UICollectionView ui label not displaying - ios

Question

I am new to iOS development and this is my first project that i am doing alone. i am trying to show the feed of my college's unofficial fb page using uicollectionview. I have been trying a lot of different things but nothing seems to work. The uilabel for the name is not being added to the collection view. However before i added the sizeForLabelAtIndexPath method which is to determine the size of the 2 ui labels and the height of the image to be displayed, the name label was working fine
UICollectionViewController.m file
- (void)viewDidLoad {
[super viewDidLoad];
self.title = #"DCE Speaks Up";
self.collectionView.backgroundColor = [UIColor colorWithWhite:0.95 alpha:1];
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = NO;
NSError *error= nil;
NSURL *feedURL = [NSURL URLWithString:#"https://graph.facebook.com/382057938566656/feed?fields=id,full_picture,message,story,created_time,link&access_token=1750413825187852%7CkUl9nlZFPvdGxGZX4WYabKKG2G4"];
NSData *jsonData = [NSData dataWithContentsOfURL:feedURL];
NSDictionary *dataDictionary= [NSJSONSerialization JSONObjectWithData:jsonData options:0 error:&error];
self.feedArray = [NSMutableArray array];
NSArray *feedTempArray = [dataDictionary objectForKey:#"data"]; //feedTempArray just used for parsing
for (NSDictionary *feedDictionary in feedTempArray) {
FacebookFeed *fbFeed =[FacebookFeed facebookFeedWithMessage:[feedDictionary objectForKey:#"message"]];
fbFeed.story = [feedDictionary objectForKey:#"story"];
fbFeed.imageURL = [NSURL URLWithString:[feedDictionary objectForKey:#"full_picture"]];
fbFeed.date = [feedDictionary objectForKey:#"created_time"];
fbFeed.sharedLink = [NSURL URLWithString:[feedDictionary objectForKey:#"link"]];
[self.feedArray addObject:fbFeed];
}
// Register cell classes
[self.collectionView registerClass:[FacebookCollectionViewCell class] forCellWithReuseIdentifier:reuseIdentifier];
// Do any additional setup after loading the view.
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
FacebookCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:reuseIdentifier forIndexPath:indexPath];
cell.feed = self.feedArray[indexPath.row];
cell.sizeDictionary = [self sizeForLabelAtIndexPath:indexPath.row collectionView:collectionView];
// Configure the cell
for (UIView *view in cell.contentView.subviews) {
if ([view isKindOfClass:[UILabel class]]) {
[view removeFromSuperview];
}else if ([view isKindOfClass:[UIImageView class]]){
[view removeFromSuperview];
}
}
cell.layer.shouldRasterize = YES;
cell.layer.rasterizationScale = [UIScreen mainScreen].scale;
return cell;
}
#pragma mark <UICollectionViewDelegateFlowLayout>
-(CGSize) collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath{
NSDictionary *sizeDictionary = [[NSDictionary alloc] init];
sizeDictionary = [self sizeForLabelAtIndexPath:indexPath.row collectionView:collectionView];
return CGSizeMake(self.view.frame.size.width - 20, [sizeDictionary[#"imageHeight"] floatValue] + [sizeDictionary[#"messageHeight"] floatValue] + [sizeDictionary[#"nameHeight"] floatValue]);
}
#pragma mark <UICollectionViewDelegate>
- (NSDictionary *) sizeForLabelAtIndexPath:(NSUInteger)indexPath collectionView:(UICollectionView *)collectionView{
FacebookFeed *feed = self.feedArray[indexPath];
CGSize nameSize = CGSizeFromString(#"DCE Speaks Up");
CGSize imageSize = CGSizeMake(0, 0);
if (feed.imageURL) {
imageSize = CGSizeMake(470, 394);
}
float height = 80;
NSString *string = #"";
if (feed.message) {
string = [feed.message stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
}else if (feed.story){
string = [feed.story stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
}
if (string) {
NSDictionary *attributes = #{
NSFontAttributeName : [UIFont preferredFontForTextStyle:UIFontTextStyleBody]
};
CGRect bodyFrame =
[string boundingRectWithSize:CGSizeMake(CGRectGetWidth(collectionView.bounds),
CGFLOAT_MAX)
options:(NSStringDrawingUsesLineFragmentOrigin)
attributes:attributes
context:nil];
height += ceilf(CGRectGetHeight(bodyFrame));
}
return #{ #"imageHeight" : #(imageSize.height) , #"messageHeight" : #(height) , #"nameHeight" : #(nameSize.height)};
}
Custom cell file
#implementation FacebookCollectionViewCell
- (instancetype)initWithFrame:(CGRect)frame{
self = [super initWithFrame:frame];
if (self)
{
self.contentView.backgroundColor = [UIColor whiteColor];
// change to our custom selected background view
self.imageView = [[UIImageView alloc] init];
self.messageLabel = [[UILabel alloc] init];
self.nameLabel = [[UILabel alloc] init];
}
return self;
}
-(void) setFeed:(FacebookFeed *)feed{
_feed = feed;
self.messageLabel.numberOfLines = 0;
self.messageLabel.lineBreakMode = 0;
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
NSData *data= [NSData dataWithContentsOfURL:feed.imageURL];
UIImage *theImage=[UIImage imageWithData:data];
dispatch_async(dispatch_get_main_queue(), ^{
self.imageView.image= theImage ;
});
});
if (feed.message) {
self.messageLabel.text = [[NSString alloc] initWithString:[feed.message stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]];
}else{
self.messageLabel.text = [[NSString alloc] initWithString:[feed.story stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]];
}
self.messageLabel.font = [UIFont fontWithName:#"ArialMT" size:11];
[self.messageLabel sizeToFit];
self.nameLabel.text = #"DCE Speaks Up";
[self.nameLabel setFont:[UIFont fontWithName:#"ArialMT" size:12]];
[self.nameLabel sizeToFit];
}
-(void) layoutSubviews{
NSLog(#"%#",self.feed);
self.nameLabel.frame = CGRectMake(10, 10, self.contentView.bounds.size.width, [self.sizeDictionary[#"nameHeight"] floatValue]);
float height = 200;
if (self.contentView.bounds.size.height - [self.sizeDictionary[#"messageHeight"] floatValue] -[self.sizeDictionary[#"nameHeight"] floatValue] >100) {
height = self.contentView.bounds.size.height - [self.sizeDictionary[#"messageHeight"] floatValue] -[self.sizeDictionary[#"nameHeight"] floatValue];
}
if (self.feed.imageURL) {
self.imageView.frame = CGRectMake(10, [self.sizeDictionary[#"messageHeight"] floatValue] +[self.sizeDictionary[#"nameHeight"] floatValue], self.contentView.bounds.size.width - 20,height);
self.messageLabel.frame = CGRectMake(10, [self.sizeDictionary[#"nameHeight"] floatValue] +10, self.contentView.bounds.size.width - 10, [self.sizeDictionary[#"messageHeight"] floatValue]);
[self.contentView addSubview:self.messageLabel];
[self.contentView addSubview:self.imageView];
}else{
self.messageLabel.frame = CGRectMake(10, [self.sizeDictionary[#"nameHeight"] floatValue], self.contentView.bounds.size.width - 10, [self.sizeDictionary[#"messageHeight"] floatValue]);
[self.contentView addSubview:self.messageLabel];
}
[self.contentView addSubview:self.nameLabel];
}
#end