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public class MainActivity extends AppCompatActivity {

private String ip = "192.168.0.53";
private int port = 12345;
private MediaPlayer hoeDongSong;

boolean sound = true;
boolean fabView = false;
//boolean oneMoreTime = false;
boolean serverIsNotOpen = false;

Socket m_socket = null;
OutputStream out_stream;
InputStream inputStream = null;

TextView textView;

EditText editText1;

ImageButton music;

SeekBar seekbar;

Button button1;
Button button2;
Button buttonBlue;
Button buttonConnect;

String inputText ="";
String response;
String carNumber;
String time = "";
String str = "perfect";

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);

FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
editText1 = (EditText) findViewById(R.id.et1);
button1 = (Button) findViewById(R.id.btn1);
button2 = (Button) findViewById(R.id.btn2);
buttonConnect = (Button) findViewById(btnConnect);

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