How to check UICollectionView has image - ios

Question

I have 4 UICollectionViewCell in which I want to make first 2 cell to have image in it mandatory. Sample code is as below. Below is a usecase:
There are 4 UICollectionViewCell if I click on each cell will open camera and we can either take a photo or select image from image gallery. How to know first 2 cell must have image. Looking for condition to check this logic.
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
Image *image = (Image *)self.defect.imageSet[indexPath.item];
ADRPhotoCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:NSStringFromClass([ADRPhotoCollectionViewCell class]) forIndexPath:indexPath];
cell.image = image.thumbnailImage ? image.thumbnailImage : nil;
cell.photoType = [self.defect defectPhotoTypeForIndex:indexPath];
return cell;
}
#pragma mark - UICollectionViewDelegate
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
Image *image = self.defect.imageSet[indexPath.item];
if (self.selectedImage != image) {
[self updateAnnotatedImage];
self.selectedImage = image;
[self.jotController clearAll];
[self updateUserInterface];
if (image.thumbnailImage) {
[self transitionImage:YES];
} else {
self.imageView.image = nil;
[self showCameraPicker];
}
} else if (!image.thumbnailImage) {
//clicked the + to add a new image
[self showCameraPicker];
}
}

Answer 1

You can check if there is an image in UIImageView or not by this way:
-(BOOL) checkImages {
for (int i=0, i<2 , i++) {
NSIndexPath *indexPath = [NSIndexPath indexPathForItem:i inSection:0];
ADRPhotoCollectionViewCell *cell = [collectionView cellForItemAtIndexPath:indexPath];
if (cell.imageView.image == nil || CGSizeEqualToSize(cell.imageView.image.size, CGSizeZero)) {
//there isn't any image or the image is empty
return NO;
}
}
return YES;
}