@Override
public void onScroll(AbsListView view, int firstVisible, int visibleCount, int totalCount) {
if (mObjects == null) return;
boolean loadMore = /* maybe add a padding */
firstVisible + visibleCount >= mObjects.getTotalQueried();
if (loadMore) {
mLoader.cancelLoad();
if (getActivity() instanceof Filterable) {
Filterable context = (Filterable) getActivity();
if (context != null) {
List<String> filterTypes = new ArrayList<String>();
for (int x = 0; x < context.getFilterTypes().length; x++) {
if (context.getFilterCheckboxes()[x]) {
Log.w(TAG, "adding " + context.getFilterTypes()[x]);
filterTypes.add(context.getFilterTypes()[x]);
}
}
mLoader =
mObjects.queryLaterObjects(
getActivity(),
mFeedUri,
totalCount,
filterTypes.toArray(new String[filterTypes.size()]));
}
} else {
mLoader = mObjects.queryLaterObjects(getActivity(), mFeedUri, totalCount, null);
}
}
}
@Override
public void onDestroy() {
super.onDestroy();
if (mLoader != null) {
mLoader.cancelLoad();
}
// the mObjects field is accessed by the background loader
synchronized (this) {
if (mObjects != null) {
((ObjectListCursorAdapter) mObjects).closeCursor();
}
}
}