> For the complete documentation index, see [llms.txt](https://partner-docs.covergenius.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://partner-docs.covergenius.com/xcover-journeys/integration/messaging/react-native.md).

# React Native

Send and receive journey events through a WebView bridge in React Native.

{% hint style="info" %}
There is no separate native SDK or bridge shipped by Cover Genius for React Native. You relay the same JSON envelope described on the main Messaging page through `react-native-webview`'s standard `onMessage`/`injectedJavaScript` mechanism.

This page shows the CG specific envelope and events; for the underlying bridge mechanism itself, see the official [react-native-webview guide: Communicating between JS and Native](https://github.com/react-native-webview/react-native-webview/blob/master/docs/Guide.md#communicating-between-js-and-native).
{% endhint %}

### Prerequisites

`react-native-webview` (or an equivalent WebView wrapper) installed and rendering the journey URL.

### Receiving events from the journey

Inject a script that forwards `window.postMessage` calls to React Native's `onMessage`, and handle them in `onMessage`:

```tsx
import React, { useRef } from 'react';
import WebView from 'react-native-webview';

const BRIDGE_SCRIPT = `
  window.addEventListener('message', function(event) {
    if (event.data && event.data.source === 'xcover-journeys') {
      window.ReactNativeWebView.postMessage(JSON.stringify(event.data));
    }
  });
  true;
`;

export function JourneyScreen() {
  const webViewRef = useRef<WebView>(null);

  const handleMessage = (event: { nativeEvent: { data: string } }) => {
    const { type, payload } = JSON.parse(event.nativeEvent.data);

    switch (type) {
      case 'CG_JOURNEY_READY':
        console.log('Journey mounted and ready');
        break;
      case 'CG_JOURNEY_COMPLETE':
        console.log('Journey finished:', payload.outcome, payload.policy_id);
        break;
    }
  };

  return (
    <WebView
      ref={webViewRef}
      source={{ uri: 'https://xcj.xcover.com/acme-travel/en/?country=AU' }}
      injectedJavaScript={BRIDGE_SCRIPT}
      onMessage={handleMessage}
    />
  );
}
```

### Sending events into the journey

Use `injectJavaScript` on the `WebView` ref to dispatch a `message` event the journey's listener picks up:

```tsx
function sendToJourney(webViewRef: React.RefObject<WebView>, type: string, payload: object = {}) {
  const js = `
    window.postMessage({ source: 'xcover-journeys', type: '${type}', payload: ${JSON.stringify(payload)} }, '*');
    true;
  `;
  webViewRef.current?.injectJavaScript(js);
}

// Example: ask the journey to hide itself
sendToJourney(webViewRef, 'CG_JOURNEY_HIDE');
```

### Origin and security notes

The journey's own trusted-origin validation is designed for browser `postMessage` traffic (checked against `event.origin`).

Inside a React Native `WebView` bridge, the risk model shifts instead to this: only your injected bridge script can call `ReactNativeWebView.postMessage`, and only code running inside the loaded page (the journey itself) can trigger it.

Load only the journey URL provided for your integration, and avoid attaching this bridge to a `WebView` that can navigate to arbitrary or user-supplied URLs.


---

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