How to insert data into sql server from android application via wcf service?

package com.sample;
import java.io.InputStream;
import java.net.URLEncoder;
import java.util.ArrayList;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.StatusLine;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.xmlpull.v1.XmlPullParserFactory;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener 
{
	public XmlPullParserFactory xmlFactoryObject;
	ProgressDialog pd=null;
	EditText user=null,pass=null;
	@Override
	protected void onCreate(Bundle savedInstanceState) 
	{
		super.onCreate(savedInstanceState);
		setContentView(R.layout.sample2);
		Button print=(Button) findViewById(R.id.button2);
		Button submit=(Button) findViewById(R.id.button1);
		user=(EditText) findViewById(R.id.editText1);
		pass=(EditText) findViewById(R.id.editText2);
		submit.setOnClickListener(this);
	}

	@Override
	public void onClick(View v) 
	{
		LoginDetails details=new LoginDetails();
		details.execute();

	}
	class LoginDetails extends AsyncTask<string,>
	{
		@Override
		public void onPreExecute()
		{
			pd=new ProgressDialog(MainActivity.this);
			pd.setMessage("Please wait....");
			pd.setCancelable(false);
			pd.show();
		}
		@Override
		protected String doInBackground(String... params)
		{
			String username=user.getText().toString();
			String password=pass.getText().toString();
			String inputxele="LoginData UserName='"+username+"' UserPassword='"+password+"'";
			String sp="USP_AreaMst";
			String tt="CreateLoginData";
			String url="http://10.0.2.2/JsonWcfService/GetEmployees.svc/GetAllReportsMethod?";
			String parameters="spName="+URLEncoder.encode(sp)+"&inputxele="+URLEncoder.encode(inputxele)+"&transType="+URLEncoder.encode(tt);
			String ur= url+parameters;
			InputStream instream =null;
			String resultdata=null;
			try
			{
				ArrayList<namevaluepair> nameValuePairs = new ArrayList<namevaluepair>();
				nameValuePairs.add(new BasicNameValuePair("spName", sp));
				nameValuePairs.add(new BasicNameValuePair("inputxele", inputxele));
				nameValuePairs.add(new BasicNameValuePair("transType", tt));
				HttpParams httpParameters = new BasicHttpParams();
				HttpConnectionParams.setConnectionTimeout(httpParameters, 20000);
				HttpConnectionParams.setSoTimeout(httpParameters, 20000);
				HttpClient httpclient = new DefaultHttpClient(httpParameters);
				HttpPost post=null;
				try
				{	
					post=new HttpPost(url);
					post.setEntity(new UrlEncodedFormEntity(nameValuePairs));
					HttpResponse response = httpclient.execute(post);
					StatusLine statusLine = response.getStatusLine();
					if(statusLine.getStatusCode() == HttpStatus.SC_OK)
					{
						HttpEntity entity = response.getEntity();
						Toast.makeText(MainActivity.this, "Data Inserted sucessfully", Toast.LENGTH_LONG).show();
						instream.close();
					}
					else
					{
						Toast.makeText(MainActivity.this, "Incorrect data", Toast.LENGTH_LONG).show();
					}
				}
				catch (Exception e)
				{
					e.printStackTrace();
				}
			}
			catch (Exception e) 
			{
				e.printStackTrace();
			}
			return resultdata;
		}

		@Override
		protected void onPostExecute(String result)
		{
			super.onPostExecute(result);
			if(pd!=null)
			{
				pd.dismiss();

			}
		}

		//	@Override
		//	public void onClick(View v) 
		//	{	
		//		if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){
		//		    //handle case of no SDCARD present
		//		} 
		//		else
		//		{
		//		    String dir = Environment.getExternalStorageDirectory()+File.separator+"myDirectory";
		//		    //create folder
		//		    File folder = new File(dir); //folder name
		//		    folder.mkdirs();
		//
		//		    //create file
		//		    File file = new File(dir, "raghu.txt");
		//		}
		//	}  
	}
}