Parse findInBackground doesn't add to global arraylist?

Parse findInBackground doesn't add to global arraylist?

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Parse findInBackground doesn't add to global arraylist?
Tag : java , By : Alex S
Date : November 29 2020, 09:01 AM

it fixes the issue This is a snippet of my code with small edits in names.
String[] items;
final ArrayList<String>tempListItems;
    tempListItems= new ArrayList<>();

public void initList() {
        items = new String[tempListItems.size()];
        items = tempListItems.toArray(items);

        Log.d("HSearch - initList", "Generate Clean List");
        Log.d("initList - temp size", Integer.toString(tempListItems.size()));
        Log.d("initList - items size", Integer.toString(items.length));

private boolean query() {
    ParseQuery<ParseObject> query = ParseQuery.getQuery("Table");
    query.findInBackground(new FindCallback<ParseObject>() {
        public void done(List<ParseObject> list, com.parse.ParseException e) {
            if (e == null) {
                for (ParseObject name : list) {
            } else {
                Log.d("score", "Error: " + e.getMessage());
    return true;

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Parse.com query findInBackground doesn't return any data

Tag : java , By : Ir0nh1de
Date : March 29 2020, 07:55 AM
it fixes the issue As per https://parse.com/docs/android/api/com/parse/ParseQuery.html#findInBackground(com.parse.FindCallback) : public void findInBackground(FindCallback callback)
Retrieves a list of ParseObjects that satisfy this query from the server in a background thread. This is preferable to using find(), unless your code is already running in a background thread.

How to fix "Unchecked call to findInBackground" with Parse.com API

Tag : android , By : Vrki
Date : March 29 2020, 07:55 AM
Hope that helps You just need to type your ParseQuery:
Replace ParseQuery query with ParseQuery query

Android: Parse.com concurrency issue with findInBackground()

Tag : java , By : KaoFloppy
Date : March 29 2020, 07:55 AM
seems to work fine Both of your problems are a result of asynchronous work. If you call the putPerson method twice, they will both run near-simultaneously in separate background threads and both find-queries will most likely return almost at the same time, and definitely before the first call has saved the new person.
In your example, the getPerson call will return before the background threads have been able to save your three people as well.

Parse.com - differencies between query.find( ) and query.findinBackground( )

Tag : android , By : n800s
Date : March 29 2020, 07:55 AM
To fix the issue you can do findInBackground() is executed in new background thread (is not a service is just a thread), since you already are in background thread is no need to call findInBackground() except if you have some specific requirements and you need multiple threads...
So you can use findInBackground() from main thread and remove asynTask or you use find() inside asyTask if you have additional preprocessing or post processing that you must execute in background thread

Which thread do we get the call back on when calling findInBackground() on Parse android API

Tag : java , By : Mariocki
Date : March 29 2020, 07:55 AM
Hope that helps I think the callback method will execute on the thread you used to call findInBackground, so if that's the UI thread and you have more network to do there, you'll need to use other background threads. You can verify by calling the synchronous method and see if you get a NetworkOnMainThreadException (on a recent enough device).
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