// unregister
@Override
public void onPause() {
super.onPause();
sensorManager.unregisterListener(this);
// camera
// Because the Camera object is a shared resource, it's very
// important to release it when the activity is paused.
if (mCamera != null) {
mPreview.setCamera(null);
mCamera.release();
mCamera = null;
}
// end camera
}
// register to listen to sensors
@Override
public void onResume() {
Log.e("onResume", " ");
super.onResume();
Sensor sensor = sensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION);
sensorManager.registerListener(this, sensor, SensorManager.SENSOR_DELAY_FASTEST);
// sensorManager.registerListener(this, sensor);
// camera
// Open the default i.e. the first rear facing camera.
mCamera = Camera.open();
mCamera.setDisplayOrientation(90);
// cameraCurrentlyLocked = defaultCameraId;
mPreview.setCamera(mCamera);
// end camera
}