Question

I am working on an Android application, where some of the functions that users should input: register, locate hospital location, search for messages (sent via sms to registered users) and can schedule and make appointments.

So far, all the activities are done. However, I need to know how to connect to the database in order to read and store this data. I am using Android 2.1, Mac OS X, and the SQLite Firefox extension.

This is the code I have to connect to the SQLite database, what am I doing wrong?

package com.bitnuts.imom;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

public class DbManager extends SQLiteOpenHelper {

    private static final String DB_NAME = "iMom.sqlite";
    private static final String DB_PATH = "/data/data/com.bitnuts.imom/databases/";
    private static final Integer DB_VERSION = 1;
    private static final String TAG = "DbManager";
    private final Context context;
    private SQLiteDatabase db;
    private DbManager dbManager;

    public DbManager(Context context) {
        super(context, DB_NAME, null, DB_VERSION);
        this.context = context;
    }

    public DbManager open() {
        dbManager = new DbManager(context);
        db = dbManager.getWritableDatabase();
        return this;
    }

    @Override
    public void onCreate(SQLiteDatabase arg0) {

        createNewDatabase();
    }

    @Override
    public void onUpgrade(SQLiteDatabase arg0, int arg1, int arg2) {

        // TODO Auto-generated method stub
    }

    public void createNewDatabase() {
        InputStream assetsDB = null;
        try {
            assetsDB = context.getAssets().open(DB_NAME);
            OutputStream dbOut = new FileOutputStream(DB_PATH + DB_NAME);

            byte[] buffer = new byte[1024];
            int length;
            while ((length = assetsDB.read(buffer)) > 0) {
                dbOut.write(buffer, 0, length);
            }

            dbOut.flush();
            dbOut.close();
            assetsDB.close();
        }
        catch (IOException e) {
        }
    }
}

Answer 1

You cannot use the SQLite database directly in your application. You need to make some modifications. Such as the android_metadata table, etc. The blog post Using your own SQLite database in Android applications will help you.