A UICollectionViewFlowLayout sublass that allows you to set the alignment instead of being only justified.

Here is what the default flow layout looks like with:

Here is a left or right aligned NHAlignmentFlowLayout looks like:

UIFlowLayout defaults to a justified layout with no way to change this behavior. NHAlignmentFLowLayout comes to fill this need allowing you to set the alignment to left or right (in a vertical scrolling layout) and top or bottom (in a horizontal scrolling layout).

NHAlignmentFlowLayout makes one of the edges of your Cells aligned and keep a constant distance between all cells on one row.

NHAlignmentFLowLayout requires iOS 6 minimum and ARC.

Usage

Create the NHAlignmentFlowLayout as you would create a UICollectionViewFlowLayout and set it's alignment property.

NHAlignmentFlowLayout *layout = [[NHAlignmentFlowLayout alloc] init];
layout.scrollDirection = UICollectionViewScrollDirectionVertical;
layout.alignment = NHAlignmentTopLeftAligned;
layout.itemSize = CGSizeMake(90.0, 90.0);
layout.minimumInteritemSpacing = 5.0;
layout.minimumLineSpacing = 5.0;

self.collectionView.collectionViewLayout = layout;

There are 3 possible values for the alignment property:

• NHAlignmentJustified : this is the default value and is the standard flow layout.
• NHAlignmentTopLeftAligned : this is top-aligned for a horizontally scrolling layout and left-alined for a vertically scrolling layout.
• NHAlignmentBottomRightAligned : this is bottom-aligned for a horizontally scrolling layout and right-alined for a vertically scrolling layout.

Adding NHAlignmentFlowLayout to your project

NHAlignmentFlowLayout is available on CocoaPods. Add the following line to your Podfile:

pod 'NHAlignmentFlowLayout'

and then run pod install to install the dependency.