Qt Sensors C++ 概述

// On the heap (deleted when this object is deleted)
QAccelerometer *sensor = new QAccelerometer(this);

// On the stack (deleted when the current scope ends)
QOrientationSensor orient_sensor;

// start the sensor
QSensor sensor("QAccelerometer");
sensor.start();

// later
QSensorReading *reading = sensor.reading();
qreal x = reading->property("x").value<qreal>();
qreal y = reading->value(1).value<qreal>();

QList<QSensor*>mySensorList;for(constQByteArray&type： QSensor::sensorTypes()) {    qDebug() << "Found a sensor type:" << type;
   为(constQByteArray&identifier： QSensor::sensorsForType(type)) {        qDebug() << "    " << "Found a sensor of that type:" << identifier;
        QSensor* 传感器= newQSensor(type, this); sensor->setIdentifier(identifier); mySensorList.append(sensor); } }

for(QSensor* 传感器 : mySensorList) {const intfirstProperty=QSensorReadingif(!sensor->connectToBackend()) continue；    qDebug() << "Sensor" << sensor->identifier() << "reading properties:";
    QSensorReading*reading =  sensor->reading();if(reading) {constQMetaObject*mo =  reading->metaObject();for(inti=firstProperty; i<  mo->propertyCount();++i) { QByteArrayname=  mo->property(i).name()；            qDebug() << "    " << name << reading->property(name).toByteArray();
        } }