@Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.next_Icon: if (connectionFragment.sockets.size() != 0) { connectionFragment.PasarALosGraficos(); item.setVisible(false); } else { Toast.makeText(this, getString(R.string.no_sensors), Toast.LENGTH_SHORT).show(); } break; } return super.onOptionsItemSelected(item); }