[英]Push Notifications - Push a ViewController upon Notification Tap with SceneDelegate
在 iOS 13 之前,導航控制器和根視圖是在 AppDelegate 中定義的。 然而,在 iOS 13 中,Apple 引入了 SceneDelegate,它接管了這些視圖函數的處理。 但是,AppDelegate 仍然處理諸如本地通知處理之類的事情。 有關概述根視圖的這些更改的一些代碼,請參閱此答案。
如果我想在用戶點擊本地通知時推送視圖,我會在 AppDelegate 中執行以下操作:
extension AppDelegate: UNUserNotificationCenterDelegate {
var navigationController: UINavigationController?
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
if response.actionIdentifier == UNNotificationDefaultActionIdentifier { //User taps notification
let vc = MyViewController()
self.navigationController?.pushViewController(vc, animated: true)
}
}
}
但是,由於我的項目的根導航控制器現在可以在 iOS 13 的 SceneDelegate 中定義,我似乎無法弄清楚如何在由 SceneDelegate 而不是 AppDelegate 管理的導航控制器中推送視圖。
SceneDelegate
可以這樣處理通知響應:
class SceneDelegate: UIResponder, UIWindowSceneDelegate {
func scene(
_ scene: UIScene,
willConnectTo session: UISceneSession,
options connectionOptions: UIScene.ConnectionOptions
) {
if let windowScene = scene as? UIWindowScene {
let window = UIWindow(windowScene: windowScene)
// rootViewController set up code
// say,
// let mainController = ViewController()
// let navigationController = UINavigationController(rootViewController: mainController)
// window.rootViewController = navigationController
// This is UNNotificationResponse
if let notificationResponse = connectionOptions.notificationResponse {
window.makeKeyAndVisible()
// do the pushing on your navigation controller
// navigationController.push()
return
}
window.makeKeyAndVisible()
}
}
}
如果您的應用程序支持多窗口或單一窗口,你可以使用targetScene
物業UNNotificationResponse
決定通知會推出哪些場景(窗口)。
例子:
func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
guard let windowSceneDelegate = response.targetScene?.delegate as? UIWindowSceneDelegate,
let window = windowSceneDelegate.window,
let rootViewController = window.rootViewController as? UINavigationController else {
completionHandler()
return
}
let notificationViewController = UIViewController()
rootViewController.pushViewController(notificationViewController, animated: true)
completionHandler()
}
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