Question 167764 in Flutter Question posted in
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Prevent or detect screen recordings with audio in Flutter

I want to protect an app against any kind of recordings possible, may it be screenshots or screen-recordings. I know I can use the library flutter_windowmanager to set a flag preventing screenshots and making the screen-recordings show a black screen, but audio can still be captured anyway, and I want to prevent this to.

Is there any way to do this? Preventing screen-recordings or recording nothing at all both are good enough solutions.

I have tried using several options, for example the libraries audio_session and screen_capture_event, and the class WidgetsBindingObserver, all without success.

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2

Answers


  1. 0

    For Android:

    1. Locate your MainActivity class inside the embedded android project directory in your Flutter project.
    2. Add the following import to your main activity class:
    import android.view.WindowManager.LayoutParams;
    1. Add the following line to your MainActivity’s onCreate method:
    getWindow().addFlags(LayoutParams.FLAG_SECURE);

    For Example :

    @Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  
  getWindow().addFlags(LayoutParams.FLAG_SECURE); 
  
}

    For iOS:

    1. Locate your AppDelegate.m class inside the embedded ios project
      directory in your Flutter project.
    2. Add given below snippet to your AppDelegate.m class file
    - (void)applicationWillResignActive:(UIApplication *)application{
    self.window.hidden = YES;
}

- (void)applicationDidBecomeActive:(UIApplication *)application{
    self.window.hidden = NO;
}

    Example :

    @implementation AppDelegate

- (BOOL)application:(UIApplication *)application
    didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
  [GeneratedPluginRegistrant registerWithRegistry:self];
  // Override point for customization after application launch.
  return [super application:application didFinishLaunchingWithOptions:launchOptions];
}

- (void)applicationWillResignActive:(UIApplication *)application{
    self.window.hidden = YES;
}

- (void)applicationDidBecomeActive:(UIApplication *)application{
    self.window.hidden = NO;
}

@end

    see this great article by Gulshan Yadav: https://mrgulshanyadav.medium.com/prevent-screenshot-and-video-recording-in-flutter-93839325d66c

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  2. 0

    You can use screen_protector. and turn it on and off as below. it will avoid your app screen recording or taking screenshots

     void _preventScreenshotOn() async =>
      await ScreenProtector.preventScreenshotOn();
 void _preventScreenshotOff() async =>
      await ScreenProtector.preventScreenshotOff();
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