In ContentView.swift, declare the following variables: private var symbols = ["keyboard", "hifispeaker.fill", "printer.fill", "tv.fill", "desktopcomputer", "headphones", "tv.music.note", "mic", "plus.bubble", "video"] private var colors: [Color] = [.yellow, .purple, .green] priv...
我们有一个简单的 collectionView,它里面含有三个自定义的 cell 。我使用 NewsFeed.swift 文件作为这个新闻 collectionView 的主要数据源。我特别感兴趣的是 cellForItemAtIndexPath 方法,通过 NewsItem 枚举来区分 record 的类型,从而产生相对应的 cell : func collectionView(collectionView: UICollectionView, cellForIte...
首先,在 viewcontroller 上先加个UICollectionViewDelegateFlowLayout 如下: class TemplateCollectionViewController: UICollectionViewController,UICollectionViewDelegateFlowLayout { } 实现下面两个layout 的 delegate 方法即可 funccollectionView(_collectionView:UICollectionView,layout collectionViewLayout:UICollectionViewLayout,si...
(frame: view.bounds, collectionViewLayout: layout) collectionView.dataSource = self collectionView.register(UICollectionViewCell.self, forCellWithReuseIdentifier: "Cell") view.addSubview(collectionView) } // 实现UICollectionViewDataSource协议中的方法 func numberOfSections(in collectionView: UICollectionView)...
我们有一个简单的 collectionView,它里面含有三个自定义的cell。我使用NewsFeed.swift文件作为这个新闻 collectionView 的主要数据源。我特别感兴趣的是cellForItemAtIndexPath方法,通过NewsItem枚举来区分record的类型,从而产生相对应的cell: func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath index...
collection view is updated and the cell redrawn at the new size and location on the screen. To ensure that this happens, two methods need to be implemented in the MyFlowLayout.swift file for the center and scale properties that invalidate the layout in ...
今天用Swift CollectionView写一个页面,自定了一个Header和Footer View 运行报错,因为我使用的Reusable开源库注册Header和Footer collectionView.register(supplementaryViewType:SubscribeHeader.self,ofKind:UICollectionView.elementKindSectionHeader)collectionView.register(supplementaryViewType:SubscribeFooter.self,ofKind:UIColle...
If you’re unfamiliar with the basic concept of list in collection view, I highly recommend another article of mine called “Building a List with UICollectionView in Swift“. Reloading Reference Type Items Before getting into the reloading logic, let’s take a look at the diffable data source...
For the section identifier type,recipeListDataSourceusesRecipeListSection, an enumeration with a raw value of typeInt(in Swift,Intis hashable). Each enumeration case identifies a section of the collection view. In the sample, there’s only one section,main, whi...
今天用SwiftCollectionView写一个页面,自定了一个Header和Footer View 运行报错,因为我使用的Reusable开源库注册Header和Footer 代码语言:javascript 复制 collectionView.register(supplementaryViewType:SubscribeHeader.self,ofKind:UICollectionView.elementKindSectionHeader)collectionView.register(supplementaryViewType:SubscribeFoot...