ios - 推送通知 - 当应用程序从后台关闭时设置 rootViewController

Question

我已经使用 firebase 实现了推送通知。当应用程序位于前台和后台时，它可以按照我想要的方式完成。但是当应用程序从后台关闭并且通知从消息中打开时，我想重置我的 rootViewController。因此，我在 didReceive response: 上更改了它，但是当应用程序重新打开时，它会返回到旧的 rootViewController(已在 didFinishLaunchingWithOptions 上设置)。

PS。默认rootViewController是一个luncher动画viewController，它有一些带有延迟的动画，然后它将重定向到另一个ViewController，该ViewController将被设置为rootViewController

这是代码片段:

func userNotificationCenter(_ center: UNUserNotificationCenter,
                            didReceive response: UNNotificationResponse,
                            withCompletionHandler completionHandler: @escaping () -> Void) {

    let userInfo = response.notification.request.content.userInfo

    let mainStoryboard = UIStoryboard(name: "Main", bundle: nil)

    let state = UIApplication.shared.applicationState

    if state == .active {
        // foreground
        // Will return current viewController which is showing into screen
        let rootVC = getCurrentViewController()
        let reviewVC = mainStoryboard.instantiateViewController(withIdentifier: ReviewViewController.className) as! ReviewViewController
        rootVC?.present(reviewVC, animated: true, completion: nil)
    } else {
        // background
        let swVC = mainStoryboard.instantiateViewController(withIdentifier: "SWRevealViewController") as! SWRevealViewController
        window?.rootViewController = swVC
        window?.makeKeyAndVisible()
        // Will return current viewController which is showing into screen
        let rootVC = self.getCurrentViewController()
        let reviewVC = mainStoryboard.instantiateViewController(withIdentifier: ReviewViewController.className) as! ReviewViewController
        rootVC?.present(reviewVC, animated: true, completion: nil)
    }
    completionHandler()
}

Answer 1

从您的 didReceive 方法中删除此行。

let swVC = mainStoryboard.instantiateViewController(withIdentifier: "SWRevealViewController") as! SWRevealViewController
window?.rootViewController = swVC
window?.makeKeyAndVisible()