Customizing the Security Threat Response

Paste the sample code into ViewController.swift. The customization point is inside the UIAlertAction handler, before _exit(0).

inst._IsAbnormalEnvironmentDetectedAsync { tamper in
    if ( tamper > 0 ) {
        // ... build msg string (keep as-is) ...
        let alertController = UIAlertController(title: "AppSealing", message: msg, preferredStyle: .alert)
        alertController.addAction(UIAlertAction(title: "Confirm", style: .default,
            handler: { (action: UIAlertAction!) -> Void in
            #if !DEBUG
                // ▼ ADD YOUR CUSTOM LOGIC HERE ▼
                let userID = UserDefaults.standard.string(forKey: "userID") ?? "unknown"
                let payload: [String: Any] = [
                    "userID": userID,
                    "threatFlags": tamper,
                    "timestamp": Date().timeIntervalSince1970
                ]
                MyAnalyticsClient.sendSecurityEvent(payload) // fire-and-forget
                // ▲ END CUSTOM LOGIC ▲
                _exit(0)
            #endif
        }))
        self.present(alertController, animated: true, completion: nil)
    }
}

Apply the same pattern inside _NotifySwizzlingDetected for swizzling detection events.

Paste the sample code into ViewController.mm. The customization point is inside the UIAlertAction handler block, before _exit(0).

[inst _IsAbnormalEnvironmentDetectedAsync:^( int tamper ) {
    if ( tamper > 0 ) {
        // ... build msg string (keep as-is) ...
        UIAlertAction *confirm = [UIAlertAction actionWithTitle:@"Confirm"
            style:UIAlertActionStyleDefault
            handler:^(UIAlertAction * _Nonnull action) {
            #if !DEBUG && !defined(DEBUG)
                // ▼ ADD YOUR CUSTOM LOGIC HERE ▼
                NSString *userID = [[NSUserDefaults standardUserDefaults]
                                        stringForKey:@"userID"] ?: @"unknown";
                NSDictionary *payload = @{
                    @"userID": userID,
                    @"threatFlags": @(tamper),
                    @"timestamp": @([[NSDate date] timeIntervalSince1970])
                };
                [MyAnalyticsClient sendSecurityEvent:payload]; // fire-and-forget
                // ▲ END CUSTOM LOGIC ▲
                _exit(0);
            #endif
        }];
        [alert addAction:confirm];
        [self presentViewController:alert animated:YES completion:nil];
    }
}];

Apply the same pattern inside _NotifySwizzlingDetected for swizzling detection events.

Paste the sample code into AppDelegate.swift (which inherits FlutterAppDelegate). The structure is identical to the Swift sample, with one difference: the alert must be presented via DispatchQueue.main.async.

inst._IsAbnormalEnvironmentDetectedAsync { tamper in
    if ( tamper > 0 ) {
        // ... build msg string (keep as-is) ...
        let alertController = UIAlertController(title: "AppSealing", message: msg, preferredStyle: .alert)
        alertController.addAction(UIAlertAction(title: "Confirm", style: .default,
            handler: { (action: UIAlertAction!) -> Void in
            #if !DEBUG
                // ▼ ADD YOUR CUSTOM LOGIC HERE ▼
                let userID = UserDefaults.standard.string(forKey: "userID") ?? "unknown"
                let payload: [String: Any] = [
                    "userID": userID,
                    "threatFlags": tamper,
                    "timestamp": Date().timeIntervalSince1970
                ]
                MyAnalyticsClient.sendSecurityEvent(payload) // fire-and-forget
                // ▲ END CUSTOM LOGIC ▲
                _exit(0)
            #endif
        }))
        DispatchQueue.main.async {
            self.window?.rootViewController?.present(alertController, animated: true, completion: nil)
        }
    }
}

Tip: Prefer calling your server directly from the Swift layer rather than routing through a Flutter method channel — the app is about to exit and the channel call may not complete.

Paste the sample code into index.js. There are two detection points — apply customization to both.

1. Initial check (checkSecurityThreat)

{ text: "Confirm", onPress: () => {
    // ▼ ADD YOUR CUSTOM LOGIC HERE ▼
    fetch('https://your-server.com/security-event', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
            userID: getUserID(),
            threatFlags: security_threat,
            timestamp: Date.now()
        })
    }).catch(() => {}); // fire-and-forget
    // ▲ END CUSTOM LOGIC ▲
    AppSealingInterfaceBridge.ExitApp();
}}

2. Periodic check (AppSealingPeriodicCheck)

{ text: "Confirm", onPress: () => {
    // ▼ ADD YOUR CUSTOM LOGIC HERE ▼
    fetch('https://your-server.com/security-event', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
            userID: getUserID(),
            threatCode: ret,
            timestamp: Date.now()
        })
    }).catch(() => {});
    // ▲ END CUSTOM LOGIC ▲
    AppSealingInterfaceBridge.ExitApp();
}}

Note: The sample checks Platform.OS === 'ios' before calling detection functions. Android behavior is handled separately by the native Android SDK layer.

AppSealingPlugin.cpp is already included in the SDK. The alert dialog and exit(0) call are wrapped in a #if 0 block (disabled by default).

To enable and customize:

1. Open AppSealingPlugin.cpp from the SDK
2. Change #if 0 to #if 1
3. Add your custom logic before exit(0)

AsyncTask(ENamedThreads::GameThread, [Fs, tamper]()
{
#if 1  // <-- Change from 0 to 1 to enable
    // ▼ ADD YOUR CUSTOM LOGIC HERE ▼
    TSharedRef<IHttpRequest, ESPMode::ThreadSafe> Request =
        FHttpModule::Get().CreateRequest();
    Request->SetURL(TEXT("https://your-server.com/security-event"));
    Request->SetVerb(TEXT("POST"));
    Request->SetHeader(TEXT("Content-Type"), TEXT("application/json"));
    FString Body = FString::Printf(TEXT("{\"threatFlags\":%d}"), tamper);
    Request->SetContentAsString(Body);
    Request->ProcessRequest(); // fire-and-forget
    // ▲ END CUSTOM LOGIC ▲

    FText title = FText::FromString(TEXT("Security Threat Detected"));
    if (FMessageDialog::Open(EAppMsgType::Ok, FText::FromString(Fs), &title)
            == EAppReturnType::Ok)
        exit(0);
#endif
});