在设备上收到时丢弃推送通知

Question

我正在使用 OneSignal 向 iOS 和 Android 设备发送推送通知。在 iOS 和 Android 设备上收到推送通知后是否可以将其丢弃？这不是全部，而是一些基于有效负载数据以及用户是否在后台或前台运行设备。

更新：

“丢弃”意味着它永远不会显示为通知。

如果我不想通过更新打扰用户（如果他们已经在前台使用其应用程序，但我想在后台显示通知），我有什么选择？

Answer 1

在 onsignal 中，您需要使用setNotificationwillshowinforegroggnhandler方法来决定是否需要向用户显示通知。

对于Android

OneSignal.setNotificationWillShowInForegroundHandler(new NotificationWillShowInForegroundHandler() {
   @Override
   void notificationWillShowInForeground(OSNotificationReceivedEvent notificationReceivedEvent) {
     OSNotification notification = notificationReceivedEvent.getNotification();
     // Get custom additional data you sent with the notification
     JSONObject data = notification.getAdditionalData();

     if (/* some condition */ ) {
        // Complete with a notification means it will show
        notificationReceivedEvent.complete(notification);
     }
     else {
       // Complete with null means don't show a notification
       notificationReceivedEvent.complete(null);
    }
  }
});

iOS

let notificationWillShowInForegroundBlock: OSNotificationWillShowInForegroundBlock = { notification, completion in
  print("Received Notification: ", notification.notificationId ?? "no id")
  print("launchURL: ", notification.launchURL ?? "no launch url")
  print("content_available = \(notification.contentAvailable)")

  if notification.notificationId == "example_silent_notif" {
    // Complete with null means don't show a notification  
    completion(nil)
  } else {
    // Complete with a notification means it will show
    completion(notification)
  }
}
OneSignal.setNotificationWillShowInForegroundHandler(notificationWillShowInForegroundBlock)

注：有关更多信息，您可以检查文档。

https://documentation.oneignal.com/ doc/sdk-notification-event手柄＃前景 - 通知重新认识的事件