UPI Intent in JS SDK

// Override webView(_:decidePolicyFor:decisionHandler:) method in your WKNavigationDelegate.
func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
guard let url = navigationAction.request.url, let scheme = url.scheme else {
decisionHandler(.allow)
return
}

      if (["upi",
          "tez",
          "gpay",
          "paytmmp",
          "phonepe",
          "amazonpay",
          "credpay",
          "bhim",
          "navipay",
          "mobikwik",
          "myairtel",
          "popclubapp",
          "super",
          "kiwi",
          "simplypayupi",
          "whatsapp-consumer"].contains(scheme)) {
              // Open UPI app from here
              if UIApplication.shared.canOpenURL(url) {
                  UIApplication.shared.open(url, options: [:], completionHandler: nil)
              } else {
                  //handle no app scenario
              }
              decisionHandler(.cancel)
              return
      }
      decisionHandler(.allow)
  }

// Override shouldOverrideUrlLoading method in your webview.
@Override
public boolean shouldOverrideUrlLoading(WebView view, String request) {
   if (request != null) {
         if((request.startsWith("upi://pay") 
             || request.startsWith("tez://") 
             || request.startsWith("gpay://")
             || request.startsWith("paytmmp://")
             || request.startsWith("phonepe://")
             || request.startsWith("amazonpay://")
             || request.startsWith("credpay://")
             || request.startsWith("bhim://")
             || request.startsWith("navipay://")
             || request.startsWith("mobikwik://")
             || request.startsWith("myairtel://")
             || request.startsWith("popclubapp://")
             || request.startsWith("super://")
             || request.startsWith("kiwi://")
             || request.startsWith("simplypayupi://")
             || request.startsWith("whatsapp-consumer://")
             || request.startsWith("postpe://")
             || request.startsWith("tnupi://")
          )){
                // Open UPI app from here
                final Intent intent = new Intent();
                intent.setAction(Intent.ACTION_VIEW);
                intent.setData(Uri.parse(request));
                PackageManager pm = getPackageManager();
                final List<ResolveInfo> resInfo = pm.queryIntentActivities(intent, 0);
                if (!resInfo.isEmpty()) {
                    startActivity(intent);
                } else {
                   //handle no app scenario
                }
               return true;
             }
   }
   return false;
}

// Override onShouldStartLoadWithRequest method in your webview.
onShouldStartLoadWithRequest={event => {
         const url  = event.url
         if ((url.startsWith("upi://pay")
         || url.startsWith("tez://") 
         || url.startsWith("gpay://")
         || url.startsWith("paytmmp://")
         || url.startsWith("phonepe://")
         || url.startsWith("amazonpay://")
         || url.startsWith("credpay://")
         || url.startsWith("bhim://")
         || url.startsWith("navipay://")
         || url.startsWith("mobikwik://")
         || url.startsWith("myairtel://")
         || url.startsWith("popclubapp://")
         || url.startsWith("super://")
         || url.startsWith("kiwi://")
         || url.startsWith("simplypayupi://")
         || url.startsWith("whatsapp-consumer://")
         || url.startsWith("postpe://")
         || url.startsWith("tnupi://")
         )) {
          Linking.canOpenURL(url).then(supported => {
                  if (supported) {
                        Linking.openURL(url);
                  }else{
                      console.log("Not able to open")
                  }
                });
                return false;
          }
        return true;
}}

// Override shouldOverrideUrlLoading method in your webview.
shouldOverrideUrlLoading: (controller, navigationAction) async {
          var uri = navigationAction.request.url!;
          if (["upi",
          "tez",
          "gpay",
          "paytmmp",
          "phonepe",
          "amazonpay",
          "credpay",
          "bhim",
          "navipay",
          "mobikwik",
          "myairtel",
          "popclubapp",
          "super",
          "kiwi",
          "simplypayupi",
          "whatsapp-consumer",
          "postpe",
          "tnupi"].contains(uri.scheme)) {
            print("Opening PSP app");
            await launchUrl(uri);
            return NavigationActionPolicy.CANCEL;
          }
          return NavigationActionPolicy.ALLOW;
}