com.parse

Interface FindCallback<T extends ParseObject>

public interface FindCallback<T extends ParseObject>

A FindCallback is used to run code after a ParseQuery is used to fetch a list of ParseObjects in a background thread.

The easiest way to use a FindCallback is through an anonymous inner class. Override the done function to specify what the callback should do after the fetch is complete. The done function will be run in the UI thread, while the fetch happens in a background thread. This ensures that the UI does not freeze while the fetch happens.

For example, this sample code fetches all objects of class "MyClass". It calls a different function depending on whether the fetch succeeded or not.

 ParseQuery<ParseObject> query = ParseQuery.getQuery("MyClass");
 query.findInBackground(new FindCallback<ParseObject>() {
   public void done(List<ParseObject> objects, ParseException e) {
     if (e == null) {
       objectsWereRetrievedSuccessfully(objects);
     } else {
       objectRetrievalFailed();
     }
   }
 });
 

Method Summary

Methods

Modifier and Type	Method and Description
void	done(List<T> objects, ParseException e) Override this function with the code you want to run after the fetch is complete.

Method Detail

done

void done(List<T> objects,
        ParseException e)

Override this function with the code you want to run after the fetch is complete.

Parameters:

objects - The objects that were retrieved, or null if it did not succeed.

e - The exception raised by the save, or null if it succeeded.