When LoyaltyLion is embedded in a WKWebView, we’ll use the WKScriptMessageHandler
interface to send messages to your app.
You’ll need to register the listeners you want to support with your content controller, and then handle
them appropriately. The example below listens to the ready event to detect when the Loyalty Page has finished loading.
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class ViewController: UIViewController, WKScriptMessageHandler { override func viewDidLoad() { let contentController = WKUserContentController() // subscribe to LoyaltyLion events contentController.add(self, name: "sdkReady") // continue creating WKWebView instance... } func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) { if message.name == "ready" { print("LoyaltyLion SDK is ready") } }}
When LoyaltyLion is embedded in a WKWebView, we’ll use the WKScriptMessageHandler
interface to send messages to your app.
You’ll need to register the listeners you want to support with your content controller, and then handle
them appropriately. The example below listens to the ready event to detect when the Loyalty Page has finished loading.
Copy
class ViewController: UIViewController, WKScriptMessageHandler { override func viewDidLoad() { let contentController = WKUserContentController() // subscribe to LoyaltyLion events contentController.add(self, name: "sdkReady") // continue creating WKWebView instance... } func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) { if message.name == "ready" { print("LoyaltyLion SDK is ready") } }}
When LoyaltyLion is embedded in an Android WebView, you can add a LoyaltyLionBridge JavaScript interface which we’ll use to emit events.
The example below sets up a WebView, registers the LoyaltyLionBridge and registers a ready handler to detect when the Loyalty Page has finished loading.
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class MainActivity : AppCompatActivity() { lateinit var webView: WebView override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) webView = WebView(this) setContentView(webView) webView.settings.javaScriptEnabled = true webView.addJavascriptInterface(LoyaltyLionBridge(), "LoyaltyLionBridge") webView.loadDataWithBaseURL(null, "...", "text/html", "utf-8", null) } inner class LoyaltyLionBridge { @JavascriptInterface fun sdkReady() { Log.d("WebView", "LoyaltyLion SDK ready") } }}
