is Loaded¶
Since sensor backends are created on demand, the sensor plugin is loaded and asked to register the sensor backends it handles. The plugin should implement
registerSensors() and call
registerBackend() to register available backends. Typically the plugin will also inherit from
QSensorBackendFactory and implement
createBackend() in order to instantiate backends it has registered.
The simplest plugin will have just once sensor backend although there is no reason that multiple sensor backends cannot be in a plugin.
An example follows.
class MyPluginClass(QObject, QSensorPluginInterface, QSensorBackendFactory): Q_OBJECT #Q_PLUGIN_METADATA(IID "com.qt-project.Qt.QSensorPluginInterface/1.0" FILE "plugin.json") Q_INTERFACES(QSensorPluginInterface) # public def registerSensors(): QSensorManager.registerBackend(QAccelerometer.sensorType, MyBackend.id, self) createBackend = QSensorBackend(QSensor sensor) if (sensor.identifier() == MyBackend.id) def MyBackend(sensor): return 0
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