How would you send a notification to the lock screen of an iPhone from an app when something occurs?
That kind of notification is known as a push notification (different from NSNotification). Here's a tutorial on how to get up and running with Apple Push Notifications (APNs). There are also tools out there to streamline the process, such as Parse.com and Push.io, though I cannot speak to the quality of either of those products.
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I got a question that i can't figure out a long time. I know that i can't sync my application in "not-running" state. But let me show a simple scenario:
I killed WhatsApp. It's not running.
I send a message from another device.
Remote notification received and alert shown.
I activated "plane mode" on receiver device.
Then i launch WhatsApp.
It can't sync messages because of "plane mode" but i saw new message that received with remote notification.
I tested this scenario on iOS 9 and iOS 10 devices. How does it posible? Can anyone explain this?
I think they are using Remote Notifications background mode.
"If your server sends push notifications to a user’s device when new content is available for your app, you can ask the system to run your app in the background so that it can begin downloading the new content right away. The intent of this background mode is to minimize the amount of time that elapses between when a user sees a push notification and when your app is able to able to display the associated content. Apps are typically woken up at roughly the same time that the user sees the notification but that still gives you more time than you might have otherwise."
This is from developer apple. You can read more detailed about it in this artice under "Using Push Notifications to Initiate a Download".
Hope it will help.
I am trying to make an app where you could send a warning to other users which then will trigger an alarm on the receivers phone.
So my plan is to send a silent warning to the receiver, which then triggers sounds and vibrations on the receivers phone from the app.
So basically my question is, is it possible to open an app on a phone through a silent push?
This is done with push notifications in iOS. See Apple's description.
Apps must be configured appropriately before they can receive local or remote notifications. The configuration process differs slightly on iOS and OS X, but the basic principles are the same. At launch time, your app registers to receive notifications and works with the system to configure that notification support. Once registration is complete, you can start creating notifications for delivery to your app. Your app then handles these incoming notifications and provides an appropriate response.
But note that it is up to the receiving user to determine how he wants to be alerted.
I have a small question about push notification sync between devices.
For instance, I'm building an iOS and an OSX app.
Both of them support push notifications and I send notifications to both devices at the same time.
Is it possible to "hide/dismiss" the push notification (or change badge) on an OSX device if I opened a push notification on my iOS device?
Like iMessages does.
I can't find any Apple API or third party service that does somthing like that.
Thanks for your help.
Does your app communicating with any server? If yes you can send information like "user-saw-content" to the server then send another push notification to cancel others notifcations if necessary.
I have a beta app that people are testing. Some are saying that they "turned off" push notifications in the Settings app but they are still getting notifications. My assumption is that if the user turned off notifications for my app via the Settings app, then I could still send notifications to their device and the notifications would not be displayed.
Is there a problem with how I am handing this? I have been searching through the Push Notification documentation but haven't found anything about this.
Thank You.
It's the users job to allow them.
It's the systems job to fetch/display them.
It's the servers job to send them.
I am new to iOS development and I recently came to know about the Apple Push Notification Service.
Does anyone know whether it is possible to push application updates to iPhone/iPad devices using Apple Push Notification Service..?
Thanks.
From the documentation:
Local notifications and push notifications are ways for an application
that isn’t running in the foreground to let its users know it has
information for them. The information could be a message, an impending
calendar event, or new data on a remote server. When presented by the
operating system, local and push notifications look and sound the
same. They can display an alert message or they can badge the
application icon. They can also play a sound when the alert or badge
number is shown.
So no, you can't push application updates. You could send a message telling the user that an update was available, though that would be considered pretty obnoxious by many users.