Question

我已在我的应用中实施了远程通知，但我遇到了didReceiveRemoteNotification:fetchCompletionHandler:的问题。

当手机的屏幕被锁定时，我收到通知。如果用户滑动通知，应用程序将返回到前台并调用didReceiveRemoteNotification:fetchCompletionHandler:。

但如果应用程序在前台运行，则永远不会调用didReceiveRemoteNotification:fetchCompletionHandler:。可能是什么原因？

我正在使用iOS 10.3.2

Answer 1

您正在使用哪个iOS版本？

iOS 9和iOS 10有不同的方法。

以下是适用于iOS 10的

    //Called when a notification is delivered to a foreground app.
    @available(iOS 10.0, *)
    func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {

    }


    //Called to let your app know which action was selected by the user for a given notification.
    @available(iOS 10.0, *)
    func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {

    }

对于iOS 9，请务必在 didBecomeActive

中注册您的通知

UIApplication.shared.registerUserNotificationSettings(UIUserNotificationSettings(types: [.sound, .alert, .badge], categories: nil))
UIApplication.shared.registerForRemoteNotifications()

并在 didReceiveRemoteNotification

中

func application(_ application: UIApplication, didReceiveRemoteNotification data: [AnyHashable : Any]) {

if application.applicationState == .active {
//foreground state
 }

}

最佳方法是将调试器放入 didReceiveRemoteNotification 并进一步检查。

iOS推送通知 - didReceiveRemoteNotification：fetchCompletionHandler：从未在前台调用过

1 个答案: