main

package com.example.computer.homelockv3;

import android.app.Activity;
import android.os.AsyncTask;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.Socket;


public class MainActivity extends Activity {

    TcpClient mTcpClient;

    public class ConnectTask extends AsyncTask<String, String, TcpClient> {

        @Override
        protected TcpClient doInBackground(String... message) {

            //we create a TCPClient object
            mTcpClient = new TcpClient(new TcpClient.OnMessageReceived() {
                @Override
                //here the messageReceived method is implemented
                public void messageReceived(String message) {
                    //this method calls the onProgressUpdate
                    publishProgress(message);
                }
            });
            mTcpClient.run();

            return null;
        }

        @Override
        protected void onProgressUpdate(String... values) {
            super.onProgressUpdate(values);
            //response received from server
            Log.d("test", "response " + values[0]);
            //process server response here....

        }
    }


    public void setText(){
        Button myButton = (Button)findViewById(R.id.button);
        final EditText myInput = (EditText)findViewById(R.id.editText);
        myButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View arg0) {
                String code = myInput.getText().toString();
                if (mTcpClient != null) {
                    mTcpClient.sendMessage(code);
                }
            }
        });
    }
}