expanding-collection

http://www.code4app.com/forum.php?mod=viewthread&tid=11428&extra=page%3D1%26filter%3Dsortid%26sortid%3D1

https://github.com/Ramotion/expanding-collection

A card peek/pop controller.

关于本项目

Ramotion, Inc 出品.
专注于移动应用程序和网站的自定义 UI 的设计和编码

[▶︎CONTACT OUR TEAM◀︎]

The iPhone mockup available here.

环境需求

• iOS 9.0+
• Xcode 8

安装方式

只需将 Source 文件夹添加到您的项目.

或者使用 CocoaPods ， Podfile 文件中添加以下一行:

pod 'expanding-collection', '~> 1.0.3' swift 3

pod 'expanding-collection', '~> 0.3.2' swift 2

or Carthage Cartfile 文件添加以下一行:

github "Ramotion/expanding-collection"

使用方法

import expanding_collection

Create CollectionViewCell

1. Create UICollectionViewCell inherit from BasePageCollectionCell (recommend create cell with xib file)

2. Adding FrontView

• add a view to YOURCELL.xib and connect it to @IBOutlet weak var frontContainerView: UIView!
• add width, height, centerX and centerY constraints (width and height constranints must equal cellSize)

• connect centerY constraint to @IBOutlet weak var frontConstraintY: NSLayoutConstraint!
• add any desired uiviews to frontView

1. Adding BackView

• repeat step 2 (connect outlets to @IBOutlet weak var backContainerView: UIView!, @IBOutlet weak var backConstraintY: NSLayoutConstraint!)

1. Cell example DemoCell

If set tag = 101 for any FrontView.subviews this view will be hidden during the transition animation

Create CollectionViewController

1. Create a UIViewController inheriting from ExpandingViewController

2. Register Cell and set Cell size:

override func viewDidLoad() {
    itemSize = CGSize(width: 214, height: 264)
    super.viewDidLoad()

    // register cell
    let nib = UINib(nibName: "NibName", bundle: nil)
    collectionView?.registerNib(nib, forCellWithReuseIdentifier: "CellIdentifier")
}

1. Add UICollectionViewDataSource methods

extension YourViewController {

  override func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return items.count
  }

  override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCellWithReuseIdentifier("CellIdentifier"), forIndexPath: indexPath)
    // configure cell
    return cell
  }
}

1. Open Cell animation

override func viewDidLoad() {
    itemSize = CGSize(width: 214, height: 264)
    super.viewDidLoad()

    // register cell
    let nib = UINib(nibName: "CellIdentifier", bundle: nil)
    collectionView?.registerNib(nib, forCellWithReuseIdentifier: String(DemoCollectionViewCell))
}

func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
    cell.cellIsOpen(!cell.isOpened)
}

if you use this delegates method:

func collectionView(collectionView: UICollectionView, willDisplayCell cell: UICollectionViewCell, forItemAtIndexPath indexPath: NSIndexPath)

func scrollViewDidEndDecelerating(scrollView: UIScrollView)

must call super method:

func collectionView(collectionView: UICollectionView, willDisplayCell cell: UICollectionViewCell, forItemAtIndexPath indexPath: NSIndexPath) {
  super.collectionView(collectionView: collectionView, willDisplayCell cell: cell, forItemAtIndexPath indexPath: indexPath)
  // code
}

func scrollViewDidEndDecelerating(scrollView: UIScrollView) {
  super.scrollViewDidEndDecelerating(scrollView: scrollView)
  // code
}

Transition animation

1. Create a UITableViewController inheriting from ExpandingTableViewController

2. Set header height default 236

override func viewDidLoad() {
    super.viewDidLoad()
    headerHeight = ***
}  

1. Call the push method in YourViewController to YourTableViewController

  if cell.isOpened == true {
    let vc: YourTableViewController = // ... create view controller  
    pushToViewController(vc)
  }

1. For back transition use popTransitionAnimation()