Qt Sensors - SensorGesture QML Type example ¶

概述 ¶

To write a QML application that will use the gesture plugin, following steps are needed:

Import the QtSensors 5.x module:

import QtSensors 5.0
											

Add the SensorGesture QML type into your qml file.

SensorGesture {
    id: sensorGesture
    enabled: false
    onDetected: {
        if (gesture !== oldGesture)
            count = 0;
        valueText.text = gesture + " " + count;
        oldGesture = gesture;
        count++;
    }
    onEnabledChanged: {
        valueText.text = ""
    }
}
											

每 SensorGesture QML type contains a property called gestures. This example uses an alias gestureId for this property.

property alias gestureId: sensorGesture.gestures
											

Then, the gesture or gestures to use can be specified using the alias:

onSelectedGestureChanged: {
    gesture.enabled = false;
    gesture.gestureId = gestureList.selectedGesture;
    ...
}
											

A list of all available gestures is accessible through the availableGestures 特性：

ListView {
    id: gestureList
    model: gesture.availableGestures
    ...
}
											

另请参阅

Qt Sensors - ShakeIt QML Example Qt Sensor Gestures

范例工程 @ code.qt.io