55

In-app messages

Incorporate in-app messages to send dynamic, personalized content to people using your app. With in-app messages, you can speak directly to your app’s users when they use your app.

This page is part of a setup flow for the SDK. Before you continue, make sure you've implemented previous features—i.e. you can't receive in-app notifications before you identify people!

How it works

An in-app message is a message that people see within the app. To set up in app messaging, install and initialize the Tracking and MessagingInApp packages.

People won’t see your in-app messages until they open your app. If you set an expiry period for your message, and that time elapses before someone opens your app, they won’t see your message.

You can also set page rules to display your in-app messages when people visit specific pages in your app. However, to take advantage of page rules, you need to use screen tracking features. Screen tracking tells us the names of your pages and which page a person is on, so we can display in-app messages on the correct pages in your app.

Set up in-app messaging

Use Swift Package Manager to install the MessagingInApp package. See Getting Started for installation instructions. Initializing your app with the MessagingInApp package sets up your app to receive in-app messages.

Page rules

You can set page rules when you create an in-app message. A page rule determines the page that your audience must visit in your app to see your message. However, before you can take advantage of page rules, you need to:

1. Track screens in your app. You can add $0.autoTrackScreenViews = true to your CustomerIO.config to automatically track screens or you can track screens manually.
2. Provide page names to whomever sets up in-app messages in fly.customer.io. If we don’t recognize the page that you set for a page rule, your audience will never see your message.

The SDK automatically uses the class name of UIViewController, minus ViewController, as the name of each page. For example, if you wanted to display an in-app message on a class called EditProfileViewController, you would enter EditProfile as your page rule.

Targeting people with in-app messages

Whoever composes messages in your system needs to know how you identify people—whether you recognize people by email address or ID.

When you set up a message in Customer.io, you’ll set a To field. This field is the identifierThe attributes you use to add, modify, and target people. Each unique identifier value represents an individual person in your workspace. that your app uses to identify people in Customer.io. When a person in your campaign or broadcast is identified by the value in the To field, they’ll receive your message. If your app doesn’t identify people using the value you select, we won’t deliver your message to the person. Your messages will appear as Sent, but never Opened or Clicked.

Handle Universal Links

To enable Universal Links in your iOS app, follow the instructions on the Apple documentation website. Be sure to complete all of the steps required including making modifications to your website to host a new file and making modifications to your mobile app’s code to handle the deep link.

Depending on how you set up your mobile app (SwiftUI, UIKit, watchOS, etc), you may need to handle deep links in multiple functions in your code. One of the functions you are required to have in your app is:

class AppDelegate: UIResponder, UIApplicationDelegate {
    func application(_ application: UIApplication, continue userActivity: NSUserActivity, restorationHandler: @escaping ([UIUserActivityRestoring]?) -> Void) -> Bool {
        guard let universalLinkUrl = userActivity.webpageURL else {
            return false 
        }

        // Parse `universalLinkUrl` object to perform the action you want in your app. 

        // return true from this function if your app handled the deep link. 
        // return false from this function if your app did not handle the deep link and you want sdk to open the URL in a browser.
    }
}

Handle responses to messages (event listeners)

You can set up event listeners to handle your audience’s response to your messages. For example, you might run different code in your app when your audience taps a button in your message or when they dismiss the message without tapping a button.

You can listen for four different events:

• messageShown: a message is “sent” and appears to a user
• messageDismissed: the user closes the message (by tapping an element that uses the close action)
• errorWithMessage: the message itself produces an error—this probably prevents the message from appearing to the user
• messageActionTaken: the user performs an action in the message.

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13

import CioMessagingInApp
import CioTracking 

CustomerIO.initialize(siteId: workspaceId, apiKey: apiKey, region: Region.US)

MessagingInApp.initialize(eventListener: self)

extension YourClass: InAppEventListener {
    func messageShown(message: InAppMessage) {}
    func messageDismissed(message: InAppMessage) {}
    func errorWithMessage(message: InAppMessage) {}
    func messageActionTaken(message: InAppMessage, actionValue: String, actionName: String) {}
}

Handling custom actions

When you set up an in-app message, you can determine the “action” to take when someone taps a button, taps your message, etc. In most cases, you’ll want to deep link to a screen, etc. But, in some cases, you might want to execute some custom action or code—like requesting that a user opts into push notifications or enables a particular setting.

In these cases, you’ll want to use the messageActionTaken event listener and listen for custom action names or values to execute code. While you’ll have to write custom code to handle custom actions, the SDK helps you listen for in-app message events including your custom action, so you know when to execute your custom code.

1. When you add an action to an in-app message in Customer.io, select Custom Action and set your Action’s Name and value. The Name corresponds to the actionName, and the value represents the actionValue in your event listener.

   

   
2. Register an event listener for MessageActionTaken, and listen for the actionName or actionValue you set up in the previous step.

    Use names and values exactly as entered

   We don’t modify your action’s name or value, so you’ll need to match the case of names or values exactly as entered in your Custom Action.

3. When someone receives a message and invokes the action (tapping a button, tapping a message, etc), your app will perform the custom action.

Dismiss in-app message

You can dismiss the currently display in-app message with the following method. This can be particularly useful to dismiss in-app messages when your audience clicks or taps custom actions.

    MessagingInApp.shared.dismissMessage()