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开发者注意！盘一盘 iOS 14 中 Swift 和 SwiftUI 的使用情况
以下为译文：
在2014年的全球开发者大会上，苹果推出了Swift。这些年来，我一直在分析iOS，统计有多少内置应用程序在使用Swift。2015年发布的iOS 9包含一个使用Swift编写的应用程序：计算器。从那以后，每个iOS版本的发布中，使用Swift编写的应用程序数量越来越多：iOS 10.1、iOS 11.1、iOS 12.0以及最后的iOS 13.1。
现今，苹果推出了iOS 14，下面我们一起来看看自iOS 13以来，使用Swift编写的应用程序数量又增加了多少。一年前，在2019年的全球开发者大会上，苹果推出了SwiftUI。在本文中，我还将尝试评估哪些内置应用程序正在使用这个最新的UI框架。
iOS 14中Swift的使用情况
iOS14.0包含351个使用Swift编写的二进制文件和框架。请注意，这些二进制文件可能只包含一行Swift代码，不一定完全用Swift编写。该列表是以面向iPhone 11 Pro Max的iOS 14.0（18A373）为基础编制的：
/Applications/ActivityMessagesApp.app/PlugIns/ActivityMessagesExtension.appex/ActivityMessagesExtension/Applications/AppStore.app/AppStore/Applications/AppStore.app/PlugIns/ProductPageExtension.appex/ProductPageExtension/Applications/AppStore.app/PlugIns/SubscribePageExtension.appex/SubscribePageExtension/Applications/BusinessExtensionsWrapper.app/PlugIns/Business.appex/Business/Applications/Diagnostics.app/Diagnostics/Applications/FindMy.app/FindMy/Applications/FindMy.app/PlugIns/FindMyNotificationsContent.appex/FindMyNotificationsContent/Applications/FindMy.app/PlugIns/FindMyNotificationsService.appex/FindMyNotificationsService/Applications/FindMy.app/PlugIns/FindMySiriIntents.appex/FindMySiriIntents/Applications/FTMInternal-4.app/FTMInternal-4/Applications/GameCenterUIService.app/PlugIns/GameCenterMessageExtension.appex/GameCenterMessageExtension/Applications/Health.app/Health/Applications/HealthENBuddy.app/HealthENBuddy/Applications/HealthENLauncher.app/HealthENLauncher/Applications/InCallService.app/InCallService/Applications/Magnifier.app/Magnifier/Applications/MobilePhone.app/MobilePhone/Applications/MobileSlideShow.app/PlugIns/PhotosReliveWidget.appex/PhotosReliveWidget/Applications/MobileTimer.app/PlugIns/WorldClockWidget.appex/WorldClockWidget/Applications/SharingViewService.app/SharingViewService/Applications/Sidecar.app/PlugIns/ContinuityCamera.appex/ContinuityCamera/Applications/Sidecar.app/PlugIns/ContinuityDisplay.appex/ContinuityDisplay/Applications/Sidecar.app/PlugIns/ContinuityMarkup.appex/ContinuityMarkup/Applications/Sidecar.app/PlugIns/ContinuitySignature.appex/ContinuitySignature/Applications/Sidecar.app/PlugIns/ContinuitySketch.appex/ContinuitySketch/Applications/Sidecar.app/Sidecar/Applications/SleepLockScreen.app/SleepLockScreen/private/var/staged_system_apps/AppleTV.app/PlugIns/TVWidgetExtension.appex/TVWidgetExtension/private/var/staged_system_apps/Books.app/Books/private/var/staged_system_apps/Books.app/Frameworks/BookCore.framework/BookCore/private/var/staged_system_apps/Books.app/Frameworks/JSApp.framework/JSApp/private/var/staged_system_apps/Calculator.app/Calculator/private/var/staged_system_apps/Files.app/Files/private/var/staged_system_apps/Fitness.app/Fitness/private/var/staged_system_apps/Fitness.app/PlugIns/FitnessWidget.appex/FitnessWidget/private/var/staged_system_apps/Maps.app/PlugIns/GeneralMapsWidget.appex/GeneralMapsWidget/private/var/staged_system_apps/Measure.app/Measure/private/var/staged_system_apps/MobileCal.app/PlugIns/CalendarWidgetExtension.appex/CalendarWidgetExtension/private/var/staged_system_apps/MobileNotes.app/MobileNotes/private/var/staged_system_apps/MobileNotes.app/PlugIns/com.apple.mobilenotes.SharingExtension.appex/com.apple.mobilenotes.SharingExtension/private/var/staged_system_apps/MobileNotes.app/PlugIns/com.apple.mobilenotes.WidgetExtension.appex/com.apple.mobilenotes.WidgetExtension/private/var/staged_system_apps/Music.app/Frameworks/MusicApplication.framework/MusicApplication/private/var/staged_system_apps/Music.app/Frameworks/MusicApplication.framework/XPCServices/MusicScriptUpdateService.xpc/MusicScriptUpdateService/private/var/staged_system_apps/Music.app/Music/private/var/staged_system_apps/Music.app/PlugIns/MediaPicker.appex/MediaPicker/private/var/staged_system_apps/Music.app/PlugIns/MusicMessagesApp.appex/MusicMessagesApp/private/var/staged_system_apps/Music.app/PlugIns/MusicNotificationContentExtension.appex/MusicNotificationContentExtension/private/var/staged_system_apps/Music.app/PlugIns/MusicWidgets.appex/MusicWidgets/private/var/staged_system_apps/Music.app/PlugIns/PlaybackIntent.appex/PlaybackIntent/private/var/staged_system_apps/News.app/PlugIns/NewsAudioExtension.appex/NewsAudioExtension/private/var/staged_system_apps/News.app/PlugIns/NewsTag.appex/NewsTag/private/var/staged_system_apps/News.app/PlugIns/NewsToday2.appex/NewsToday2/private/var/staged_system_apps/News.app/PlugIns/NewsTodayIntents.appex/NewsTodayIntents/private/var/staged_system_apps/Podcasts.app/Frameworks/AppStoreKit.framework/AppStoreKit/private/var/staged_system_apps/Podcasts.app/Frameworks/NowPlayingUI.framework/NowPlayingUI/private/var/staged_system_apps/Podcasts.app/Frameworks/PodcastsStoreUI.framework/PodcastsStoreUI/private/var/staged_system_apps/Podcasts.app/PlugIns/PodcastsClassKitExtension.appex/PodcastsClassKitExtension/private/var/staged_system_apps/Podcasts.app/PlugIns/PodcastsWidget.appex/PodcastsWidget/private/var/staged_system_apps/Podcasts.app/Podcasts/private/var/staged_system_apps/Reminders.app/PlugIns/RemindersIntentsExtension.appex/RemindersIntentsExtension/private/var/staged_system_apps/Reminders.app/PlugIns/RemindersIntentsUIExtension.appex/RemindersIntentsUIExtension/private/var/staged_system_apps/Reminders.app/PlugIns/RemindersSharingExtension.appex/RemindersSharingExtension/private/var/staged_system_apps/Reminders.app/PlugIns/RemindersSpotlightIndexExtension.appex/RemindersSpotlightIndexExtension/private/var/staged_system_apps/Reminders.app/PlugIns/RemindersWidgetExtension.appex/RemindersWidgetExtension/private/var/staged_system_apps/Reminders.app/Reminders/private/var/staged_system_apps/SequoiaTranslator.app/PlugIns/CacheDeleteExtension.appex/CacheDeleteExtension/private/var/staged_system_apps/SequoiaTranslator.app/SequoiaTranslator/private/var/staged_system_apps/Shortcuts.app/Shortcuts/private/var/staged_system_apps/Stocks.app/PlugIns/StocksDetailIntents.appex/StocksDetailIntents/private/var/staged_system_apps/Stocks.app/PlugIns/StocksWidget.appex/StocksWidget/private/var/staged_system_apps/Stocks.app/Stocks/private/var/staged_system_apps/Tips.app/PlugIns/TipsSwift.appex/TipsSwift/private/var/staged_system_apps/Weather.app/PlugIns/WeatherWidget.appex/WeatherWidget[...]检测使用了SwiftUI的二进制文件
于2019年的全球开发者大会上发布的 SwiftUI 是一个全新的框架，可以使用 Swift 构建用户界面。这样，使用 SwiftUI 生成的二进制文件就会使用 Swift。我们能不能列出所有使用了 SwiftUI 的应用程序？
我曾经开发过一个发 iOS 14的小部件 Clatters 3.0，我注意到这些小部件链接到了
/System/Library/Frameworks/SwiftUI.framework/Versions/A/SwiftUI。
只需稍微调整一下，检测 Swift 的脚本就可以转变为检测 SwiftUI：
otool -L $1 2>/dev/null | grep -o /System/Library/Frameworks/SwiftUI.framework/SwiftUI | wc -liOS13.7中SwiftUI的使用情况
到目前为止，我还没有发布 iOS 中 SwiftUI 的应用程序列表。作为参考，我建立了如下iOS 13.7的列表。毫不奇怪，iOS 13.7仅包含少量依赖SwiftUI的二进制文件：
/Applications/SharingViewService.app/SharingViewService/System/Library/Frameworks/SwiftUI.framework/SwiftUI/System/Library/PrivateFrameworks/Settings/LegalAndRegulatorySettingsPrivate.framework/LegalAndRegulatorySettingsPrivate/System/Library/PrivateFrameworks/Settings/SettingsUIKitPrivate.framework/SettingsUIKitPrivate/System/Library/PrivateFrameworks/Settings/WallpaperSettings.framework/WallpaperSettings/System/Library/PrivateFrameworks/VideosUI.framework/VideosUIiOS14.0中SwiftUI的使用情况
iOS14.0包含更多使用了SwiftUI二进制文件。主要原因无疑是WidgetKit的推出，这是第一个公共的SwiftUI专用框架。iOS 14中的每个小部件都出现在该列表中。iOS 14的另一个闪亮的新功能是Translate应用程序，它似乎也是用SwiftUI构建的。
/Applications/MobilePhone.app/MobilePhone/Applications/MobileSlideShow.app/PlugIns/PhotosReliveWidget.appex/PhotosReliveWidget/Applications/MobileTimer.app/PlugIns/WorldClockWidget.appex/WorldClockWidget/Applications/SharingViewService.app/SharingViewService/Applications/SleepLockScreen.app/SleepLockScreen/private/var/staged_system_apps/AppleTV.app/PlugIns/TVWidgetExtension.appex/TVWidgetExtension/private/var/staged_system_apps/Fitness.app/PlugIns/FitnessWidget.appex/FitnessWidget/private/var/staged_system_apps/Maps.app/PlugIns/GeneralMapsWidget.appex/GeneralMapsWidget/private/var/staged_system_apps/MobileCal.app/PlugIns/CalendarWidgetExtension.appex/CalendarWidgetExtension/private/var/staged_system_apps/MobileNotes.app/PlugIns/com.apple.mobilenotes.WidgetExtension.appex/com.apple.mobilenotes.WidgetExtension/private/var/staged_system_apps/Music.app/PlugIns/MusicWidgets.appex/MusicWidgets/private/var/staged_system_apps/News.app/PlugIns/NewsTag.appex/NewsTag/private/var/staged_system_apps/News.app/PlugIns/NewsToday2.appex/NewsToday2/private/var/staged_system_apps/Podcasts.app/PlugIns/PodcastsWidget.appex/PodcastsWidget/private/var/staged_system_apps/Reminders.app/PlugIns/RemindersWidgetExtension.appex/RemindersWidgetExtension/private/var/staged_system_apps/SequoiaTranslator.app/SequoiaTranslator/private/var/staged_system_apps/Shortcuts.app/Shortcuts/private/var/staged_system_apps/Stocks.app/PlugIns/StocksWidget.appex/StocksWidget/private/var/staged_system_apps/Tips.app/PlugIns/TipsSwift.appex/TipsSwift/private/var/staged_system_apps/Weather.app/PlugIns/WeatherWidget.appex/WeatherWidget/System/Library/Frameworks/_AuthenticationServices_SwiftUI.framework/_AuthenticationServices_SwiftUI/System/Library/Frameworks/_AVKit_SwiftUI.framework/_AVKit_SwiftUI/System/Library/Frameworks/_HomeKit_SwiftUI.framework/_HomeKit_SwiftUI/System/Library/Frameworks/_MapKit_SwiftUI.framework/_MapKit_SwiftUI/System/Library/Frameworks/_QuickLook_SwiftUI.framework/_QuickLook_SwiftUI/System/Library/Frameworks/_SceneKit_SwiftUI.framework/_SceneKit_SwiftUI/System/Library/Frameworks/_SpriteKit_SwiftUI.framework/_SpriteKit_SwiftUI/System/Library/Frameworks/_StoreKit_SwiftUI.framework/_StoreKit_SwiftUI/System/Library/Frameworks/SwiftUI.framework/SwiftUI/System/Library/Frameworks/UIKit.framework/PlugIns/com.apple.UIKit.ColorPicker.appex/com.apple.UIKit.ColorPicker/System/Library/Frameworks/WidgetKit.framework/WidgetKit/System/Library/PrivateFrameworks/CalendarWidget.framework/CalendarWidget/System/Library/PrivateFrameworks/ChronoCore.framework/ChronoCore/System/Library/PrivateFrameworks/ChronoCore.framework/Support/chronod/System/Library/PrivateFrameworks/ChronoKit.framework/ChronoKit/System/Library/PrivateFrameworks/ComplicationDisplay.framework/ComplicationDisplay/System/Library/PrivateFrameworks/GameCenterUI.framework/GameCenterUI/System/Library/PrivateFrameworks/GameCenterUI.framework/PlugIns/GameCenterDashboardExtension.appex/GameCenterDashboardExtension/System/Library/PrivateFrameworks/PhotosUIApps.framework/PhotosUIApps/System/Library/PrivateFrameworks/Settings/LegalAndRegulatorySettingsPrivate.framework/LegalAndRegulatorySettingsPrivate/System/Library/PrivateFrameworks/Settings/SettingsUIKitPrivate.framework/SettingsUIKitPrivate/System/Library/PrivateFrameworks/Settings/WallpaperSettings.framework/WallpaperSettings/System/Library/PrivateFrameworks/WorkflowEditor.framework/WorkflowEditor/System/Library/PrivateFrameworks/WorkflowUICore.framework/WorkflowUICore总结
iOS14中的新功能都是使用Swift代码构建的，这一点也不足为奇。iOS 14最明显的功能之一就是主屏幕上添加了很多小部件。而这些小部件都是使用SwiftUI有且仅有的第一个框架WidgetKit构建的。这就说明了为什么今年SwiftUI的采用增长如此之快。iOS 14的另一个重要新功能是Translate应用，它似乎也是用SwiftUI构建的。
除了Swift库之外，iOS 14.0中总共包含291个使用了Swift的二进制文件，是iOS13的两倍。另外值得注意的是，SwiftUI已被iOS 14中的43个二进制文件迅速采用。
原文：https://blog.timac.org/2020/0927-state-of-swift-ios14/
本文为 CSDN 翻译，转载请注明来源出处。
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