I implemented Remote Push notifications for my app. I can receive Push notifications just fine.
However my goal is to execute some code automatically when Remote Notification Arrives on my iphone.
For example i have a Google Nest mini Speaker. I would like to send Push notifications to my iPhone, which should trigger a "Audio Playback" on my Google mini speaker.
I got it to work, only if user TAPS the Notification Banner, however I would like to automate it, whether user taps the notification banner or not.
I have the same exact logic working on Android, however for ios i am having issues when it comes to handle push notification.
So Question is, it it even possible to receive a remove notification and trigger something automatically?
You can try to follow this guide: https://developer.apple.com/documentation/usernotifications/setting_up_a_remote_notification_server/pushing_background_updates_to_your_app
It is called Background Push Notification or Slient Push Notification.
But System will limit the number of times that your app can run in background to execute some codes.
Related
I'm using a combination of Firebase and Batch for a chat like application.
When a push notification is received the app should be able to perform some tasks based on the data received in the notification.
From my understanding this can only be done in app states suspended -> active and not terminated.
I have it working when the app is in the foreground and also when closing the app via home button.
Should the device be locked however, didReceiveRemoteNotification:fetchCompletionHandler: is never called. At least not until the user interacts with the notification from notification center.
Is this correct? Can no work be done on a remote notification if the device is locked?
I have all the appropriate entitlements and "content-available":1 set correctly.
Is there another way that I can wake the app up from a notification and do a few background tasks? I also tried using Notification Service Extension but had the same issue with nothing happening while the device was locked.
I receive push notifications on certain events from a notification server we have.
I do want these notification alerts to appear when the app is not active in the background/foreground
I don't want the notification alert to appear when the app is active in the background (foreground not a problem since the notification doesn't show anyway). I want to show my own local notification, only.
Is there any way to do this from code? Basically I want to hide the remote push notification and instead show a local notification when my app is active.
P.S - The notification server sending silent notifications is not an option - the server does not know when our app is running/not running. There is no communication between the app and this server.
You can notify your application first and then show a local notification with that. To perform this you can simply send content-available notification from server. This makes your app notified and then you can decide on showing local notification or not.
I basically want to make multiple push notifications in the same application visible in the notification tray in iOS.
This scenario works if my data is on while push notification is triggered via APNS, but only the latest one is received in case I am offline and come back after a while. This functionality is affirmed by APNS documentaion.
However, this is what worked in WhatsApp:
Turned Data Connection OFF
Sent some messages to WhatsApp
Turned Data Connection ON
Saw multiple push notifications received in Apple's Notification Tray
How's this scenario working? Can I use APNS for this? If yes, then how?
See this sample image of multiple Push Notifications in WeChat.
Like you wrote in your question, this is mentioned in the Apple Docs:
If you are sending multiple notifications to the same device or
computer within a short period of time, the push service will send
only the last one.
Link
The only scenario that what you're describing will work is if your whatsApp was open in the background while getting those push notifications. That way whatsApp will handle them as local notifications and will present all of them in the notification center. If whatsApp was closed you'd get only the last notification like any other app.
You can easily test this:
Terminate whatsApp and turn on Airplane mode.
Send your device 5 messages from 1 to 5.
Turn Airplane mode off and lock your device.
You'll only see one msg (the last one you sent aka "5") in your notifications center.
This is how whatsApp is making it work:
While whatsApp is in the background, a single push notification is received (the last one the user sent, "5" in our example). That msg will not be shown to the user.
whatsApp receives it in the method application:didReceiveRemoteNotification:fetchCompletionHandler: and checks against their servers if there are any notifications prior to "5" that the user didn't receive. If that's the case, they will pull that data from their servers and will present it to the user using local notifications which is basically just a way to present data and not related to APNS at all.
It is explained in Troubleshooting Push Notifications. Check for "Some Notifications Received, but Not All" section.
As described you cannot have any control over those push notifications.
However you may know that from iOS7 a new background execution mode (remote-notification) allows the App to be awaken by the system when a push is received, allowing you to process some data, then go back to sleep...
This is probably the trick: using that way to receive the push notifications (silently) and then trigger your own local notification instead as #Segev said. See the UIBackgroundModes here.
I have an iOS app that needs to update its content while running in foreground automatically. My app does NOT need to update if in background.
There is a existing way to do so, which is APNS(Apple Push Notification Service).
Because I don't want users to see notification message while in background, using push notification without alert or message might be a solution.
However, if using APNS, iOS would ask users to confirm if they want to receive notifications by my app. I think that users may be confused when being asked by the OS since my app does not actually push notification to users.
The current method I use is keep pulling my API every 30 seconds to see if new content is available. This method would fail if there are too many users.
Is there any 3rd party push-notification-like service that provides notification while app runs in foreground only? (no need to get notification while in background)
You can use Silent notification for that, in this
In the WWDC 2013's "What's New with Multitasking" presentation, there is a section about Silent Push Notifications. if you send the APS payload with just the content-available set to 1, users will not be notified of the notification.
And the notification arrives in application:didReceiveRemoteNotification:fetchCompletionHandler:
Your payload is like
{
aps: {
content-available: 1,
sound: "default"
}
}
In case of push notification, it is necessary for user to accept push notification on application 1st run. You can set a silent push notification also and for this user will not get any alert of getting a notification during application run loop.
If you want to avoid push notification, then you can only set a NSTimer that you are doing already.
There can be a 3rd case, Application only sync with the server when it comes to foreground. And for this you can refer to my this post.
I'd like to implement a push notification service in my iPad app. But before I do that I have to know further details about its contraints.
I know that the user has to accept the apps notification ability. But is that only for notifications which come in when the app is in the background or also when the app is active?
A user doesn't need to accept the ability to allow Push Notifications but they can turn them off from the Settings app. This will turn off all incoming push notifications if the app is in the Background. If your app is running:
If the application is running when the notification arrives, no alert is displayed or icon badged or sound played, even if (in iOS) the device screen is locked. Instead, the application delegate is informed of the notification and can handle it directly.
You can find loads more information on Push Notifications in Apple's Push Notification Programming Guide