Android Update

package testing.gps_location;

import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.provider.Settings;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.Socket;
import java.net.SocketException;
import java.net.UnknownHostException;
import java.nio.channels.DatagramChannel;
import java.util.Date;
import java.util.Enumeration;

public class MainActivity extends AppCompatActivity {

    private Button b;
    private TextView t;
    private LocationManager locationManager;
    private LocationListener listener;


    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        t = (TextView) findViewById(R.id.textView);
        b = (Button) findViewById(R.id.button);

        locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);


        listener = new LocationListener() {
            @Override
            public void onLocationChanged(Location location) {
                t.append("\n " + location.getLongitude() + " " + location.getLatitude());
            }

            @Override
            public void onStatusChanged(String s, int i, Bundle bundle) {

            }

            @Override
            public void onProviderEnabled(String s) {

            }

            @Override
            public void onProviderDisabled(String s) {

                Intent i = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                startActivity(i);
            }
        };

        configure_button();
        //sendDataUDP("192.168.56.1");
        receiveDataTCP(5000,"192.168.56.1",t);
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        switch (requestCode) {
            case 10:
                configure_button();
                break;
            default:
                break;
        }
    }

    void configure_button() {
        // first check for permissions
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                requestPermissions(new String[]{Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.INTERNET}
                        , 10);
            }
            return;
        }
        // this code won't execute IF permissions are not allowed, because in the line above there is return statement.
        b.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                //noinspection MissingPermission
                locationManager.requestLocationUpdates("gps", 5000, 0, listener);
            }
        });
    }

    void sendDataUDP(String ipServer){
        final String finalIpServer = ipServer;
        new Thread(new Runnable(){
           // private final String SERVER_ADDRESS = ipServer;//public ip of my server
            private final static int SERVER_PORT = 10000;
            @Override
            public void run() {
                try {
                    //Preparing the socket
                    InetAddress serverAddr = InetAddress.getByName(finalIpServer);
                    DatagramSocket socket = new DatagramSocket();
                    //Preparing the packet
                    byte[] buf = ("Hello Viet Anh").getBytes();
                    DatagramPacket packet = new DatagramPacket(buf, buf.length, serverAddr, SERVER_PORT);

                    //Sending the packet
                    Log.d("UDP", String.format("Sending: '%s' to %s:%s", new String(buf), finalIpServer, SERVER_PORT));
                    socket.send(packet);
                    Log.d("UDP", "Packet sent.");
                } catch (Exception e) {
                    Log.e("UDP", "Client error", e);
                }
            }
        }).start();
    }
    void receiveDataTCP(int port, final String ipServer,final TextView textView){
        //t.append("\n Da vo roi nhe");
        final int Port = port;
        final String IpServer = ipServer;
        new Thread(new Runnable() {
                    @Override
                    public void run() {
                        try {
                            t.append("\n Da vo roi nhe");

                                Socket theSocket = new Socket(ipServer, Port);
//                                textView.append("\n" +"Connected to "
//                                        + theSocket.getInetAddress() +" on port "
//                                        + theSocket.getPort() + " from port "
//                                        + theSocket.getLocalPort() + " of "
//                                        + theSocket.getLocalAddress());
                                BufferedReader buff = new BufferedReader(new
                                        InputStreamReader(theSocket.getInputStream()));
                                String inputLine;
                                while ((inputLine = buff.readLine()) != null)
                                {
                                    textView.append("\n" +inputLine);
                                }

                                theSocket.close();



                        }
                        catch (UnknownHostException e) {

                            textView.append("\n" + e.toString());
                        }
                        catch (SocketException e) {
                            textView.append("\n" + e.toString());
                        }
                        catch (IOException e) {
                            textView.append("\n" + e.toString());
                        }
                        catch (Exception e) {
                            textView.append("\n" + e.toString());
                        }
                    }
                }
        ).start();
    }
}