When refreshing collectionView, it crashes because it doesnt update the numberOfItemsInSection - ios

Question

I have refresh method when user pulls down and it seems like it doesn't update the array count and just crashes:
Here is the crash:
*** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayM objectAtIndex:]: index 9 beyond bounds [0 .. 8]'
Here is my code:
Query Data: (used to refresh as well)
- (void) queryData
{
PFObject *queryPhotos = self.userInformationObject;
PFQuery *query = [PFQuery queryWithClassName:#"Photo"];
[query whereKey:#"userTookPhoto" equalTo:queryPhotos];
[query orderByAscending:#"createdAt"];
[query findObjectsInBackgroundWithBlock:^(NSArray * _Nullable objects, NSError * _Nullable error) {
if (!error) {
imageFilesArray = [[NSArray alloc] initWithArray:objects];
[self.myCollectionView reloadData];
[self.refreshControl endRefreshing];
}
}];
}
CellForItemAtIndexPath
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
static NSString * const reuseIdentifier = #"imageCell";
imageCollectionCell *cell = [self.myCollectionView dequeueReusableCellWithReuseIdentifier:reuseIdentifier forIndexPath:indexPath];
// Configure the cell
cell.layer.borderColor = [UIColor grayColor].CGColor;
cell.layer.borderWidth = 0.5;
cell.layer.cornerRadius = 7.0f;
cell.clipsToBounds = YES;
PFObject *imageObject = [imageFilesArray objectAtIndex:indexPath.row];
PFFile *imageFile = [imageObject objectForKey:#"image"];
[imageFile getDataInBackgroundWithBlock:^(NSData * _Nullable data, NSError * _Nullable error) {
if (!error) {
cell.imageViewCell.image = [UIImage imageWithData:data];
}
else{
NSLog(#"Fail");
}
} progressBlock:^(int percentDone) {
}];
return cell;
}
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView {
//#warning Incomplete implementation, return the number of sections
return 1;
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
//#warning Incomplete implementation, return the number of items
return [imageFilesArray count];
}
This is all the code relating to the refresh, and showing the cells, I dont know whats going wrong, hope someone has an answer.
Thanks in advance.

Answer 1

Try below code.
- (void) queryData
{
[self.refreshControl endRefreshing];
PFObject *queryPhotos = self.userInformationObject;
PFQuery *query = [PFQuery queryWithClassName:#"Photo"];
[query whereKey:#"userTookPhoto" equalTo:queryPhotos];
[query orderByAscending:#"createdAt"];
[query findObjectsInBackgroundWithBlock:^(NSArray * _Nullable objects, NSError * _Nullable error) {
if (!error) {
imageFilesArray = [[NSArray alloc] initWithArray:objects];
}
}];
[self.myCollectionView reloadData];
}