public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); String[] msg = {"0", "", "", "", "", "", "", ""}; CH = new Custom_Handler(1); send_packet = new Packet(); send_packet.setType(1); send_packet.setData(msg); Log.d("Get_Statistics", "write on send_packet"); elec_thread = new Elec_Client(CH, send_packet); try { elec_thread.start(); } catch (Exception e) { e.printStackTrace(); } }