Android : Show SQLite data in ListView

I'm trying to show data from SQLite in listview.

There's no error on my code but I got this as a result

Here's my code.

    DatabaseHandler db = new DatabaseHandler(this);

    /**
     * CRUD Operations
     * */
    Log.d("Reading: ", "Reading all contacts.."); 
    List<AllItem> allItems = new ArrayList<AllItem>();

    allItems = db.getAllAccommodations();       

    for (AllItem cn : allItems) {
        String log = "Table Id: "+cn.getTableID()+",Id: "+cn.getID()+" ,Name: " + cn.getCategory_name() + " ,Phone: " + cn.getItem_name();
            // Writing Contacts to log
    Log.d("Name: ", log);
    }

    ArrayAdapter adapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, allItems);
    listview.setAdapter(adapter);

How to get the real data from SQLite ?

Thanks before :D