onResume and onPause for AccelerometerDemo

gistfile1.java

@Override
protected void onResume() {
	super.onResume();
	setAccelerometerUpdatesEnabled(true);
}

@Override
protected void onPause() {
	super.onPause();
	setAccelerometerUpdatesEnabled(false);
}

@Override
protected void onDestroy() {
	super.onDestroy();

	// Unregister for updates about screen on/dim changes.
	unregisterReceiver(mReceiver);
}

private void setAccelerometerUpdatesEnabled(boolean enabled) {
	if (enabled) {
		// Register for accelerometer update events.
		mSensorManager.registerListener(this,
				mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
				SensorManager.SENSOR_DELAY_NORMAL);
	} else {
		// Unregister for accelerometer update events. If nobody else in
		// the system is registered for events the accelerometer will be
		// allowed to power down.
		mSensorManager.unregisterListener(this);
	}
}