Problem to connect MySql database in android at localhost server .

[AC Question]

I want to connect mySql data base in android but it does not .
*here is my code to connect with php file to insert data
.......

package com.broken.nezamulislamar.mysqlblog_1;
import android.content.Context;
import android.os.AsyncTask;
import android.widget.TextView;

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.iutputStreamWriter;
import java.net.URI;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;

public class SigninActivity extends AsyncTask<String,Void,String>{
private TextView statusField,roleField;
private Context context;
private int byGetOrPost = 0;

//flag 0 means get and 1 means post.(By default it is get.)
public SigninActivity(Context context,TextView statusField,TextView roleField,int flag) {
this.context = context;
//this.statusField = statusField;
//this.roleField = roleField;
byGetOrPost = flag;
}

protected void onPreExecute(){

}

@Override
protected String doInBackground(String... arg0) {
if(byGetOrPost == 0){ //means by Get Method

try{
String username = (String)arg0[0];
String password = (String)arg0[1];
String link = "http://127.0.0.1/Client/jakir.php?username="+username+"& password="+password;

URL url = new URL(link);
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet();
request.setURI(new URI(link));
HttpResponse response = client.execute(request);
BufferedReader in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));

StringBuffer sb = new StringBuffer("");
String line="";

while ((line = in.readLine()) != null) {
sb.append(line);
break;
}
in.close();
return sb.toString();
}

catch(Exception e){
return new String("Exception: " + e.getMessage());
}
}
else{
try{
String username = (String)arg0[0];
String password = (String)arg0[1];

String link="http://127.0.0.1/Client/jakir.php?";
String data = URLEncoder.encode("name", "UTF-8") + "=" + URLEncoder.encode(username, "UTF-8");
data += "&" + URLEncoder.encode("email", "UTF-8") + "=" + URLEncoder.encode(password, "UTF-8");

URL url = new URL(link);
URLConnection conn = url.openConnection();

conn.setDoOutput(true);
OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());

wr.write( data );
wr.flush();

BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));

StringBuilder sb = new StringBuilder();
String line = null;

// Read Server Response
while((line = reader.readLine()) != null)
{
sb.append(line);
break;
}
return sb.toString();
}
catch(Exception e){
return new String("Exception: " + e.getMessage());
}
}
}

@Override
protected void onPostExecute(String result){
this.statusField.setText("Login Successful");
this.roleField.setText(result);
}
}

*here is the exception it shows
....
Exception: failed to connect to /127.0.0.1(port80):connect failed: ECONNREFUSED(Connection Refused)