UIImageView transparent black on a cell bug (Objective-C) - objective-c

Question

I have a UIImageView installed on my cell, it is transparent black, but when I scroll the CollectionView and I raise my UIImageView but there is always more to transprence.
See picture :
1 - I is not even scroll
2 - After a scroll
My code :
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"pictureCell";
MSContestListCollectionViewCell *cell = (MSContestListCollectionViewCell *)[self.collectionView dequeueReusableCellWithReuseIdentifier:CellIdentifier forIndexPath:indexPath];
cell.titleContest.adjustsFontSizeToFitWidth = YES;
cell.titleContest.minimumScaleFactor = 0.5;
cell.pictureImageView.layer.cornerRadius = 5;
cell.pictureImageView.clipsToBounds = YES;
cell.titleView.layer.cornerRadius = 5;
cell.titleView.clipsToBounds = YES;
switch (_segmentedControl.selectedSegmentIndex) {
case 0: {
NSDictionary *searchResult = [self.readArray objectAtIndex:indexPath.item];
NSString *stringImage = [searchResult objectForKey:#"featuredImage"];
NSString *image = [NSString stringWithFormat:#"https://srv.mediaswapp.com/%#", stringImage];
[cell.pictureImageView sd_setImageWithURL:[NSURL URLWithString:image]
placeholderImage:[UIImage imageNamed:#"placeholder.png"]];
cell.statusContest.text = [searchResult objectForKey:#"status"];
if ([[searchResult objectForKey:#"status"] isEqualToString:#"PAUSE"]) {
cell.titleContest.text = [NSString stringWithFormat:#"Concours en pause"];
/*
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(cell.contentView.frame.origin.x, cell.contentView.frame.origin.y, cell.contentView.frame.size.width, cell.contentView.frame.size.height)];
view.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.8f];
view.layer.cornerRadius = 5;
view.clipsToBounds = YES;
[cell.contentView addSubview:view];
*/
UIImageView *imagecellPause = [[UIImageView alloc] initWithFrame:CGRectMake(cell.contentView.frame.origin.x, cell.contentView.frame.origin.y, cell.contentView.frame.size.width, cell.contentView.frame.size.height)];
UIImage *cellImage = [UIImage imageNamed:#"cell-pause.png"];
imagecellPause.image = cellImage;
[cell.contentView addSubview:imagecellPause];
UIImageView *imagePause = [[UIImageView alloc] initWithFrame:CGRectMake(69.5, 69.5, 25, 25)];
UIImage *image = [UIImage imageNamed:#"Pause Filled-50 (1).png"];
imagePause.image = image;
[cell.contentView addSubview:imagePause];
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, 90, 150, 50)];
label.textColor = [UIColor whiteColor];
label.font = [UIFont fontWithName:#"Avenir-Book" size:12];
label.text = [searchResult objectForKey:#"description"];
label.adjustsFontSizeToFitWidth = YES;
label.minimumScaleFactor = 0.5;
[cell.contentView addSubview:label];
UILabel *label2 = [[UILabel alloc] initWithFrame:CGRectMake(10, 105, 150, 50)];
label2.textColor = [UIColor whiteColor];
label2.font = [UIFont fontWithName:#"Avenir-Black" size:15];
label2.text = #"Concours en pause";
[cell.contentView addSubview:label2];
cell.titleView.hidden = YES;
} else {
cell.titleContest.text = [searchResult objectForKey:#"description"];
}
break;
}
case 1: {
NSDictionary *searchResult2 = [self.readArrayWinner objectAtIndex:indexPath.item];
NSString *stringImage = [searchResult2 objectForKey:#"featuredImage"];
NSString *image = [NSString stringWithFormat:#"https://srv.mediaswapp.com/%#", stringImage];
[cell.pictureImageView sd_setImageWithURL:[NSURL URLWithString:image]
placeholderImage:[UIImage imageNamed:#"placeholder.png"]];
cell.titleContest.text = [searchResult2 objectForKey:#"description"];
cell.statusContest.text = [searchResult2 objectForKey:#"status"];
NSLog(#"le gagnant : %#", [searchResult2 valueForKeyPath:#"winners.name"]);
break;
}
case 2: {
NSDictionary *searchResult3 = [self.readArrayPhotos objectAtIndex:indexPath.item];
NSString *stringImage = [searchResult3 objectForKey:#"featuredImage"];
NSString *image = [NSString stringWithFormat:#"https://srv.mediaswapp.com/%#", stringImage];
[cell.pictureImageView sd_setImageWithURL:[NSURL URLWithString:image]
placeholderImage:[UIImage imageNamed:#"placeholder.png"]];
cell.titleContest.text = [searchResult3 objectForKey:#"description"];
cell.statusContest.text = [searchResult3 objectForKey:#"status"];
break;
}
default:
break;
}
[_activity stopAnimating];
_label1.hidden = YES;
return cell;
}

Answer 1

Your CellForRowAtIndexPath should never contain addSubView, since everytime the cell is reloaded it will add the view. Thats why it keeps getting darker, it just adds view onto view.
Instead you should subclass your UICollectionViewCell and add the view in the subclass.