Trying to tweak the Genesys Cloud Web Messaging widget in our Android app. We need to change the launcher button color and move it to the top-left corner instead of the default bottom-right. The WebMessagingConfig builder in the Kotlin SDK doesn’t seem to expose these UI properties directly. Is there a specific JSON payload I need to pass to the deployment config, or am I missing a method call? The current setup just renders the standard blue button.
Docs state: “The Web Messaging SDK allows you to customize the appearance and behavior of the chat widget through the WebMessagingConfig object.”
You’re looking at the wrong layer. The Kotlin WebMessagingConfig builder is strictly for initialization parameters like the organization ID and deployment ID. It doesn’t handle UI rendering. That’s handled by the CSS injected into the web view or the native container if you’re bridging.
If you’re using the standard web view approach, you need to inject custom CSS into the page that hosts the widget. The launcher button has a specific class selector. You can override the background-color and position properties there.
Here’s the CSS snippet you’ll need to inject via your Android WebView’s addJavascriptInterface or by modifying the HTML payload before it renders:
.purecloud-chat-launcher {
background-color: #FF5733 !important; /* Your custom color */
bottom: auto !important;
top: 20px !important; /* Top position */
right: auto !important;
left: 20px !important; /* Left position */
}
The SDK doesn’t expose these because the widget is essentially an iframe or injected DOM element. You have to style it like any other web component. Don’t try to pass this in the JSON config for the deployment; that’ll just get ignored by the client.