com.parse
Class GetCallback<T extends ParseObject>

Object
  extended by com.parse.GetCallback<T>

public abstract class GetCallback<T extends ParseObject>
extends Object

A GetCallback is used to run code after a ParseQuery is used to fetch a ParseObject in a background thread.

The easiest way to use a GetCallback 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 an object of class "MyClass" and id myId. It calls a different function depending on whether the fetch succeeded or not.

 ParseQuery<ParseObject> query = ParseQuery.getQuery("MyClass");
 query.getInBackground(myId, new GetCallback<ParseObject>() {
   public void done(ParseObject object, ParseException e) {
     if (e == null) {
       objectWasRetrievedSuccessfully(object);
     } else {
       objectRetrievalFailed();
     }
   }
 });
 


Constructor Summary
GetCallback()
           
 
Method Summary
abstract  void done(T object, ParseException e)
          Override this function with the code you want to run after the fetch is complete.
 
Methods inherited from class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

GetCallback

public GetCallback()
Method Detail

done

public abstract void done(T object,
                          ParseException e)
Override this function with the code you want to run after the fetch is complete.

Parameters:
object - The object that was retrieved, or null if it did not succeed.
e - The exception raised by the save, or null if it succeeded.