如何使用SQLite在Android App中实现“服务器端”条带代码

我能够使用Stripes Android Walkthrough创建令牌。但是现在我想创建一个客户并最终产生一笔费用，他们会在这里显示如何在你的服务器上做。但是我正在使用SQLite作为数据库，因为此应用程序仅由少数人使用，并且仅由我自己加载到单个平板电脑上。所以我的问题是我可以在应用程序中创建客户而不必在应用程序中构建整个服务器端后端吗？

这是我创建令牌的代码，现在我要使用该令牌创建一个客户：（忽略应用程序的混乱情况，对不起，最终的应用程序将更加干净，只是尝试查看我是否可以使它正常工作）

package com.zeuspwr.zeuspower;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.Spinner;
import android.widget.Toast;

import com.stripe.android.*;
import com.stripe.android.model.Card;
import com.stripe.android.model.Token;
import com.stripe.android.Stripe;

import java.util.HashMap;
import java.util.Map;

public class newUser extends AppCompatActivity {
    EditText fNameh;
    EditText lNameh;
    EditText emailh;
    EditText phoneNumh;
    EditText pinh;
    EditText cardNumberh;
    EditText cardCVCh;
    Spinner cardExpMonthh;
    Spinner cardExpYearh;
    String fname;
    String lname;
    String email;
    String phonenum;
    String pin;
    String cardNumber;
    String cardCVC;
    Integer cardExpMonth;
    Integer cardExpYear;
    String stripetok;
    Card cardNew;

    String cardExpMonthStr;
    String cardExpYearStr;

    private static final String PUBLISHABLE_KEY = "pk_test_iUVdhdvJuurqSxIlXpzq32LS";
    UserDBHelper newUserr;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_new_user);

        newUserr = new UserDBHelper(newUser.this);

        fNameh = (EditText) findViewById(R.id.fNameNew);
        lNameh = (EditText) findViewById(R.id.lNameNew);
        emailh = (EditText) findViewById(R.id.emailNew);
        phoneNumh = (EditText) findViewById(R.id.phoneNew);
        pinh = (EditText) findViewById(R.id.pinNew);
        cardNumberh = (EditText) findViewById(R.id.cardNumNew);
        cardCVCh = (EditText) findViewById(R.id.cvcNew);
        cardExpMonthh = (Spinner) findViewById(R.id.monthNew);
        cardExpYearh = (Spinner) findViewById(R.id.yearNew);


        ImageButton createNewUser = (ImageButton) findViewById(R.id.createNew);



        createNewUser.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v)
            {

                fname = fNameh.getText().toString();
                lname = lNameh.getText().toString();
                email = emailh.getText().toString();
                phonenum = phoneNumh.getText().toString();
                pin = pinh.getText().toString();
                cardNumber = cardNumberh.getText().toString();
                cardCVC = cardCVCh.getText().toString();
                cardExpMonthStr = cardExpMonthh.getSelectedItem().toString();
                cardExpYearStr = cardExpYearh.getSelectedItem().toString();
                cardExpMonth = Integer.valueOf(cardExpMonthStr);
                cardExpYear = Integer.valueOf(cardExpYearStr);

                cardNew = new Card(
                        cardNumber,
                        cardExpMonth,
                        cardExpYear,
                        cardCVC
                );

                if(cardNew.validateCard() & cardNew.validateCVC()) {
                    final Stripe stripe = new Stripe();
                    stripe.createToken(cardNew, PUBLISHABLE_KEY, new TokenCallback() {
                        public void onSuccess(Token token) {
                            // TODO: Send Token information to your backend to initiate a charge


                            Toast.makeText(
                                    getApplicationContext(),
                                    "Token created: " + token.getId(),
                                    Toast.LENGTH_LONG).show();
                        }

                        public void onError(Exception error) {
                            Log.d("Stripe", error.getLocalizedMessage());
                        }
                    });

                }

                else{
                    Toast.makeText(
                            getApplicationContext(),
                            "Token not made!",
                            Toast.LENGTH_LONG).show();
                }



                /*Intent retPage = new Intent(BorroworReturn.this, returno.class);

                startActivity(retPage);*/
            }
        });