How to Configure Push Notifications on iPhone

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This tutorial was updated to Xcode 8. The original tutorial was written by Jack Wu. Unfortunately, the cold hard truth is that users will sometimes have to close the app and perform other activities. Push notifications have become more and more powerful since they were first introduced. In iOS 10, push notifications can:. This push notifications tutorial will go over how push notifications work, and let you try out their features. There are three main tasks that must be performed in order to send and receive a push notification:. Tasks 1 and 3 will be the main focus of this push notifications tutorial, since they are the responsibility of an iOS developer. Task 2 will also be briefly covered, mostly for testing purposes. To get started, download the starter project of WenderCast. Push notifications require a lot of security. The first step is to change the App ID. Within Signing right below this, select your development Team. Again, this must be a paid developer account. Next, you need to create an App ID in your developer account that has the push notification entitlement enabled. Luckily, Xcode has a simple way to do this. If any issues occur, visit the Apple Developer Center. You may simply need to agree to a new developer license, which Apple loves to update ;\\\\\\\\\\\\\\\], and try again. Behind the scenes, this creates the App ID and then adds the push notifications entitlement to it. You can log into the Apple Developer Center and verify this:. There are two steps to register for push notifications. You invoke requestAuthorization options: Here, you must specify the notification types your app will use. These types represented by UNAuthorizationOptions can be any combination of the following:. When the app launches, you should receive a prompt that asks for permission to send you notifications. Tap OK and poof! The app can now display notifications. What if the user declines the permissions? Add this method inside AppDelegate:. This method is very different from the previous one. In the previous method, you specified the settings you want , yet this one returns the settings the user has granted. This is because the user can, at any time, go into the Settings app and change the notification permissions. Update requestAuthorization to call getNotificationSettings within the completion closure like this:. Here you verify the authorizationStatus is. Add the following two methods to then end of AppDelegate ; these will be called to inform you about the result of registerForRemoteNotifications:. The device token is the fruit of this process. It is a token provided by APNS that uniquely identifies this app on this particular device. There are several reasons why registration might fail. Make sure you are running on a device, and you should receive a device token in the console output. You have a bit more configuration to do before you can send a push notification, so head over to the Apple Developer Member Center and log in. Finally, download the certificate and double-click it, which should add it to your Keychain, paired with a private key:. Back in the member center, your App ID should now have push notifications enabled for development:. That was a lot to get through, but it was all worth it — with your new certificate file, you are now ready to send your first push notification! The app will automatically check for push certificates in the Keychain, and list them in a dropdown. Complete the following steps:. Simply close the app and send the notification again. Some notifications received but not all: That is intended behaviour. The size of this queue is 1, so if you send multiple notifications, the last notification is overridden. Problem connecting to Push Notification Service: One possibility could be that there is a firewall blocking the ports used by APNS. Make sure you unblock these ports. Another possibility might be that the private key and CSR file are wrong. The payload is a dictionary that contains at least one item, aps , which itself is also a dictionary. You can add custom fields to the payload like this and they will get delivered to your application. Outside of these, you can add as much custom data as you want, as long as the payload does not exceed the maximum size of bytes. When your app receives a push notification, a method in UIApplicationDelegate is called. In the first case, WenderCast will create the news item and open up directly to the news section. This option will make the debugger wait for the app to be launched for the first time after installing to attach to it. Tap on the notification, and the app should open up to some news:. If you stop receiving push notifications, it is likely that your device token has changed. This can happen if you uninstall and reinstall the app. Double check the device token to make sure. This method directly uses the helper function to create a new NewsItem. You can now change the scheme back to launching the app automatically if you like. Keep the app running in the foreground and on the News section. Send another news push notification and watch as it magically appears in the feed:. Instead, push notifications should signal that there is new content available and let the app download the content from the source e. Actionable notifications let you add custom buttons to the notification itself. Actionable notifications are defined by your app when you register for notifications by using categories. Each category of notification can have a few preset custom actions. Once registered, your server can set the category of a push notification; the corresponding actions will be available to the user when received. To get it to display the news item, you need to do some more event handling in the delegate. This is the callback you get when the app is opened by a custom action. There is one last bit: Close the app again, then send another news notification with the following payload:. Tap on the action, and you should see WenderCast present a Safari View Controller right after it launches:. Send a few more and try opening the notification in different ways to see how it behaves. Silent push notifications can wake your app up silently to perform some tasks in the background. WenderCast can use this feature to quietly refresh the podcast list. As you can imagine, with a proper server-component this can be very efficient. Check the last option, Remote Notifications:. Be sure to call the completion handler with the honest result. The system measures the battery consumption and time that your app uses in the background, and may throttle your app if needed. If all goes well, nothing should happen! You can download the completed project here. Remember that you will still need to change the bundle ID and create certificates to make it work. But with thoughtful design, push notifications can keep your users coming back to your app again and again! Software developer on multiple platforms, mainly mobile. Interface Builder and Auto Layout advocate. I have been working with iOS since Get in touch via Twitter or LinkedIn. Browse my code on GitHub and Stack Overflow. Sign up to receive the latest tutorials from raywenderlich. Learn how to get started with push notifications! This cat received a push notification that his dinner was ready. Want to learn even faster? Save time with our video courses.

How to Configure Push Notifications on iPhone

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