Is it possible to create a Notification Listener in iOS? Something like the NotificationListenerService in Android.
Edit: What I want to do is listen to any notifications coming from any app within the device (missed calls, emails, SMS...)
There are two possible answer for this.
NSNotificationCenter is used to post notifications within the app itself. Say for instance you want several classes all to receive information that something has happened (or something) then you would use this. https://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/nsnotificationcenter_Class/Reference/Reference.html
If you mean Remote Notifications i.e. push notifications that you receive from Apple then the AppDelegate receives these in a couple of its methods...
https://developer.apple.com/library/ios/documentation/uikit/reference/UIApplicationDelegate_Protocol/Reference/Reference.html#//apple_ref/doc/uid/TP40006786-CH3-SW16
Edit: It's not possible between apps. See comments.
Related
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
Hei,
I am trying to implement a feature (iOS 12+) which allows to deliver notifications silently without showing the Banner alert, but delivering it directly to the user's notification center. A bit like the new feature where a user can select that he wants to receive notifications from a specific app quietly.
I checked out the new APIs (and the old ones), but I could not find a way to solve that.
I also tried to replace existing notifications by using the same identifier, but this will also present a banner.
As my app uses notifications which may help the user, but should not interrupt him I would like to control which notifications are delivered like that and which may be prominent.
If this is currently not possible, I will create feature request for that.
Regards,
Alex
We have iOS push notifications configured and running. However, we would like the user to select which categories are interesting to receive and which are not important and would like to omit receiving those notifications.
Is there any way to do this through Apple push notification itself rather than through the server sending the notifications? (We can change the sent JSON). Can the iPhone send which categories it would like to receive and which are not needed by registering them to Apple? Other choice, can we interrupt the push notification before being shown and decide whether it should be shown or not through a delegate? So far, I can't find an available method to do either.
Any help is appreciated
The short answer is not from the client side. If you want a solution that works 100% of the time you will need to do something on a server which only sends the types of push notifications the user subscribes to.
If your App is in background there is no concept of "categories" of PUSH notifications and you have no control over if they show up in the notification center.
You can examine inbound push when the App is in the foreground and decide on the basis of some meta data to display or not, but that is not a 100% solution.
When something happens on the backend, I want to let my users' iPhone app know of this change. (The app is currently open, not in the background...if that makes it any easier).
Should I install Firebase just to achieve this? What are other ways?
Push notifications is just the UI for the user...am I right?
You could use Apple Push Notification Service. If a Push Notification arrives while your app is in the foreground, it gets passed to you directly, rather than triggering a UI event. Last I knew, you can only have 1 notification outstanding at a time, so you should not depend on it for passing content, but just use it as as signal to query your server. With iOS 8 you can use background notifications, that do not require any user permissions.
Best way is to use Push Notification. Because it will save battery power on the device.
You can use the Apple Push Notification Service (APNS) to send push notifications to the user.
You could ask your server frequently about changes or use a blocking function in seperate Thread to handle events.
What kind of events are we talking about?
As Black Frog said, PNS is the easiest and most battery saving idea.
I can send a message from my WatchKit Interface to its parent application using +openParentApplication:reply:, and I can provide data from the parent application in the reply.
Is there an official Apple mechanism for triggering a message in the other direction, ideally an Objective-C API with similar support for arbitrary user data, or do I have to use a library like MMWormhole?
The openParentApplication:reply: does have that reply parameter for sending a message back to the WatchKit side.
But I think you mean triggering a message from the iPhone app directly. You can look into Darwin notifications for this. It's a C API, but the concepts are similar to NSNotificationCenter where you register to listen for certain notifications, and then post notifications from somewhere else.