/** Disable orientation updates */
public void disableCompass() {
if (mSensorListener != null) {
mSensorListener.stopListening();
}
// Reset values
mSensorListener = null;
mAzimuth = Float.NaN;
// Update the screen to see changes take effect
if (mMapView != null) {
mMapView.postInvalidate();
}
}
/**
* Enable orientation sensor (compass) updates and show a compass on the map. You will want to
* call enableCompass() probably from your Activity's Activity.onResume() method, to enable the
* features of this overlay. Remember to call the corresponding disableCompass() in your
* Activity's Activity.onPause() method to turn off updates when in the background.
*/
public boolean enableCompass() {
boolean result = true;
if (mSensorListener == null) {
mSensorListener = new SensorEventListenerProxy(mSensorManager);
result =
mSensorListener.startListening(
this, Sensor.TYPE_ORIENTATION, SensorManager.SENSOR_DELAY_UI);
}
// Update the screen to see changes take effect
if (mMapView != null) {
mMapView.postInvalidate();
}
return result;
}