I have an app in which I am using an FCM notification when there is an event from server.
I want to get the notification data and update the message from one of the parameter from Notification Payload when app is in background, foreground or killed.
I have tried to use Silent Push Notification with Content Available but when my app is killed, then I am unable to receive callback in my App delegate.
I have tried lots of links from StackOverflow but could not get the perfect suggestion.
If you find duplicate, then please provide me the link but solution with different iOS (12,13,14,15) versions.
My problem is just like this Stack Link
It sounds like what you want is a Notification Service Extension. This is a separate binary (packaged with your app) that can run when a notification is received. Your extension can intercept the push-notification payload, and modify it, so that other things can be displayed.
https://developer.apple.com/documentation/usernotifications/unnotificationserviceextension
This is also really good, too.
https://www.raywenderlich.com/8277640-push-notifications-tutorial-for-ios-rich-push-notifications
Related
I am creating a framework that can receive custom (a certain data model) messages from firebase. The framework is going to be implemented to receive notifications that are not related with the app but with other stuff.
So the framework is going to handle all the display issue by translating the data received and create a notification as it is indicated (I have some flags in data receive that indicated if I should use an image or attach an icon .. etc).
So I did some research on how to receive messages from FCM.
In first instance, I found direct channel that allows to bypass APNS, the problem is that, this only works with the app in foreground.
I indeed create a test project in firebase, a single view app, register my app in firebase project, set info.plist, configure , and send a notification to my app and It worked (just when the app was open).
Then I looked for another choice, and I found APNS. Skiping all the process for validation between firebase and APNS. I found that when you have all set up (and you put all initialization in didAplicationFinishLaunching) your app is able to receive notifications from firebase (Through APNS) when applicaton is in background.
But, notification received (the one that gets displayed) is just for you to tap over it and then it will fire up the app again an only then you will receive the whole data in aplication:didReceiveRemoteMessage method.
My question is, is there a way I can get this custom messages even in background and when received I can display a notification with the content of the whole message?
Yes,
Fortunately you can do that but for that you need to send Silent Notification which will let you process the notification in background and schedule local notification to trigger it with you desired data.
I have implemented AWS SNS push notification service.
We have an issue which is explained below :
Scenario :
We are trying to save the notification message we receive as a part of requirement.
When the app is killed (swipe out from recent apps) we are able to receive notification, also we are able to save the notification message when we open the message directly from the notification panel it works fine,but when we open the app directly the notification message is not getting saved.
In short we are not able to know if we had received a notification message if we directly open the app rather than clicking the message from the notification panel.
Is this default behavior ? or is there any work around for this ?
Have looked into many posts on about Push Notifications but haven't seen any threads pointing to this scenario.
This is a normal behavior, and there is no workaround.
If your app is killed by the user, it won't be able to run ANY code before it's manually launched again.
If it's manually launched from a notification, this notification's payload will be handled by your AppDelegate.
On top of that, don't forget that Push notifications are Best Effort. That means that they are not reliable, they can be heavily delayed or never delivered at all. Don't rely on Push notifications to achieve any critical work.
If you need to keep a copy of your notifications in-app, keep them server side and fetch them as you would do with any other object.
In order to execute code when the app is killed by the user you need to implement VOIP using PushKit framework provided by apple.
VOIP push unlike regular push notification enables the app to become active even if the app is killed by user.
On Android, when supplying the same id in two calls to NotificationManager.notify, only one notification will be shown in the notification drawer.
But how to do it on iOS
Thanks
Notifications on iOS are not designed to be grouped/collapsed or replaced by other notifications. Just check other messenger apps, the convention is to have a separate notification for each message, contrary to Android. Also a message doesn't get replaced by a new message in the same conversation. The functionality that Android provides here simply doesn't exist in iOS.
What you could do instead is, to send silent notifications ("push-to-sync") and handle the grouping/replacing on client side, since you have more control over local notifications (e.g. you can remove single local notifications, but not single remote notifications). But keep in mind, if the app was force quit, it won't be woken up to process the silent notification.
I think your best option is to stick to the convention and don't group/replace notifications.
about iOS you have to understand many things about the push notification
first it is not part of your app, in iOS it is separate application called notification centre that your app add itself to it so when APNS send a notification it send it to the notification centre in your iPhone not to your app.
so what you need to do will be in the server side not in the mobile side
for example let's say it is a chat application
the server side should check if the message is sent from the same user
the badge count should remain the same and not to notify APNS with new count
and also in the server side
the server will check if the message from the same user to send only sound notification not text or if the server got many message at once from the same user send the text with got many message from same user
but all of that is just work around as something like this is not provided yet in iOS may be in iOS9 as it become more open and not like previous versions
good luck
I cant find a clear answer about this in the Titanium documentation. Is it possible to directly respond to a push notification while the app is killed ?
I know that the callback is called when you open the app trough the push notification. but is there a way to respond when the app is opened manually ?
I tried to use remote-notification as UIBackgroundModes, but this only helps for paused apps.
My goal is to show the push notification in a in-app message center.
You should never rely on push notifications to deliver you payloads, they are too limited for that. If the user receives 5 push notifications and opens the app via the app icon, you will never receive any of the payloads. If he opens the app via one of those notifications you will only receive that payload.
You could use silentpush:
http://docs.appcelerator.com/platform/latest/#!/guide/iOS_Background_Services-section-37539664_iOSBackgroundServices-SilentPush
But the app should always query a back-end to get the actual data. That's how WhatsApp does it as well, as you can see when you open it via a notification it will then still fetch the message(s) form the server.
I have a iOS 5.1 application that registers to the APNS service to receive notifications. The register is successful and I receive the notifications correctly. The problem comes when I try to handle the notifications.
Once the application is running, the method didReceiveRemoteNotification in the AppDelegate is called correctly and so the notification is handled as intended. This, however, only happens when the application is running on the foreground.
However, when the application is running on the background or is simply stopped, that method is not called. I've read that you should add some lines to the method didFinishLaunchingWithOptions method to obtain the notification from the userInfo dictionary, and handle it. This works just fine, but ONLY when the application is opened by clicking on the notification at the Notification Center. This means that if you open the application by clicking on its badge, or simply by changing context if you were running it on the background, the app never realises that a notification came in. Additionally, if more than one notification was received, we can only handle one of them at once by clicking on the Notification Center, which is a pain :-)
Is there any way to read the pending notifications in the Notification Center? I know there is a way to flush them using the method cancelAllLocalNotifications but I haven't found a way to just read them. And I really need to handle all of them. I thought of implementing a communication protocol with the third-party notification server to retrieve the information again when the application comes to the foreground, but since the information is already in the operating system I would find it strange if it's impossible to access it somehow.
So, does anybody know a way to do it? Thanks in advance.
When a push notification arrives and the user clicks 'cancel', your app has no way to read that push notification again. You have to implement a separate functionality (most probably on server-side) to fetch a list of notifications sent to this device.
For example, if a chat functionality is provided in your app and you send chat messages via push notifications then you should also keep chat messages on the server. If a user clicks 'Cancel' on any push notification then that chat message will not be displayed on the iOS device. In that case when a app comes in foreground later, you make a call to the server and fetch all the past chat messages (sent via push notification).
Ok, So a possible solution would be to have another database table with the messages in with a 'read' flag and a messageID field? Which by default the read flag is NO, then when the app successfully reads this and displays, it updates the flag to YES?
And with only 256 bytes to play with, what sort of ID field length would be necessary?
Edit,
Executed this plan and its working successfully.