Push Notifications are one-way forms of communication offered to mobile users that some operation (like an update, deletion, or addition) has happened.
To send a push notification to an Apple device, use the Apple Push Services. For an Android device, use Google’s Firebase Cloud Messaging Services. Fortunately, if you’re sending a push notification to an app on both platforms, Microsoft offers an easier way through Microsoft Azure Notification Hub.
Go to the Azure portal.
- Click “Create a resource”, “Web + Mobile” and select “Notification Hub.”
- In the new window, enter the notification hub name and create a new namespace.
- Select a location. We recommend a location closest to the user or closest to you (the developer).
- Choose an existing resource group or create a new resource group.
- Select your Microsoft subscription (for billing purposes).
- Choose a pricing tier based on your usage needs and click “Select” to close the pricing tab.
- Click “Create” to create the new notification hub. It may take few minutes to create and configure.
- Choose the “Google (GCM)” from the side menu. This section is used to configure and send Android-based push notifications using Birebase cloud messaging.
Create the Firebase Push Notifcation
- Open a new browser window and navigate to https://console.firebase.google.com/.
- Login or create a new account. After you have logged in, click “+ Add Project”.
- Enter the Project Name and Country/region. You can change the Project ID if required.
- Click “CREATE PROJECT.” It may take a few minutes to create the project.
- After the message “Your new project is ready”, click “CONTINUE” to navigate to the project page.
- In the new page, select “Add Firebase to your Android app” to create an Android-based Firebase app.
- In the next screen, enter the “Android package name” and enter an optional app nickname. Select “REGISTER APP.”
- In the next screen, click “Download google-services.json” and download the file.
- Open the downloaded file and copy the project number (a 12-digit code like 272477558565) into the project’s AppSettings.cs file for FirebaseSenderID.
Create push services for iOS:
- Select “Apple (APNS)” from the Azure portal side menu.
- Upload a certificate to send push notifications on iOS. Log in to https://developer.apple.com.
- Navigate to “Certificates, Identifiers and Profiles.”
- Select the Apple ID associated with the application.
- Ensure that the ID is configured to use Push Notifications. It should have the status as Configurable. Click “Edit” to configure push services.
- In the next screen, choose to create either a development or production SSL certificate and click “Create Certificate.”
- The next screen requires you to create a “certSigningRequest”. Create the file and upload it.
- On the Mac, open the “Keychain Access” application: press WinKey + Spacebar to open Spotlight. Type “keychain access” and press enter.
- Select Keychain Access -> Certificate Assistant -> Request a Certificate From a Certificate Authority.
- Enter the user email address, command name, and Certificate Authority (CA) Email address.
- Select “Saved to disk” and click “Continue”.
- In the popup dialog, save the certSigningRequest.
- Choose a location. If you’re choosing a default location, make sure to note the location for future purposes.
- Now navigate back to the apple developer website and upload the previously created certSigningRequest and select “Continue.”
- In the next screen, click “Download” button to download the .cer file. After downloading the file, select “Done” and close the browser.
- Double click to open the .cer file. It will by default open the Keychain Access application.
- Enter the administrator password to install the .cer file.
- Right-click on the certificate and choose “Export [Certificate Name].”Enter a name for the “.p12” file. Select the location of the file and click “Save.” Make sure the file format is “Personal Information Exchange (.p12)” before saving the file.
- Enter a password for the p12 file. Re-enter the password.
- Enter the administrator password for Keychain Access application to export the key and select “Allow.”
Now navigate back to the Azure portal.
- Select Folder Icon.
- Find the p12 file and click “Open.” Enter the same password used to create the file. Save.
- Open the Backend Mobile app service from the Azure portal and navigate to “Push” from the sidebar menu.
- Connect to the notification hub we created earlier.
- Choose the previously created notification hub.
- On the next screen, add the tag “UserGroup1” for push notifications to be delivered to the mobile devices. Save.