Prevent screenshots/video recording in flutter.

Nausheen Siddiqui

21 December 2023

Nowadays, user data security is a foremost priority. So, it is necessary to disable screenshots/ video recordings in the apps. You must have seen that a good number of apps like banking apps don’t allow you to take screenshots or record a video.

Now, let’s check how can we prevent screenshots/video recording in Flutter apps. In Flutter, we can use the flutter_windowmanager package to implement this functionality.

You may also check our Flutter app development services page.

Create a new flutter project and add this package to your project:

1	flutter_windowmanager: ^0.2.0

FlutterWindowManager.FLAG_SECURE: enables secure mode for the app, and disables screenshots, and screen recording.

if (secureModeToggle == true) {

await FlutterWindowManager.addFlags(

FlutterWindowManager.FLAG_SECURE);

} else {

await FlutterWindowManager.clearFlags(

FlutterWindowManager.FLAG_SECURE);

}

You can clear and add flags according to your requirements. This package also provides several flags that help us implement functionalities.

FULL CODE:

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

// This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key});

@override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  bool secureMode = false;

@override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("Disable Screenshot Demo"),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            secureMode? const Text("Secure mode is available.") : const Text("Secure mode is not available."),

ElevatedButton(
                onPressed: () async {
                  final secureModeToggle = !secureMode;

if (secureModeToggle == true) {
                    await FlutterWindowManager.addFlags(
                        FlutterWindowManager.FLAG_SECURE);
                  } else {
                    await FlutterWindowManager.clearFlags(
                        FlutterWindowManager.FLAG_SECURE);
                  }

setState(() {
                  secureMode = !secureMode;
                  });
                },
                child: const Text("Toggle Secure Mode ")),
          ],
        ),
      ),
    );
  }
}

void main() {

runApp(const MyApp());

}

class MyApp extends StatelessWidget {

const MyApp({super.key});

// This widget is the root of your application.

@override

Widget build(BuildContext context) {

return MaterialApp(

title: 'Flutter Demo',

theme: ThemeData(

primarySwatch: Colors.blue,

home: const MyHomePage(),

);

}

class MyHomePage extends StatefulWidget {

const MyHomePage({super.key});

@override

State<MyHomePage> createState() => _MyHomePageState();

}

class _MyHomePageState extends State<MyHomePage> {

bool secureMode = false;

@override

Widget build(BuildContext context) {

return Scaffold(

appBar: AppBar(

title: const Text("Disable Screenshot Demo"),

body: Center(

child: Column(

mainAxisAlignment: MainAxisAlignment.center,

children: <Widget>[

secureMode? const Text("Secure mode is available.") : const Text("Secure mode is not available."),

ElevatedButton(

onPressed: () async {

final secureModeToggle = !secureMode;

if (secureModeToggle == true) {

await FlutterWindowManager.addFlags(

FlutterWindowManager.FLAG_SECURE);

} else {

await FlutterWindowManager.clearFlags(

FlutterWindowManager.FLAG_SECURE);

}

setState(() {

secureMode = !secureMode;

});

child: const Text("Toggle Secure Mode ")),

);

}

OUTPUT:

When the secure flag is enabled, there is a notification to show inform regarding the disabled screenshot.

There is a drawback to this package that it doesn’t support iOS and as mentioned in the documentation there is no iOS support planned or possible.

Conclusion:

In this article, I have explained how to prevent screenshots/video recording in the Flutter app.

Thanks for reading this article.

If I got something wrong, let me know in the comments. I would love to improve.

Reference link:

https://pub.dev/packages/flutter_windowmanager

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