Comments (3)
The sample code you're showing here returns a random size, and thus a different size every time the prefferedSizeForItemAtIndexPath
method is called. The prefferedSizeForItemAtIndexPath
is called multiple times throughout the layout process and expects a consistent size to be returned for each index path.
If you want to test with random sizes you should store them in an array and implement the delegate method like this
return [[self.sizes objectAtIndex:indexPath.item] CGSizeValue];
Also make sure to set the contentMode on the cell's image view to aspect fill in this case.
from nhbalancedflowlayout.
I've replicated your example with this code and it works perfectly:
- (id)initWithCoder:(NSCoder *)aDecoder
{
self = [super initWithCoder:aDecoder];
if (self) {
_sizes = [NSMutableArray array];
NSMutableArray *images = [[NSMutableArray alloc] init];
for (int i = 1; i <= NUMBER_OF_IMAGES; i++) {
NSString *imageName = [NSString stringWithFormat:@"photo-%02d.jpg", i];
UIImage *image = [UIImage imageNamed:imageName];
[images addObject:image];
CGSize size = [image size];
size.width += arc4random()%2000;
size.height += arc4random()%2000;
[_sizes addObject:[NSValue valueWithCGSize:size]];
}
_images = [images copy];
}
return self;
}
#pragma mark - UICollectionViewFlowLayoutDelegate
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(NHBalancedFlowLayout *)collectionViewLayout preferredSizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
return [[self.sizes objectAtIndex:indexPath.item] CGSizeValue];
}
from nhbalancedflowlayout.
Finally I found the problem - wrong constraints in my custom cell .xib, absolutely my fault.
This is a great control! Thank you for your time.
from nhbalancedflowlayout.
Related Issues (20)
- Crash HOT 5
- Asynchronously loading preferredSizeForItemAtIndexPath
- maximumRowHeight or item height? HOT 5
- Adding new items to the collection rearranges old cells HOT 3
- Images are upscaled during the layout HOT 4
- Change back layout from UICollectionFlowLayout to NHBalancedFlowLayout cause crashes HOT 1
- Add supplementary views HOT 1
- How to use NHBalancedFlowLayout HOT 2
- Layout issue with xcode 6 GM HOT 12
- Images does not fill cell frame HOT 3
- Not working without Xib file HOT 4
- Randomize cell size HOT 1
- Bug on reload
- how i can force it to make 2 2 2
- Load images remotely HOT 1
- Crash
- Performance on large camera roll HOT 2
- i need fix row height with horizontal scroll, but its not working HOT 1
- Huge amount of items
- Wrong collectionViewContentSize HOT 1
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