Improving apps with iOS 10 notifications (do iOS 2016)

1
Hi, I’m Donny
Improving apps with iOS 10 notiﬁcations
Because notiﬁcations can be pretty cool

2
Contents
A quick history of notiﬁcations
Introduction to the UserNotiﬁcations framework
Service Extensions
Content Extensions
The bigger picture

iOS 7
Text only notiﬁcations
Limited information and context

iOS 8
Simple actions
Apple had a Text Input action for quick replies

iOS 9
Developers could add the Text Input action
Less need to open the app

Everything < iOS 10
The difference between local and remote
func application(_ application: UIApplication,
didReceiveRemoteNotification userInfo: [AnyHashable : Any])
{
}
didRegisterForRemoteNotificationsWithDeviceToken
deviceToken: Data) {
}
func application(_ application: UIApplication, didReceive
notification: UILocalNotification) {
}
func application(_ application: UIApplication, didRegister
notificationSettings: UIUserNotificationSettings) {
}

Everything < iOS 10
And of course, it all goes in AppDelegate
didReceiveRemoteNotification userInfo: [AnyHashable : Any])
{
}
}
func application(_ application: UIApplication, didReceive
notification: UILocalNotification) {
}
func application(_ application: UIApplication, didRegister
notificationSettings: UIUserNotificationSettings) {
}

Everything < iOS 10
Showing notiﬁcations while foregrounded
There’s one more thing…

iOS 10
Media in notiﬁcations
Custom user interface
True end-to-end encryption
Uniﬁed framework

UserNotification at a glance
Unified Local and Remote
Single registration handler
Handle notifications through a delegate
Not compatible with < iOS 10
func userNotificationCenter(_ center:
UNUserNotificationCenter, didReceive response:
UNNotificationResponse, withCompletionHandler
completionHandler: @escaping () -> Void) {
}
UNUserNotificationCenter, willPresent notification:
UNNotification, withCompletionHandler completionHandler:
@escaping (UNNotificationPresentationOptions) -> Void) {
}
let notificationCenter = UNUserNotificationCenter.current()
notificationCenter.getNotificationSettings { settings in
if settings.authorizationStatus == .notDetermined {
notificationCenter.requestAuthorization(options:
[.badge, .alert]) { success, error in
// handle status
}
}
}

UIApplication.shared.registerForRemoteNotifications() APNS
}

let content = UNMutableNotificationContent()
content.title = “Next speaker" 
content.body = “Donny is up next"
content.badge = 1
let path = Bundle.main.path(forResource: "thumbs", ofType:
"png")!
let imageUrl = URL(fileURLWithPath: path)
let image = try! UNNotificationAttachment(identifier:
"thumbs-up", url: imageUrl, options: nil)
content.attachments = [image]
let trigger =
UNTimeIntervalNotificationTrigger(timeInterval: 10, repeats:
false)
let request = UNNotificationRequest(identifier:
“nextSpeaker", content: content, trigger: trigger)
notificationCenter.add(request, withCompletionHandler: nil)
Create notification contents
Schedule the notification
Update notification contents

Create notification contents
Schedule the notification
Update notification contents

And when you're in the
foreground...
UNUserNotificationCenter, willPresent notification:
UNNotification, withCompletionHandler completionHandler:
@escaping (UNNotificationPresentationOptions) -> Void) {
completionHandler([.alert, .sound])
}

Service extensions
Hey there! What's up?
49 29b9 cfdc15cfe
3969 107fa
Service Extension
End to end encryption
Send push with mutable-content: 1
Update contents
Limited time available

Service extensions
override func didReceive(_ request: UNNotificationRequest,
withContentHandler contentHandler: @escaping
(UNNotificationContent) -> Void) {
self.contentHandler = contentHandler
decryptedContent = (request.content.mutableCopy() as?
UNMutableNotificationContent)
if let decryptedContent = decryptedContent {
decryptedContent.title = "Updated title"
contentHandler(decryptedContent)
}
}
override func serviceExtensionTimeWillExpire() {
if let contentHandler = contentHandler, let
decryptedContent = decryptedContent {
contentHandler(decryptedContent)
}
}
End to end encryption
Send push with mutable-content: 1
Update contents
Limited time available

Content extensions
View controller based extension
Extensions are tied to categories
Set content ratio in .plist
Actions are to added to notiﬁcations separately
<key>NSExtensionAttributes</key>
<dict>
<key>UNNotificationExtensionCategory</key>
<string>wheel</string>
<key>UNNotificationExtensionInitialContentSizeRatio</
key>
<real>1</real>
</dict>
let content = UNMutableNotificationContent()
content.title = "Spin the wheel?"
content.body = "Win tickets for Do iOS"
content.categoryIdentifier = "wheel"
content.badge = 1

Content extensions
Bring your own UI
Extensions don’t receive touches
Extensions do receive notiﬁcation responses
Even less need for users to open your app
func didReceive(_ response: UNNotificationResponse,
completionHandler completion: @escaping
(UNNotificationContentExtensionResponseOption) -> Void) {
if response.actionIdentifier == "spin" {
wheel.spin()
}
}

Looking at the bigger
picture
Stand out with Content Extensions
Design for short, quick interactions
Increased privacy with Service Extensions
Hey there! What's up?
49 29b9 cfdc15cfe
3969 107fa
Service Extension

Looking at the bigger
picture
Cleaner code, more maintainable
Only send meaningful messages
Use identiﬁers to update notiﬁcations if needed

Improving apps with iOS 10 notifications (do iOS 2016)

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