应用程序终止时推送通知

Question

如果应用程序在后台和/或应用程序位于前台,我的应用程序可以正常使用推送通知.

我遇到的问题是如果应用程序被终止(我强制双击主页按钮,找到应用程序,然后向上滑动).

我正在使用ios 9和swift 2.

在app delegate中,didFinishLaunchingWithOptions,我这样做:

let settings = UIUserNotificationSettings(forTypes: [.Alert, .Badge, .Sound], categories: nil)

application.registerUserNotificationSettings(settings)

application.registerForRemoteNotifications()

然后:

func application(application: UIApplication, didRegisterUserNotificationSettings notificationSettings: UIUserNotificationSettings) {        
        application.registerForRemoteNotifications()
}

其次是didRegisterForRemoteNotificationsWithDeviceToken&didFailToRegisterForRemoteNotificationsWithError.

然后,我使用相对较新的方法:

func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject], fetchCompletionHandler completionHandler: (UIBackgroundFetchResult) -> Void) {...}

根据文档和这个链接,与旧版本相反,didReceiveRemoteNotification如果应用程序被终止,则会调用此方法(与调用will/doneLaunchingWithOptions相反).

但是,如果有一个推(已收到 - 我可以在屏幕上看到它)并且我终止后启动应用程序,这个方法似乎不会被称为处理推送的代码(只需发布一个通知所以它被相应的ViewController拾取)不会被调用.

我错过了什么？我需要在didFinishLaunchingWithOptions中进行额外的检查吗？别的地方？

Answer 1

设法解决了在 ios 9.1 上终止应用程序时拦截远程推送的问题，但在 9.2 上失败了（随机失败？）：

注册远程：

if #available(iOS 9, *) {

            let settings = UIUserNotificationSettings(forTypes: [.Alert, .Badge, .Sound], categories: nil)

            //            UIApplication.sharedApplication().registerUserNotificationSettings(settings)
            //
            //            UIApplication.sharedApplication().registerForRemoteNotifications()

            application.registerUserNotificationSettings(settings)

            application.registerForRemoteNotifications()

} else if #available(iOS 8.0, *){
  register for 8...
} else { //ios 7
  register for 7...
}


if let _ = launchOptions {

       if let _ = launchOptions?[UIApplicationLaunchOptionsRemoteNotificationKey] as? NSDictionary {

                handleRemotePush()

            } else if let _ = launchOptions?[UIApplicationLaunchOptionsLocalNotificationKey] as? UILocalNotification {

                handleLocalNots()

            } else {

                handleElse()

        }

}