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In-app message integration

Native in-app messages display automatically on Android and iOS when using React Native. This article covers customizing and logging analytics for your in-app messages for apps using React Native.

Accessing in-app message data

In most cases, you can use the Braze.addListener method to register event listeners to handle data coming from in-app messages.

Additionally, you can access the in-app message data in the JavaScript layer by calling the Braze.subscribeToInAppMessage method to have the SDKs publish an inAppMessageReceived event when an in-app message is triggered. Pass a callback to this method to execute your own code when the in-app message is triggered and received by the listener.

To customize the default behavior further, or if you don’t have access to customize the native iOS or Android code, we recommend that you disable the default UI while still receiving in-app message events from Braze. To disable the default UI, pass false to the Braze.subscribeToInAppMessage method and use the in-app message data to construct your own message in JavaScript. Note that you will need to manually log analytics on your messages if you choose to disable the default UI.

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import Braze from "@braze/react-native-sdk";

// Option 1: Listen for the event directly via `Braze.addListener`.
//
// You may use this method to accomplish the same thing if you don't
// wish to make any changes to the default Braze UI.
Braze.addListener(Braze.Events.IN_APP_MESSAGE_RECEIVED, (event) => {
  console.log(event.inAppMessage);
});

// Option 2: Call `subscribeToInAppMessage`.
//
// Pass in `false` to disable the automatic display of in-app messages.
Braze.subscribeToInAppMessage(false, (event) => {
  console.log(event.inAppMessage);
  // Use `event.inAppMessage` to construct your own custom message UI.
});

Advanced customization

To include more advanced logic to determine whether or not to show an in-app message using the built-in UI, implement in-app messages through the native layer.

Implement the IInAppMessageManagerListener as described in our Android article on Custom Manager Listener. In your beforeInAppMessageDisplayed implementation, you can access the inAppMessage data, send it to the JavaScript layer, and decide to show or not show the native message based on the return value.

For more on these values, see our Android documentation.

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// In-app messaging
@Override
public InAppMessageOperation beforeInAppMessageDisplayed(IInAppMessage inAppMessage) {
    WritableMap parameters = new WritableNativeMap();
    parameters.putString("inAppMessage", inAppMessage.forJsonPut().toString());
    getReactNativeHost()
        .getReactInstanceManager()
        .getCurrentReactContext()
        .getJSModule(DeviceEventManagerModule.RCTDeviceEventEmitter.class)
        .emit("inAppMessageReceived", parameters);
    // Note: return InAppMessageOperation.DISCARD if you would like
    // to prevent the Braze SDK from displaying the message natively.
    return InAppMessageOperation.DISPLAY_NOW;
}

Overriding the default UI delegate

By default, BrazeInAppMessageUI is created and assigned when you initialize the braze instance. BrazeInAppMessageUI is an implementation of the BrazeInAppMessagePresenter protocol and comes with a delegate property that can be used to customize the handling of in-app messages that have been received.

  1. Implement the BrazeInAppMessageUIDelegate delegate as described in our iOS article here.

  2. In the inAppMessage(_:displayChoiceForMessage:) delegate method, you can access the inAppMessage data, send it to the JavaScript layer, and decide to show or not show the native message based on the return value.

For more details on these values, see our iOS documentation.

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- (enum BRZInAppMessageUIDisplayChoice)inAppMessage:(BrazeInAppMessageUI *)ui
                            displayChoiceForMessage:(BRZInAppMessageRaw *)message {
  // Convert the message to a JavaScript representation.
  NSData *inAppMessageData = [message json];
  NSString *inAppMessageString = [[NSString alloc] initWithData:inAppMessageData encoding:NSUTF8StringEncoding];
  NSDictionary *arguments = @{
    @"inAppMessage" : inAppMessageString
  };

  // Send to JavaScript.
  [self sendEventWithName:@"inAppMessageReceived" body:arguments];

  // Note: Return `BRZInAppMessageUIDisplayChoiceDiscard` if you would like
  // to prevent the Braze SDK from displaying the message natively.
  return BRZInAppMessageUIDisplayChoiceNow;
}

To use this delegate, assign it to brazeInAppMessagePresenter.delegate after initializing the braze instance.

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@import BrazeUI;

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
  BRZConfiguration *configuration = [[BRZConfiguration alloc] initWithApiKey:apiKey endpoint:endpoint];
  Braze *braze = [BrazeReactBridge initBraze:configuration];
  ((BrazeInAppMessageUI *)braze.inAppMessagePresenter).delegate = [[CustomDelegate alloc] init];
  AppDelegate.braze = braze;
}

Overriding the default native UI

If you wish to fully customize the presentation of your in-app messages at the native iOS layer, conform to the BrazeInAppMessagePresenter protocol and assign your custom presenter following the sample below:

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BRZConfiguration *configuration = [[BRZConfiguration alloc] initWithApiKey:apiKey endpoint:endpoint];
Braze *braze = [BrazeReactBridge initBraze:configuration];
braze.inAppMessagePresenter = [[MyCustomPresenter alloc] init];
AppDelegate.braze = braze;

Analytics

To log analytics using your BrazeInAppMessage, pass the instance into the desired analytics function:

  • logInAppMessageClicked
  • logInAppMessageImpression
  • logInAppMessageButtonClicked (along with the button index)

For example:

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// Log a click
Braze.logInAppMessageClicked(inAppMessage);
// Log an impression
Braze.logInAppMessageImpression(inAppMessage);
// Log button index `0` being clicked
Braze.logInAppMessageButtonClicked(inAppMessage, 0);

Test displaying a sample in-app message

Follow these steps to test a sample in-app message.

  1. Set an active user in the React application by calling Braze.changeUserId('your-user-id') method.
  2. Head to Campaigns and follow this guide to create a new in-app message campaign.
  3. Compose your test in-app messaging campaign and head over to the Test tab. Add the same user-id as the test user and click Send Test. You should be able to launch an in-app message on your device shortly.

A Braze in-app message campaign showing you can add your own user ID as a test recipient to test your in-app message.

A sample implementation can be found in BrazeProject, within the React Native SDK. Additional Android and iOS implementation samples can be found in the Android and iOS SDK.

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