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https://github.com/arnauddorgans/InfiniteLayout
Horizontal and Vertical infinite scrolling feature for UICollectionView with Paging, NSProxy delegate, Reactive extension, SectionModel & AnimatableSectionModel support
https://github.com/arnauddorgans/InfiniteLayout
Last synced: about 1 month ago
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Horizontal and Vertical infinite scrolling feature for UICollectionView with Paging, NSProxy delegate, Reactive extension, SectionModel & AnimatableSectionModel support
- Host: GitHub
- URL: https://github.com/arnauddorgans/InfiniteLayout
- Owner: arnauddorgans
- License: mit
- Created: 2017-12-23T19:41:24.000Z (almost 7 years ago)
- Default Branch: master
- Last Pushed: 2021-07-10T17:22:43.000Z (over 3 years ago)
- Last Synced: 2024-07-03T02:50:34.411Z (5 months ago)
- Language: Swift
- Homepage:
- Size: 15.7 MB
- Stars: 516
- Watchers: 12
- Forks: 63
- Open Issues: 13
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
- awesome-ios - InfiniteLayout
- awesome - InfiniteLayout - Horizontal and Vertical infinite scrolling feature for UICollectionView with Paging, NSProxy delegate, Reactive extension, SectionModel & AnimatableSectionModel support (etc)
- awesome - InfiniteLayout - Horizontal and Vertical infinite scrolling feature for UICollectionView with Paging, NSProxy delegate, Reactive extension, SectionModel & AnimatableSectionModel support (etc)
README
# InfiniteLayout
[](https://travis-ci.org/arnauddorgans/InfiniteLayout)
[](http://cocoapods.org/pods/InfiniteLayout)
[](http://cocoapods.org/pods/InfiniteLayout)
[](http://cocoapods.org/pods/InfiniteLayout)
[](https://github.com/apple/swift-package-manager)
## Example
To run the example project, clone the repo, and run `pod install` from the Example directory first.
## Installation
### [CocoaPods](https://guides.cocoapods.org/using/using-cocoapods.html)
InfiniteLayout is available through [CocoaPods](http://cocoapods.org). To install
it, simply add the following line to your Podfile:
```ruby
pod 'InfiniteLayout'
```
### [Swift Package Manager](https://github.com/apple/swift-package-manager)
Create a `Package.swift` file.
```swift
// swift-tools-version:5.0
import PackageDescription
let package = Package(
name: "InfiniteLayoutTestProject",
dependencies: [
.package(url: "https://github.com/arnauddorgans/InfiniteLayout.git", from: "0.4.2")
],
targets: [
.target(name: "InfiniteLayoutTestProject", dependencies: ["InfiniteLayout"])
]
)
```
## Usage
```swift
@IBOutlet weak var collectionView: InfiniteCollectionView!
```
InfiniteCollectionView doesn't need any other delegate or dataSource,
just use UICollectionViewDataSource and UICollectionViewDelegate in the same way as you'll use it in any other UICollectionView.
InfiniteLayout provides 3 classes for infinite scrolling:
**InfiniteLayout**: an UICollectionViewFlowLayout
**InfiniteCollectionView**: an UICollectionView with InfiniteLayout
**InfiniteCollectionViewController**: an UICollectionViewController with InfiniteCollectionView
### IndexPath
InfiniteCollectionView may create fake indexPath,
To get the real indexPath call
```swift
func indexPath(from infiniteIndexPath: IndexPath) -> IndexPath
```
To get the real section call
```swift
func section(from infiniteSection: Int) -> Int
```
### Paging
InfiniteCollectionView provide a paging functionality, you can enable it by setting the **isItemPagingEnabled** flag to **true**
```swift
self.infiniteCollectionView.isItemPagingEnabled = true
```
When the **isItemPagingEnabled** flag is enabled you can adjust the deceleration rate by setting the **velocityMultiplier**, the more the value is high, the more the deceleration is long
```swift
self.infiniteCollectionView.velocityMultiplier = 1 // like scrollView with paging (default value)
self.infiniteCollectionView.velocityMultiplier = 500 // like scrollView without paging
```
When the **isItemPagingEnabled** flag is enabled you can set a **preferredCenteredIndexPath**, this value is used to calculate the preferred visible cell to center each time the collectionView will change its contentSize
```swift
self.infiniteCollectionView.preferredCenteredIndexPath = [0, 0] // center the cell at [0, 0] if visible (default value)
self.infiniteCollectionView.preferredCenteredIndexPath = nil // center the closest cell from center
```
### Delegate
InfiniteCollectionView provide an **infiniteDelegate** protocol used to get the centered IndexPath, usefull if you want to use an InfiniteCollectionView like a Picker.
```swift
func infiniteCollectionView(_ infiniteCollectionView: InfiniteCollectionView, didChangeCenteredIndexPath from: IndexPath?, to: IndexPath?)
```
### Rx
InfiniteCollectionView provide a subspec **InfiniteLayout/Rx**
```ruby
pod 'InfiniteLayout/Rx'
```
To use InfiniteCollectionView with RxSwift without conflicts between NSProxy
Use **RxInfiniteCollectionView** instead of **InfiniteCollectionView**
```swift
@IBOutlet weak var collectionView: RxInfiniteCollectionView!
```
RxInfiniteCollectionView provides 2 dataSources for SectionModel:
**RxInfiniteCollectionViewSectionedReloadDataSource** and **RxInfiniteCollectionViewSectionedAnimatedDataSource**
#### Binding:
Without sections:
```swift
// automatic cell dequeue
Observable.just(Array(0..<2))
.bind(to: infiniteCollectionView.rx.items(cellIdentifier: "cell", cellType: Cell.self, infinite: true)) { row, element, cell in
cell.update(index: row) // update your cell
}.disposed(by: disposeBag)
// custom cell dequeue
Observable.just(Array(0..<2))
.bind(to: infiniteCollectionView.rx.items(infinite: true)) { collectionView, row, element in
let indexPath = IndexPath(row: row, section: 0)
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! Cell // dequeue your cell
cell.update(index: row) // update your cell
return cell
}.disposed(by: disposeBag)
```
With sections:
```swift
let dataSource = RxInfiniteCollectionViewSectionedReloadDataSource>(configureCell: { dataSource, collectionView, indexPath, element in
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! Cell // dequeue your cell
cell.update(index: indexPath.row) // update your cell
return cell
})
Observable.just([
SectionModel(model: 0, items: Array(0..<2)),
SectionModel(model: 1, items: Array(0..<10))
])
.bind(to: infiniteCollectionView.rx.items(dataSource: dataSource))
.disposed(by: disposeBag)
```
for animations just use **RxInfiniteCollectionViewSectionedAnimatedDataSource** & **AnimatableSectionModel**
#### Centered IndexPath:
RxInfiniteCollectionView provide Reactive extension for **itemCentered** & **modelCentered**
```swift
infiniteCollectionView.rx.itemCentered
.asDriver()
.drive(onNext: { [unowned self] indexPath in
self.selectedView.update(index: indexPath.row) // update interface with indexPath
}).disposed(by: disposeBag)
infiniteCollectionView.rx.modelCentered(Int.self)
.asDriver()
.drive(onNext: { [unowned self] element in
self.selectedView.update(index: element) // update interface with model
}).disposed(by: disposeBag)
```
## Author
Arnaud Dorgans, [email protected]
## License
InfiniteLayout is available under the MIT license. See the LICENSE file for more info.