adb port forwarding

ADB-forward

adb forward tcp:5001 tcp:8081

Main.java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;

public class Main {

  public static void main(String[] args) {
		new ConnectionToRaspberryPi().start();
	}

class ConnectionToRaspberryPi extends Thread {

	public void run() {

		Socket echoSocket = null;
		PrintWriter out = null;
		BufferedReader in = null;
		String serverHostname = "localhost";
		try {
			echoSocket = new Socket("localhost", 5001);
			out = new PrintWriter(echoSocket.getOutputStream(), true);
			in = new BufferedReader(new InputStreamReader(
					echoSocket.getInputStream()));
			String line = null;
			try {
				while ((line = in.readLine()) != null) {
					Main.runScript(player);
				}
			} catch (IOException e) {
				System.exit(0);
			}

			out.close();
			in.close();
			echoSocket.close();
		} catch (UnknownHostException e) {
			System.err.println("Don't know about host: " + serverHostname);
			System.exit(1);
		} catch (IOException e) {
			System.err.println("Couldn't get I/O for " + "the connection to: "
					+ serverHostname);
			System.exit(1);
		}
	}
}

ServerApplication.java

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;

import android.app.Application;
import android.os.Environment;
import android.util.Log;
import android.widget.Toast;

public class ServerApplication extends Application {

	public static Socket clientSocket = null;
	public static PrintWriter out = null;
	public static ArrayList<Question> questions = null;

	@Override
	public void onCreate() {
		super.onCreate();
		Runnable r = new Runnable() {
			@Override
			public void run() {
				ServerSocket serverSocket = null;
				try {
					serverSocket = new ServerSocket(8081);
					while (true) {
						clientSocket = serverSocket.accept();
						//Waiting for raspberry pi to connect to android device
						Log.d("Connecting", "Waiting for connection.....");
						try {
							out = new PrintWriter(
									clientSocket.getOutputStream(), true);
						} catch (IOException e) {
							Log.d("Connecting", "client did not connect");
						}

					}
				} catch (IOException e) {
					System.err.println("Could not listen on port: 10007.");
					System.exit(0);
				}
				Log.d("epics", "Connection successful");
				Log.d("epics", "Waiting for input.....");
			}
		};
		new Thread(r).start();

	}

}