Dock或控制中心不会使应用程序处于非活动状态

Question

当我打开导航抽屉应用程序时.ApplicationState应该是Inactive，但在iOS 11中它是Active。

我想通过点击Notification Center中的通知来检测是否已调用application：didReceiveRemoteNotification

func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject]) {

    let state : UIApplicationState = application.applicationState
    if (state == .Inactive || state == .Background) {
        // go to screen relevant to Notification content
    } else {
        // App is in UIApplicationStateActive (running in foreground)
    }
}

它是iOS 11中的错误还是推送通知的新方法？

检查applicationState的其他方法：

func applicationWillResignActive(_ application: UIApplication) {
    var app = application.applicationState
}