How to Delete item in ListView and Database - Android Studio

My Activity Code

Please help me how to delete item in list view that connect to database in Android Studio. This my code :

mainListView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {

            public boolean onItemLongClick(AdapterView parent, View view, final int position, final long id) {

                final AlertDialog.Builder b = new AlertDialog.Builder(UserList.this);
                b.setIcon(android.R.drawable.ic_dialog_alert);
                b.setMessage("Ingin menghapus data?");

                b.setPositiveButton("Ya",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int whichButton) {

                                IDTable = IDList.get(position);
                                userList.remove(position);
                                UserList.this.listAdapter.notifyDataSetChanged();

                                InfoPokok info = new InfoPokok();
                                info.setId(IDTable);

                                System.out.println("ID : " + info.getId());
                                infoPokokDao.deleteInfoPokok(info);
                            }
                        });
                b.setNegativeButton("Tidak",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int whichButton) {
                                dialog.cancel();
                            }
                        });


                b.show();
                return true;
            }
        });

DAO :

public void deleteInfoPokok(InfoPokok infoPokok) {
String id = infoPokok.getId() + "";


        long deleteId = database.delete(MySQLiteHelper.TABLE_INFO_POKOK, MySQLiteHelper.COLUMN_ID
                + " =?", new String[]{id});
        Cursor cursor = database.query(MySQLiteHelper.TABLE_INFO_POKOK,
                allColumns, MySQLiteHelper.COLUMN_ID + " = " + deleteId, null,
                null, null, null);
        cursor.moveToFirst();
        cursor.close();
    }