WebViewGold Documentation · Android
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UUID API

Identify app installations with a unique UUID appended to your WebView URL or retrieved via JavaScript.

The WebViewGold UUID API allows you to retrieve a non-personal, unique device ID (UUID - "Universally Unique Identifier") via JavaScript, which can uniquely identify an Android device. This feature can be helpful for:

  • Storing user-specific settings on the server
  • Maintaining session states
  • Recalling saved data on the client side

Privacy Note: Ensure compliance with local and international privacy laws when using this feature, as it involves device identification.

How to Retrieve UUID:

To retrieve the UUID from your WebView-based app, use the following code:

<a href="get-uuid://">Get UUID</a>
<a href="#" onClick="alert(uuid);">Show UUID</a>
                  
  • Get UUID: Requests the UUID from WebViewGold.
  • Show UUID: Displays the UUID via an alert for easy testing.

Alternative Method: Append the UUID to the WebView URL

If you prefer to include the UUID in the URL parameters, enable the UUID_ENHANCE_WEBVIEW_URL option in Config.java by setting it to true. This will automatically append uuid=XYZ to your WebView URL on the first request, allowing you to access the UUID directly in your web content:

  • Example: If your WebView URL is https://www.example.org, it will be requested as https://www.example.org?uuid=XYZ.
  • Note: Only the initial URL request will include this GET parameter, so consider saving it in a session or cookie if you need to reference it later in the app.

Automatically Inject UUID into JavaScript:

To automatically make UUID (and other variables) available in JavaScript across all pages without modifying URLs, set AUTO_INJECT_VARIABLES to true in Config.java. This allows you to access the UUID and other values directly within any page.

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