UICollectionViewFlowLayout subclass for precise horizontal & vertical cell alignment.

• Overview
• Alignment Options
• Installation
• Usage
• Visual Examples
• Requirements
• License

Drop-in replacement for UICollectionViewFlowLayout with granular alignment control. Unlike default flow layout (justified + center-aligned), this enables:

• Horizontal: left, right, leading, trailing, justified
• Vertical: top, center, bottom

dependencies: [
    .package(url: "https://github.com/mischa-hildebrand/AlignedCollectionViewFlowLayout.git", from: "1.0.0")
]

Copy AlignedCollectionViewFlowLayout.swift to your project.

import AlignedCollectionViewFlowLayout

let layout = AlignedCollectionViewFlowLayout(
    horizontalAlignment: .left,
    verticalAlignment: .top
)

collectionView.collectionViewLayout = layout

1. Add UICollectionViewFlowLayout to Collection View
2. Set Custom Class to AlignedCollectionViewFlowLayout
3. Configure alignment in code:

if let layout = collectionView.collectionViewLayout as? AlignedCollectionViewFlowLayout {
    layout.horizontalAlignment = .left
    layout.verticalAlignment = .top
}

layout.horizontalAlignment = .right
layout.verticalAlignment = .bottom
collectionView.collectionViewLayout.invalidateLayout()

Alignment	Preview
Left-aligned
Right-aligned
Justified
Top-aligned
Bottom-aligned
Centered

• iOS 16.0+
• Swift 6.0+
• Xcode 14.0+

See Docs/APPLE_MAIL_STYLE.md for Apple Mail-style email chip implementation.

MIT License - See source file header for full text.

Copyright © 2017 Mischa Hildebrand