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PagingCollectionViewLayout

custom collection view layout that allows you to page by cell, not screen

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2yrs ago

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MIT

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paging-collection-view-layout

custom collection view layout that allows you to page by cell, not screen

installation

cocoapods

use cocoapods to install PagingCollectionViewLayout by adding it to your Podfile:

platform :ios, '9.0'
use_frameworks!
pod 'PagingCollectionViewLayout'
import PagingCollectionViewLayout

manual

add PagingCollectionViewLayout.swift to your project

usage

instantiate a layout property

let layout = PagingCollectionViewLayout()

set the following properties

layout.itemSize = 
layout.minimumLineSpacing = 
layout.scrollDirection = .horizontal

instantiate a collection view using the layout property

let collectionView = UICollectionView(frame: .zero, collectionViewLayout: layout)

for snappy scrolling set the following

collectionView.decelerationRate = .fast

note:

collectionView.isPagingEnabled = true

optional customization

vertical scrolling

layout.scrollDirection = .vertical

or since the default is vertical

layout.scrollDirection = .horizontal

section spacing

  • center the item in focus
  • allow the previous item to be visible

set the following property

layout.sectionInset = 
  • horizontal collection view - set left and right insets
  • vertical collection view - set top and bottom insets

skipping items

layout.velocityThresholdPerPage determines the velocity needed to skip an item (default = 2.0)

  • a non zero swipe velocity will result in the collection view scrolling to the prev/next item
  • the number of items skipped = swipe velocity / velocityThresholdPerPage

multiple items per page

layout.numberOfItemsPerPage = 2

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