Retrieving information from Parse

Question

I am trying to retrieve information from parse. In particular, I have added a condition where it would only return the list of users that have selected the same activity.

I have tried the below code, but it does seem to work, as that condition returns an empty list.

ParseQuery<ParseUser> query = ParseUser.getQuery(); query.whereNotEqualTo("objectId", currentUserId); query.whereEqualTo("ActivityName",""); It would essentially see which users have selected that particular activity name and return

Below is the entire code

public class MatchingActivity extends Activity {

private String currentUserId; private ArrayAdapter<String> namesArrayAdapter; private ArrayList<String> names; private ListView usersListView; private Button logoutButton;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.matching);

    logoutButton = (Button) findViewById(R.id.logoutButton);
    logoutButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            ParseUser.logOut();
            Intent intent = new Intent(getApplicationContext(), LoginActivity.class);
            startActivity(intent);
        }
    });

    setConversationsList();
}

private void setConversationsList() {
    currentUserId = ParseUser.getCurrentUser().getObjectId();
    names = new ArrayList<String>();


    ParseQuery<ParseUser> query = ParseUser.getQuery();
   query.whereNotEqualTo("objectId", currentUserId);
    query.whereEqualTo("ActivityName",userActivitySelectionName);

    query.findInBackground(new FindCallback<ParseUser>() {
        public void done(List<ParseUser> userList, ParseException e) {
            if (e == null) {
                for (int i=0; i<userList.size(); i++) {
                    names.add(userList.get(i).getUsername().toString());
                }

                usersListView = (ListView)findViewById(R.id.usersListView);
                namesArrayAdapter =
                    new ArrayAdapter<String>(getApplicationContext(),
                        R.layout.user_list_item, names);
                usersListView.setAdapter(namesArrayAdapter);

                usersListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                    @Override
                    public void onItemClick(AdapterView<?> a, View v, int i, long l) {
                        openConversation(names, i);
                    }
                });

            } else {
                Toast.makeText(getApplicationContext(),
                    "Error loading user list",
                        Toast.LENGTH_LONG).show();
            }
        }
    });
}

public void openConversation(ArrayList<String> names, int pos) {
    ParseQuery<ParseUser> query = ParseUser.getQuery();
    query.whereEqualTo("username", names.get(pos));
    query.findInBackground(new FindCallback<ParseUser>() {
       public void done(List<ParseUser> user, ParseException e) {
           if (e == null) {
               Intent intent = new Intent(getApplicationContext(), MessagingActivity.class);
               intent.putExtra("RECIPIENT_ID", user.get(0).getObjectId());
               startActivity(intent);
           } else {
               Toast.makeText(getApplicationContext(),
                   "Error finding that user",
                       Toast.LENGTH_SHORT).show();
           }
       }
    });
}

} Thanks in advance.

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Jonathan Etienne

Jonathan Etienne

Retrieving information from Parse