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<div class="subTitle">com.parse</div>
<h2 title="Interface GetCallback" class="title">Interface GetCallback<T extends <a href="../../com/parse/ParseObject.html" title="class in com.parse">ParseObject</a>></h2>
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<pre>public interface <span class="strong">GetCallback<T extends <a href="../../com/parse/ParseObject.html" title="class in com.parse">ParseObject</a>></span></pre>
<div class="block">A <code>GetCallback</code> is used to run code after a <a href="../../com/parse/ParseQuery.html" title="class in com.parse"><code>ParseQuery</code></a> is used to fetch a
<a href="../../com/parse/ParseObject.html" title="class in com.parse"><code>ParseObject</code></a> in a background thread.
<p/>
The easiest way to use a <code>GetCallback</code> is through an anonymous inner class. Override the
<code>done</code> function to specify what the callback should do after the fetch is complete.
The <code>done</code> 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.
<p/>
For example, this sample code fetches an object of class <code>"MyClass"</code> and id
<code>myId</code>. It calls a different function depending on whether the fetch succeeded or not.
<p/>
<pre>
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();
}
}
});
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../com/parse/GetCallback.html#done(T,%20com.parse.ParseException)">done</a></strong>(<a href="../../com/parse/GetCallback.html" title="type parameter in GetCallback">T</a> object,
<a href="../../com/parse/ParseException.html" title="class in com.parse">ParseException</a> e)</code>
<div class="block">Override this function with the code you want to run after the fetch is complete.</div>
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<h4>done</h4>
<pre>void done(<a href="../../com/parse/GetCallback.html" title="type parameter in GetCallback">T</a> object,
<a href="../../com/parse/ParseException.html" title="class in com.parse">ParseException</a> e)</pre>
<div class="block">Override this function with the code you want to run after the fetch is complete.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>object</code> - The object that was retrieved, or <code>null</code> if it did not succeed.</dd><dd><code>e</code> - The exception raised by the fetch, or <code>null</code> if it succeeded.</dd></dl>
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