Start.io ads in your app (WebView)

Can Start.io be used in a WebView?

Start.io offers native SDKs (Android, iOS, Unity, Flutter) — the latest Android version on Maven Central is 5.4.0 — and has no SDK for web pages. So the ad cannot be loaded inside the HTML: the app that opens the project in a WebView shows it. The Ads (Start.io) extension is the bridge: the project asks, the app shows and reports back. In the editor, ads are simulated.

In the project

• show full-screen ad (interstitial), rewarded video, splash or exit.
• show the banner at the bottom/top.
• when the ad gives the reward → give the extra life; when the ad is closed → continue the game.
• wait at least 60 seconds between full-screen ads avoids annoying the player.

In Kodular / App Inventor

1. Export the project as HTML and open it in the WebViewer (file in Media or an https address).
2. Add a Start.io extension and initialize it with your App ID (Start.io publisher portal).
3. WebViewer.WebViewStringChange event: the value is a JSON like {"blocosia":"anuncio","acao":"mostrar","formato":"recompensa"}. Read acao (mostrar, banner, carregar, teste, consentimento) and formato (intersticial, recompensa, splash, saida) and call the extension block.
4. In the extension events (closed, reward, failed), notify the project: WebViewer.RunJavaScript (App Inventor) or Evaluate JavaScript (Kodular) with blocosiaAnuncio('recompensa'). Events: pronto, carregado, mostrado, fechado, recompensa, falhou.

Android Studio

webView.addJavascriptInterface(object, "BlocosIAAnuncios") with the method @JavascriptInterface pedido(String json), and webView.evaluateJavascript("blocosiaAnuncio('fechado')", null) to answer. On iOS: webkit.messageHandlers.blocosiaAnuncios.

Be careful

• For apps aimed at children, Google Play rules (Families program) only allow ad SDKs certified for that audience: check whether Start.io is accepted before publishing.
• Ask for user consent (GDPR/LGPD) and use test ads while developing.