Parse查询有时仅返回用户？

Question

我在我的Android应用程序中使用parse.com搜索我的用户表并显示结果。它在多个字段中搜索并返回符合搜索字符串的所有用户。这是我的代码：

String searchParams = searchText.getText().toString().trim();

            if (!searchParams.isEmpty()) {
                final ArrayList<SearchResults> searchResults = new ArrayList<SearchResults>();
                listAdapter = new ListAdapter(activityContext, searchResults);
                listView.setAdapter(listAdapter);

                ParseQuery<ParseUser> queryName = ParseUser.getQuery();
                queryName.whereContains("name", searchParams);
                ParseQuery<ParseUser> queryPhone = ParseUser.getQuery();
                queryPhone.whereContains("username", searchParams);
                ParseQuery<ParseUser> queryEmail = ParseUser.getQuery();
                queryEmail.whereContains("email", searchParams);
                ParseQuery<ParseUser> querySurname1 = ParseUser.getQuery();
                querySurname1.whereContains("surname1", searchParams);
                ParseQuery<ParseUser> querySurname2 = ParseUser.getQuery();
                querySurname2.whereContains("surname2", searchParams);

                List<ParseQuery<ParseUser>> queries = new ArrayList<ParseQuery<ParseUser>>();
                queries.add(queryName);
                queries.add(queryPhone);
                queries.add(queryEmail);
                queries.add(querySurname1);
                queries.add(querySurname2);

                ParseQuery<ParseUser> mainQuery = ParseQuery.or(queries);

                mainQuery.findInBackground(new FindCallback<ParseUser>() {
                    @Override
                    public void done(List<ParseUser> objects, ParseException e) {
                        if (e == null) {
                            Log.d("USERS", "Retrieved " + objects.size() + " Users");
                            if (objects.size() > 0) {
                                for (ParseObject dealsObject : objects) {
                                    Log.i("NAME", dealsObject.getString("name"));
                                    Log.i("PRIVATE", Integer.toString(dealsObject.getInt("private")));
                                    final SearchResults sr1 = new SearchResults();
                                    sr1.setName(dealsObject.getString("name"));
                                    sr1.setSurname1(dealsObject.getString("surname1"));
                                    sr1.setSurname2(dealsObject.getString("surname2"));
                                    sr1.setUid(dealsObject.getObjectId());
                                    Log.d("UID", dealsObject.getObjectId());


                                    if (dealsObject.getInt("private") == 0) {
                                        sr1.setEmail(dealsObject.getString("email"));
                                        sr1.setPhone(dealsObject.getString("username"));
                                    } else {
                                        sr1.setPhone("xxx-xxx-xxx");
                                        sr1.setEmail("xxxxxx@xxxxx.xxx");
                                    }

                                    ParseFile fileObject = (ParseFile) dealsObject.get("thumbnail");
                                    try {
                                        byte[] imageBytes = fileObject.getData();
                                        sr1.setImage(BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.length));
                                    } catch (ParseException e1) {
                                        Log.e("ERROR", e.getMessage());
                                    }

                                    searchResults.add(sr1);
                                }
                                listAdapter.notifyDataSetChanged();
                                welcomeText.setVisibility(View.GONE);
                                listView.setVisibility(View.VISIBLE);
                                pDialog.hide();
                            }
                            else if (objects.size() == 0)
                            {
                                Toast.makeText(getApplicationContext(), R.string.no_search_results, Toast.LENGTH_LONG).show();
                                pDialog.hide();
                            }

                        } else {
                            Log.d("USERS", "Error: " + e.getMessage());
                        }
                    }
                });

我的问题是，即使在搜索我知道的用户时，大多数时候它告诉我它找到了0个用户。如果我继续使用相同的搜索字符串运行搜索，可能会有一次从5开始实际返回用户。我遇到的另一个问题是已删除的用户，但搜索仍会找到它们，然后当应用程序尝试从中提取信息时，应用程序会抛出nullPointerException。我的代码有问题吗？

感谢您的时间