@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (Sensor.isActive() == false) {
Intent intent = new Intent(this, StartNewSensor.class);
startActivity(intent);
finish();
} else {
setContentView(R.layout.activity_stop_sensor);
button = (Button) findViewById(R.id.stop_sensor);
addListenerOnButton();
}
}