mirror of
https://github.com/Instagram/IGListKit
synced 2026-05-08 10:00:43 +00:00
f6e088acd8
Summary: Adding a working range example to the example app. This example: - Displays a list of images downloaded from unsplash.it - Create 20 uniquely-random sized objects - When section controllers enter the range, create a data task to download the image - When finished, store image in `downloadedImage` - Set in cell if cell is visible - Don't create task if already downloaded or task created - Cancel task when section controller is destroyed - Show a spinner cell while downloading the image Fixes #84 - [x] All tests pass. Demo project builds and runs. - [x] I have reviewed the [contributing guide](https://github.com/Instagram/IGListKit/blob/master/CONTRIBUTING.md) Closes https://github.com/Instagram/IGListKit/pull/89 Differential Revision: D4050210 Pulled By: rnystrom fbshipit-source-id: 628a777fa819dccd9d9f4f58646cdf72fb4bc65c
62 lines
2.4 KiB
Swift
62 lines
2.4 KiB
Swift
/**
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Copyright (c) 2016-present, Facebook, Inc. All rights reserved.
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The examples provided by Facebook are for non-commercial testing and evaluation
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purposes only. Facebook reserves all rights not expressly granted.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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import UIKit
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import IGListKit
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class DemosViewController: UIViewController, IGListAdapterDataSource {
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lazy var adapter: IGListAdapter = {
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return IGListAdapter(updater: IGListAdapterUpdater(), viewController: self, workingRangeSize: 0)
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}()
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let collectionView = IGListCollectionView(frame: CGRect.zero, collectionViewLayout: UICollectionViewFlowLayout())
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let demos: [DemoItem] = [
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DemoItem(name: "Tail Loading", controllerClass: LoadMoreViewController.self),
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DemoItem(name: "Search Autocomplete", controllerClass: SearchViewController.self),
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DemoItem(name: "Mixed Data", controllerClass: MixedDataViewController.self),
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DemoItem(name: "Nested Adapter", controllerClass: NestedAdapterViewController.self),
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DemoItem(name: "Empty View", controllerClass: EmptyViewController.self),
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DemoItem(name: "Single Section Controller", controllerClass: SingleSectionViewController.self),
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DemoItem(name: "Working Range", controllerClass: WorkingRangeViewController.self)
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]
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override func viewDidLoad() {
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super.viewDidLoad()
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title = "Demos"
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view.addSubview(collectionView)
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adapter.collectionView = collectionView
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adapter.dataSource = self
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}
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override func viewDidLayoutSubviews() {
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super.viewDidLayoutSubviews()
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collectionView.frame = view.bounds
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}
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//MARK: IGListAdapterDataSource
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func objects(for listAdapter: IGListAdapter) -> [IGListDiffable] {
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return demos
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}
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func listAdapter(_ listAdapter: IGListAdapter, sectionControllerFor object: Any) -> IGListSectionController {
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return DemoSectionController()
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}
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func emptyView(for listAdapter: IGListAdapter) -> UIView? {
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return nil
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}
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}
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