- 增加
UISheetPresentationController
,通过它可以控制 Modal 出来的 UIViewController 的显示大小,且可以通过拖拽手势在不同大小之间进行切换。只需要在跳转的目标 UIViewController 做如下处理:
if let presentationController = presentationController as? UISheetPresentationController {
// 显示时支持的尺寸
presentationController.detents = [.medium(), .large()]
// 显示一个指示器表示可以拖拽调整大小
presentationController.prefersGrabberVisible = true
}
-
UIButton
支持更多配置。UIButton.Configuration
是一个新的结构体,它指定按钮及其内容的外观和行为。它有许多与按钮外观和内容相关的属性,如cornerStyle、baseForegroundColor、baseBackgroundColor、buttonSize、title、image、subtitle、titlePadding、imagePadding、contentInsets、imagePlacement
等。
// Plain
let plain = UIButton(configuration: .plain(), primaryAction: nil)
plain.setTitle("Plain", for: .normal)
// Gray
let gray = UIButton(configuration: .gray(), primaryAction: nil)
gray.setTitle("Gray", for: .normal)
// Tinted
let tinted = UIButton(configuration: .tinted(), primaryAction: nil)
tinted.setTitle("Tinted", for: .normal)
// Filled
let filled = UIButton(configuration: .filled(), primaryAction: nil)
filled.setTitle("Filled", for: .normal)
- 推出
CLLocationButton
用于一次性定位授权,该内容内置于CoreLocationUI
模块,但如果需要获取定位的详细信息仍然需要借助于CoreLocation
。
let locationButton = CLLocationButton()
// 文字
locationButton.label = .currentLocation
locationButton.fontSize = 20
// 图标
locationButton.icon = .arrowFilled
// 圆角
locationButton.cornerRadius = 10
// tint
locationButton.tintColor = UIColor.systemPink
// 背景色
locationButton.backgroundColor = UIColor.systemGreen
// 点击事件,应该在在其中发起定位请求
locationButton.addTarget(self, action: #selector(getCurrentLocation), for: .touchUpInside)
- URLSession 推出支持 async/await 的 API,包括获取数据、上传与下载。
let session = URLSession.shared
// 加载数据
let (data, response) = try await session.data(from: url)
// 下载
let (localURL, _) = try await session.download(from: url)
// 上传
let (_, response) = try await session.upload(for: request, from: data)
- 系统图片支持多个层,支持多种渲染模式。
// hierarchicalColor:多层渲染,透明度不同
let config = UIImage.SymbolConfiguration(hierarchicalColor: .systemRed)
let image = UIImage(systemName: "square.stack.3d.down.right.fill", withConfiguration: config)
// paletteColors:多层渲染,设置不同风格
let config2 = UIImage.SymbolConfiguration(paletteColors: [.systemRed, .systemGreen, .systemBlue])
let image2 = UIImage(systemName: "person.3.sequence.fill", withConfiguration: config2)
- UINavigationBar、UIToolbar 和 UITabBar 设置颜色,需要使用 UIBarAppearance APIs。
// UINavigationBar
let navigationBarAppearance = UINavigationBarAppearance()
navigationBarAppearance.backgroundColor = .red
navigationController?.navigationBar.scrollEdgeAppearance = navigationBarAppearance
navigationController?.navigationBar.standardAppearance = navigationBarAppearance
// UIToolbar
let toolBarAppearance = UIToolbarAppearance()
toolBarAppearance.backgroundColor = .blue
navigationController?.toolbar.scrollEdgeAppearance = toolBarAppearance
navigationController?.toolbar.standardAppearance = toolBarAppearance
// UITabBar
let tabBarAppearance = UITabBarAppearance()
toolBarAppearance.backgroundColor = .purple
tabBarController?.tabBar.scrollEdgeAppearance = tabBarAppearance
tabBarController?.tabBar.standardAppearance = tabBarAppearance
- UITableView 新增了属性 sectionHeaderTopPadding,会给每一个section 的 header 增加一个默认高度。
tableView.sectionHeaderTopPadding = 0
- UIImage 新增了几个调整尺寸的方法。
// preparingThumbnail
UIImage(named: "sv.png")?.preparingThumbnail(of: CGSize(width: 200, height: 100))
// prepareThumbnail,闭包中直接获取调整后的UIImage
UIImage(named: "sv.png")?.prepareThumbnail(of: CGSize(width: 200, height: 100)) { image in
// 需要回到主线程更新UI
}
// byPreparingThumbnail
await UIImage(named: "sv.png")?.byPreparingThumbnail(ofSize: CGSize(width: 100, height: 100))