从 WidgetKit 小部件扩展检测应用程序启动

点击 WidgetKit 小部件会自动启动其父应用程序。如何检测我的应用程序是否是从其 WidgetKit 小部件扩展启动的？

我无法找到任何有关在应用程序中捕获此内容的文档AppDelegate and/or SceneDelegate.

要检测从 WidgetKit 小部件扩展中启动的应用程序，其中父应用程序支持您需要实现的场景场景(_:openURLContexts:) https://developer.apple.com/documentation/uikit/uiscenedelegate/3238059-scene，用于从后台状态启动，以及场景（_：willConnectTo：选项:) https://developer.apple.com/documentation/uikit/uiscenedelegate/3197914-scene，用于从冷状态启动，在您的父应用程序中SceneDelegate。另外，添加小部件URL(_:) https://developer.apple.com/documentation/swiftui/view/widgeturl(_:)到您的小部件的视图。

小部件的View:

struct WidgetEntryView: View {
    
    var entry: SimpleEntry
    
    private static let deeplinkURL: URL = URL(string: "widget-deeplink://")!

    var body: some View {
        Text(entry.date, style: .time)
            .widgetURL(WidgetEntryView.deeplinkURL)
    }
    
}

家长申请SceneDelegate:

// App launched
func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
    guard let _: UIWindowScene = scene as? UIWindowScene else { return }
    maybeOpenedFromWidget(urlContexts: connectionOptions.urlContexts)
}

// App opened from background
func scene(_ scene: UIScene, openURLContexts URLContexts: Set<UIOpenURLContext>) {
    maybeOpenedFromWidget(urlContexts: URLContexts)
}

private func maybeOpenedFromWidget(urlContexts: Set<UIOpenURLContext>) {
    guard let _: UIOpenURLContext = urlContexts.first(where: { $0.url.scheme == "widget-deeplink" }) else { return }
    print("???? Launched from widget")
}