Fix rendering bug in UICollectionViewFlowLayout as described here: http://stackoverflow.com/questions/12927027/uicollectionview-flowlayout-not-wrapping-cells-correctly-ios

NDCollectionViewFlowLayout.h

//  Created by Nick Snyder on 11/13/12.
//  https://gist.github.com/nicksnyder/4075682
//  http://stackoverflow.com/questions/12927027/uicollectionview-flowlayout-not-wrapping-cells-correctly-ios
//  NDCollectionViewFlowLayout.h
@interface NDCollectionViewFlowLayout : UICollectionViewFlowLayout

@end

NDCollectionViewFlowLayout.m

//  Created by Nick Snyder on 11/13/12.
//  https://gist.github.com/nicksnyder/4075682
//  http://stackoverflow.com/questions/12927027/uicollectionview-flowlayout-not-wrapping-cells-correctly-ios
//  NDCollectionViewFlowLayout.m
#import "NDCollectionViewFlowLayout.h"

@implementation NDCollectionViewFlowLayout

- (NSArray *)layoutAttributesForElementsInRect:(CGRect)rect {
  NSArray *attributes = [super layoutAttributesForElementsInRect:rect];
  NSMutableArray *newAttributes = [NSMutableArray arrayWithCapacity:attributes.count];
  for (UICollectionViewLayoutAttributes *attribute in attributes) {
    if ((attribute.frame.origin.x + attribute.frame.size.width <= self.collectionViewContentSize.width) &&
        (attribute.frame.origin.y + attribute.frame.size.height <= self.collectionViewContentSize.height)) {
      [newAttributes addObject:attribute];
    }
  }
  return newAttributes;
}

@end

Relevant SO article: http://stackoverflow.com/questions/12927027/uicollectionview-flowlayout-not-wrapping-cells-correctly-ios

@steipete Is this fix in PSTCollectionView ?

Thanks very much!

I had to take into account the section inset in order for it to work for me:

- (NSArray *)layoutAttributesForElementsInRect:(CGRect)rect {
    NSArray *attributes = [super layoutAttributesForElementsInRect:rect];
    NSMutableArray *newAttributes = [NSMutableArray arrayWithCapacity:attributes.count];
    for (UICollectionViewLayoutAttributes *attribute in attributes) {
        if ((attribute.representedElementCategory != UICollectionElementCategoryCell) || // always include everything that's not a cell
            ((attribute.frame.origin.x + attribute.frame.size.width <= (self.collectionViewContentSize.width - self.sectionInset.right)) &&
             (attribute.frame.origin.y + attribute.frame.size.height <= (self.collectionViewContentSize.height - self.sectionInset.bottom))))
        {
            [newAttributes addObject:attribute];
        }
    }
    return newAttributes;
}

Wonderful~

How can I implement this? I already made this and it is not called. Where should I call this? Thanks in advance

How can I implement this? I already made this and it is not called. Where should I call this? Thanks in advance

Click here for set collectionview flow layout