GLIDING COLLECTION

A smooth, flowing, customizable decision for a UICollectionView Swift Controller

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Requirements

• iOS 8.0+
• Xcode 8
• Swift 3 (<= 1.0.3)
• Swift 4 (>= 1.1.0)
• Swift 4.2 (~> 2.0)

Installation

You can install GlidingCollection in several ways:

• Add source files to your project.

• Use CocoaPods:

pod 'GlidingCollection'

• Use Carthage:

github "Ramotion/gliding-collection"

How to use

• Create a view controller class:

import GlidingCollection

class ViewController: UIViewController {
  let items = ["gloves", "boots", "bindings", "hoodie"]
}

• Drag a UIView onto the canvas. Change it's class to GlidingCollection and use autolayout constraints.

• Connect this view to your view controller class as an @IBOutlet.

@IBOutlet var glidingCollection: GlidingCollection!

• Make your view controller conform to GlidingCollectionDatasource. It's very similar to the UITableView or UICollectionView datasource protocols that you know:

extension ViewController: GlidingCollectionDatasource {

  func numberOfItems(in collection: GlidingCollection) -> Int {
    return items.count
  }

  func glidingCollection(_ collection: GlidingCollection, itemAtIndex index: Int) -> String {
    return "– " + items[index]
  }

}

• Make your view controller conform to UICollectionViewDatasource:

extension ViewController: UICollectionViewDatasource {
  
  func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    let section = glidingView.expandedItemIndex // Value of expanded section.
    return images[section].count
  }
  
  func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    guard let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Cell", for: indexPath) as? CollectionCell else { return UICollectionViewCell() }
    // Configure and return your cell.
    return cell
  }
  
}

Customize

You can customize the appearance of GlidingCollection by overriding GlidingConfig's shared instance with your own.

var config = GlidingConfig.shared
config.buttonsFont = UIFont.boldSystemFont(ofSize: 22)
config.activeButtonColor = .black
config.inactiveButtonsColor = .lightGray
GlidingConfig.shared = config

🗒 All parameters with their descriptions are listed in GlidingConfig.

Notes

There is a GlidingCollectionDelegate protocol which can notify you when item in GlidingCollection didSelect, willExpand and didExpand.

If you want to achieve a parallax effect on a horizontal cards stack, you need to place your parallax view in a cell's contentView and set its tag to 99.

There is a kGlidingCollectionParallaxViewTag constant if you want to layout a cell in code.

imageView.tag = kGlidingCollectionParallaxViewTag

📄 License

Gliding Collection is released under the MIT license. See LICENSE for details.

This library is a part of a selection of our best UI open-source projects.

If you use the open-source library in your project, please make sure to credit and backlink to www.ramotion.com

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