public abstract class MotionSensorManager

Cross platform access to the device motion sensors (accelerometer, gyroscope, magnetometer and the derived gravity, linear acceleration and orientation) together with high level gesture detection (shake, flip, tilt, pick up and free fall).

Obtain the singleton through getInstance(). The instance is always non null; on a device or port without motion sensors every sensor simply reports as unsupported and no events are delivered.

Reading a sensor

MotionSensorManager m = MotionSensorManager.getInstance();
MotionSensor accel = m.getSensor(MotionSensorManager.TYPE_ACCELEROMETER);
if (accel != null) {
    accel.addListener(new MotionSensorListener() {
        public void motionReceived(MotionEvent evt) {
            // evt.getX(), evt.getY(), evt.getZ() are in m/s^2
        }
    });
}

Listening for a gesture

MotionSensorManager.getInstance().addGestureListener(GestureEvent.TYPE_SHAKE, new GestureListener() {
    public void gestureDetected(GestureEvent evt) {
        Dialog.show("Shaken", "You shook the device", "OK", null);
    }
});

All callbacks are delivered on the EDT. Sampling is reference counted so the hardware sensors are only powered while at least one listener (sensor or gesture) is registered; remember to remove your listeners to save battery.

iOS note: access to the motion hardware requires the build argument ios.NSMotionUsageDescription describing why the app reads motion data.