private void processImageResponse(
ImageResponse response, String graphObjectId, ImageView imageView) {
pendingRequests.remove(graphObjectId);
if (response.getError() != null) {
callOnErrorListener(response.getError());
}
if (imageView == null) {
// This was a pre-fetch request.
if (response.getBitmap() != null) {
// Is the cache too big?
if (prefetchedPictureCache.size() >= MAX_PREFETCHED_PICTURES) {
// Find the oldest one and remove it.
String oldestId = prefetchedProfilePictureIds.remove(0);
prefetchedPictureCache.remove(oldestId);
}
prefetchedPictureCache.put(graphObjectId, response);
}
} else if (graphObjectId.equals(imageView.getTag())) {
Exception error = response.getError();
Bitmap bitmap = response.getBitmap();
if (error == null && bitmap != null) {
imageView.setImageBitmap(bitmap);
imageView.setTag(response.getRequest().getImageUri());
}
}
}
public void prioritizeViewRange(int firstVisibleItem, int lastVisibleItem, int prefetchBuffer) {
if ((lastVisibleItem < firstVisibleItem) || (sectionKeys.size() == 0)) {
return;
}
// We want to prioritize requests for items which are visible but do not have pictures
// loaded yet. We also want to pre-fetch pictures for items which are not yet visible
// but are within a buffer on either side of the visible items, on the assumption that
// they will be visible soon. For these latter items, we'll store the images in memory
// in the hopes we can immediately populate their image view when needed.
// Prioritize the requests in reverse order since each call to prioritizeRequest will just
// move it to the front of the queue. And we want the earliest ones in the range to be at
// the front of the queue, so all else being equal, the list will appear to populate from
// the top down.
for (int i = lastVisibleItem; i >= 0; i--) {
SectionAndItem<T> sectionAndItem = getSectionAndItem(i);
if (sectionAndItem.graphObject != null) {
String id = getIdOfGraphObject(sectionAndItem.graphObject);
ImageRequest request = pendingRequests.get(id);
if (request != null) {
ImageDownloader.prioritizeRequest(request);
}
}
}
// For items which are not visible, but within the buffer on either side, we want to
// fetch those items and store them in a small in-memory cache of bitmaps.
int start = Math.max(0, firstVisibleItem - prefetchBuffer);
int end = Math.min(lastVisibleItem + prefetchBuffer, getCount() - 1);
ArrayList<T> graphObjectsToPrefetchPicturesFor = new ArrayList<T>();
// Add the IDs before and after the visible range.
for (int i = start; i < firstVisibleItem; ++i) {
SectionAndItem<T> sectionAndItem = getSectionAndItem(i);
if (sectionAndItem.graphObject != null) {
graphObjectsToPrefetchPicturesFor.add(sectionAndItem.graphObject);
}
}
for (int i = lastVisibleItem + 1; i <= end; ++i) {
SectionAndItem<T> sectionAndItem = getSectionAndItem(i);
if (sectionAndItem.graphObject != null) {
graphObjectsToPrefetchPicturesFor.add(sectionAndItem.graphObject);
}
}
for (T graphObject : graphObjectsToPrefetchPicturesFor) {
URI uri = getPictureUriOfGraphObject(graphObject);
final String id = getIdOfGraphObject(graphObject);
// This URL already have been requested for pre-fetching, but we want to act in an LRU manner,
// so move
// it to the end of the list regardless.
boolean alreadyPrefetching = prefetchedProfilePictureIds.remove(id);
prefetchedProfilePictureIds.add(id);
// If we've already requested it for pre-fetching, no need to do so again.
if (!alreadyPrefetching) {
downloadProfilePicture(id, uri, null);
}
}
}
public void addFreeSquares(ArrayList<Point> points) { // add all squares
for (int i = 0; i < GRID_WIDTH; i++) {
for (int j = 0; j < GRID_HEIGHT; j++) {
points.add(new Point(i, j));
}
}
// remove all pieces
for (Piece piece : game.getPieces()) {
if (!piece.isOut()) {
points.remove(piece.getLocation());
}
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (backStack.size() > 1) {
backStack.remove(backStack.size() - 1);
wrapFiles();
} else {
Intent intent = new Intent();
setResult(RESULT_CANCELED, intent);
finish();
}
return true;
}
return super.onKeyDown(keyCode, event);
}
@Override
public void onItemClick(AdapterView<?> aListView, View aView, int aPosition, long aID) {
final FileWrapper item = adapter.getItem(aPosition);
if (item.parentItem && backStack.get(backStack.size() - 1).parentIsBack) {
backStack.remove(backStack.size() - 1);
wrapFiles();
return;
} else if (item.dirSelectItem) {
finishWithPath(listedDirectory.getAbsolutePath());
return;
}
final File selected = item.parentItem ? listedDirectory.getParentFile() : item.file;
if (selected.isDirectory()) {
backStack.add(new BackStackItem(selected.getAbsolutePath(), !item.parentItem));
wrapFiles();
} else {
String filePath = selected.getAbsolutePath();
finishWithPath(filePath);
}
}