Error copying a SQLite database in android

Could someone guide me? I've been involved with this for a couple of days and it fails.

I have a SQLite .db file that contains an empty database. the idea is to copy it to my android application from the assets directory, which is located in src / main / assets.

But something is failing and I do not know what it is. I suspect where the fault is, but I can not find the key. I create a database, but it creates it empty (without tables).

For help, the DB file is this:

link

My code is as follows:

private String DB_PATH;
    private static String DB_NAME = "organizapp.db";
    ...

     * Crea una base de datos vacía en el sistema y la reescribe con nuestro
     * fichero de base de datos.
     * */
    private void createDataBase(){

        boolean dbExist = checkDataBase();

        this.getWritableDatabase();

        if(!dbExist) {

            try {

                copyDataBase();

            } catch (IOException e) {
                throw new Error(myContext.getString(R.string.error_copiando_bd));
            }
        }
    }

    /**
     * Comprueba si la base de datos existe para evitar copiar siempre el
     * fichero cada vez que se abra la aplicación.
     * @return true si existe, false si no existe
     */
    public boolean checkDataBase(){

        SQLiteDatabase checkDB = null;
        Log.d("Comprobando bd","Objeto a null");
        try{
            checkDB = SQLiteDatabase
                    .openDatabase(this.DB_PATH,
                            null,
                            SQLiteDatabase.OPEN_READONLY);

        }catch(SQLiteException e){
            Log.d("Creando bd","No hay bd.");
            //si llegamos aqui es porque la base de datos no existe todavía.

        }
        if(checkDB != null){
            checkDB.close();

        }
        return checkDB != null ? true : false;
    }

    /**
     * Copia nuestra base de datos desde la carpeta assets a la recién creada
     * base de datos en la carpeta de sistema, desde dónde podremos acceder a
     * ella.
     * Esto se hace con bytestream.
     * */
    private void copyDataBase() throws IOException{
Log.d("Copiando db","entramos.");
        //Abrimos el fichero de base de datos como entrada
        InputStream myInput = myContext.getAssets().open(DB_NAME);
        Log.d("Creando bd","Abrimos"+DB_NAME);

        //Ruta a la base de datos vacía recién creada
        String outFileName = getDB_PATH();
        Log.d("Creando bd","apuntamos a "+getDB_PATH());

        //Abrimos la base de datos vacía como salida
        OutputStream myOutput = new FileOutputStream(outFileName);

        //Transferimos los bytes desde el fichero de entrada al de salida
        byte[] buffer = new byte[1024];
        int length;
        while ((length = myInput.read(buffer))>0){
            myOutput.write(buffer, 0, length);
        }

        //Liberamos los streams
        myOutput.flush();
        myOutput.close();
        myInput.close();
        Log.d("Creando bd","BD Copiada");
    }

What am I doing wrong?

Thanks in advance.