[android help] unable to insert into azure via android application

im doing a login register for my application and i have to integrate them together with microsoft azure. However, despite after following the tutorial given by microsoft azure, i still fail to insert my "string" into their database. There are also no error in the codes, hence i'm not very sure where is wrong. Below is my codes.

package mp.memberuse;

import java.net.MalformedURLException;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TabHost;
import android.widget.TabHost.TabSpec;
import android.widget.TextView;
import com.microsoft.windowsazure.mobileservices.*;

public class LoginRegister extends Activity {

Button btn1, btn2, btn3;
EditText tf1, tf2, tf3, tf4, tf5, tf6, tf7, tf8, tf9, tf10, tf11;
TextView tv1, tv2;

private MobileServiceClient mClient;

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    TabHost tabs = (TabHost) this.findViewById(R.id.lt2tabhost);
    tabs.setup();

    TabSpec ts1 = tabs.newTabSpec("Login");
    ts1.setIndicator("Login");
    ts1.setContent(R.id.c1);
    tabs.addTab(ts1);

    TabSpec ts2 = tabs.newTabSpec("Register");
    ts2.setIndicator("Register");
    ts2.setContent(R.id.c2);
    tabs.addTab(ts2);

    btn1 = (Button)findViewById(R.id.button1);
    btn2 = (Button)findViewById(R.id.button2);
    btn3 = (Button)findViewById(R.id.button3);

    tf1=(EditText) findViewById(R.id.editText1);
    tf2=(EditText) findViewById(R.id.editText2);
    tf3=(EditText) findViewById(R.id.editText3);
    tf4=(EditText) findViewById(R.id.editText4);
    tf5=(EditText) findViewById(R.id.editText5);
    tf6=(EditText) findViewById(R.id.editText6);
    tf7=(EditText) findViewById(R.id.editText7);
    tf8=(EditText) findViewById(R.id.editText8);
    tf9=(EditText) findViewById(R.id.editText9);
    tf10=(EditText) findViewById(R.id.editText10);

    tv1=(TextView) findViewById(R.id.login);
    tv2=(TextView) findViewById(R.id.register);

    try {
        MobileServiceClient mClient = new MobileServiceClient("https://testrun.azure-mobile.net/","FOJanABDYiJEVMHkCECAylrXJCnVwF77",this);
    } catch (MalformedURLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    btn1.setOnClickListener(new View.OnClickListener(){
        public void onClick(View v)
        {
            String username, password;
            username = tf1.getText().toString();
            password = tf2.getText().toString();


                    /**if(username.equals(sqlusername) && password.equals(sqlpassword))
                    {
                        SharedPreferences prefs = getSharedPreferences("myPreferences",Context.MODE_PRIVATE);
                        SharedPreferences.Editor editor = prefs.edit();
                        editor.putString("fullname", fullname);
                        editor.commit();

                        Intent intent = new Intent(LoginRegister.this, SendMessage.class);
                        startActivity(intent);
                    }
                    else
                    {
                        tv1.setText("Invalid user");
                    } **/
                }

        }
    );

    btn2.setOnClickListener(new View.OnClickListener(){
        public void onClick(View v)
        {
            String username, password, cpassword, fullname, nric, address, phone, email;
            username = tf3.getText().toString();
            password = tf4.getText().toString();
            cpassword = tf5.getText().toString();
            fullname = tf6.getText().toString();
            nric = tf7.getText().toString();
            address = tf8.getText().toString();
            phone = tf9.getText().toString();
            email = tf10.getText().toString();

            Members members = new Members();
            members.username = username;
            members.password = password;
            members.fullname = fullname;
            members.nric = nric;
            members.address = address;
            members.phone = phone;
            members.email = email;

            if(!password.equals(cpassword))
            {
                tv2.setText("Password & Confirm Password does not match.");
            }
            else if(username.equals("") || password.equals("") || cpassword.equals("") || fullname.equals("") || nric.equals("") || address.equals("") || phone.equals("") || email.equals(""))
            {
                tv2.setText("Do not leave any field empty.");
            }
            else
            {
                mClient.getTable(Members.class).insert(members, new TableOperationCallback() 
                {
                    public void onCompleted(Members entity, Exception exception, ServiceFilterResponse response) 
                    {
                        if (exception == null)
                        {
                            tv2.setText("Register Complete.");
                            tf3.setText("");
                            tf4.setText("");
                            tf5.setText("");
                            tf6.setText("");
                            tf7.setText("");
                            tf8.setText("");
                            tf9.setText("");
                            tf10.setText(""); 
                        } 
                        else 
                        {
                            tv2.setText("Fail to register!");
                        }
                    }
                });

                    tv2.setText("Register Complete.");
                    tf3.setText("");
                    tf4.setText("");
                    tf5.setText("");
                    tf6.setText("");
                    tf7.setText("");
                    tf8.setText("");
                    tf9.setText("");
                    tf10.setText(""); 
            }
        }
    });

    btn3.setOnClickListener(new View.OnClickListener(){
        public void onClick(View v)
        {
            tf3.setText("");
            tf4.setText("");
            tf5.setText("");
            tf6.setText("");
            tf7.setText("");
            tf8.setText("");
            tf9.setText("");
            tf10.setText("");           
        }
    });
}
}

.

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