CoNaObiadDbHelper.java

public class CoNaObiadDbHelper extends SQLiteOpenHelper {

    public static final int DATABASE_VERSION = 5;
    public static final String DATABASE_NAME = "CoNaObiad.db";

    public CoNaObiadDbHelper(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        BaseTable table = new MealContract();
        db.execSQL(table.getCreateEntriesQuery());
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        BaseTable table = new MealContract();
        db.execSQL(table.getDropTableQuery());
        onCreate(db);
    }

    public void cleanData() {
        SQLiteDatabase db = this.getWritableDatabase();
        BaseTable table = new MealContract();
        db.execSQL(table.getDeleteEntriesQuery());
    }

    public void insertValuesDbHelper(String tableName, ContentValues contentValues) {
        SQLiteDatabase db = this.getWritableDatabase();
        db.insert(tableName, null, contentValues);
        db.close();
    }
}