이 소스 짧게 나마 분석 해주실분 있나여? ㅠㅠ
공부하고 있는데 이해가 너무 안되가지고요
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.graphics.Color;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RelativeLayout;
import android.widget.TextView;

public class SocketEx extends Activity implements View.OnClickListener{
private final static String BR=System.getProperty("line.separator");
private final static String IP="192.168.1.181";
private SocketEx current;
private TextView lblReceive;
private EditText edtSend;
private Button btnSend;
private Socket socket;
private InputStream in;
private OutputStream out;
private final Handler handler=new Handler();
private String txtReceive;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
       
        current=this;
        RelativeLayout layout=new RelativeLayout(this);
        layout.setBackgroundColor(Color.rgb(255,255,255));
        setContentView(layout);
       
        lblReceive=new TextView(this);
        lblReceive.setId(1);
        lblReceive.setText("");
        lblReceive.setTextSize(16.0f);
        lblReceive.setTextColor(Color.rgb(0,0,0));
        RelativeLayout.LayoutParams param1=new RelativeLayout.LayoutParams(320,400);
        lblReceive.setLayoutParams(param1);
        layout.addView(lblReceive);
        edtSend=new EditText(this);
        edtSend.setId(2);
        edtSend.setText("",TextView.BufferType.NORMAL);
        RelativeLayout.LayoutParams param2=new RelativeLayout.LayoutParams(200,50);
        param2.addRule(RelativeLayout.BELOW,1);
        edtSend.setLayoutParams(param2);
        layout.addView(edtSend);
        btnSend=new Button(this);
        btnSend.setText("전송");
        btnSend.setOnClickListener(this);
        RelativeLayout.LayoutParams param3=new RelativeLayout.LayoutParams(200,50);
        param3.addRule(RelativeLayout.BELOW,1);
        param3.addRule(RelativeLayout.RIGHT_OF,2);
        btnSend.setLayoutParams(param3);
        layout.addView(btnSend);
        (new Thread() {public void run(){
        try{
        connect (IP,8080);
        } catch(Exception e) {
        }
        }}).start();
    }
    private void connect(String ip,int port){
    int size;
    byte[] w=new byte[1024];
    txtReceive="";
   
    try{
    socket=new Socket (ip,port);
    in=socket.getInputStream();
    out=socket.getOutputStream();
   
    while(socket !=null && socket.isConnected()) {
    size=in.read(w);
    if(size<=0)continue;
    txtReceive=new String(w,0,size,"UTF-8");
    handler.post(new Runnable(){
    public void run(){
    lblReceive.setText(
    lblReceive.getText() +txtReceive+BR);
    }
    });
    }
    } catch (Exception e) {
    handler.post(new Runnable() {
    public void run() {
    SocketEx.showDialog(current,"","통신 에러입니다.");
    }
    });
    }
    }
    public void onClick(View v) { 
    if(v==btnSend) {
    try {
    if(socket !=null&&socket.isConnected()) {
    String str="김근태"+edtSend.getText().toString();
    byte [] w=edtSend.getText().toString().getBytes("UTF8");
    out.write(w);
    out.flush();
    edtSend.setText("",TextView.BufferType.NORMAL);
    }
    } catch (Exception e) {
    handler.post(new Runnable(){
    public void run(){
    SocketEx.showDialog(current,"","통신 에러입니다.");
    }
    });
    }
    }
    }
    public static void showDialog(final Activity activity, String title, String text) {
    AlertDialog.Builder ad=new AlertDialog.Builder(activity);
    ad.setTitle(title);
    ad.setMessage(text);
    ad.setPositiveButton("OK",new DialogInterface.OnClickListener() {
    public void onClick(DialogInterface dialog,int whichButton) {
    activity.setResult(Activity.RESULT_OK);
    }
    });
    ad.create();
    ad.show();
    }
}    
이 게시물을