Stop pre-installed screen recording apps from recording screen in android

Question

I am using flutter and have disabled normal apps from recording the screen. Here is the code

getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE,
WindowManager.LayoutParams.FLAG_SECURE);

The problem is there are some phones where screen recordings apps are pre-installed and above code can't stop them from recording the screen. So is there any other way to stop these apps from recording the screen? On other answers I saw that this was not possible but there are some apps on playstore which successfully achieve this. So there must be a way. I was thinking, as screen recording apps are drawn over , they might be detected through a piece of code hence we can show a pop up while screen recording app is drawn over. Is it possible ? If yes how can we detect if the app is drawn over our app. Thanks.

Answer 1

Adding this code to my MainActivity.java solved the problem:

protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if (!this.setSecureSurfaceView()) {
        Log.e("MainActivity", "Could not secure the MainActivity!");
    }

}



private final boolean setSecureSurfaceView() {
    ViewGroup content = (ViewGroup) this.findViewById(android.R.id.content);
    //Intrinsics.checkExpressionValueIsNotNull(content, "content");
    if (!this.isNonEmptyContainer((View) content)) {
        return false;
    } else {
        View splashView = content.getChildAt(0);
        //Intrinsics.checkExpressionValueIsNotNull(splashView, "splashView");
        if (!this.isNonEmptyContainer(splashView)) {
            return false;
        } else {
            View flutterView = ((ViewGroup) splashView).getChildAt(0);
            //Intrinsics.checkExpressionValueIsNotNull(flutterView,          "flutterView");
            if (!this.isNonEmptyContainer(flutterView)) {
                return false;
            } else {
                View surfaceView = ((ViewGroup) flutterView).getChildAt(0);
                if (!(surfaceView instanceof SurfaceView)) {
                    return false;
                } else {
                    ((SurfaceView) surfaceView).setSecure(true);
                    this.getWindow().setFlags(8192, 8192);
                    return true;
                }
            }
        }
    }

}

    private final boolean isNonEmptyContainer(View view) {
        if (!(view instanceof ViewGroup)) {
            return false;
        } else {
            return ((ViewGroup) view).getChildCount() >= 1;
        }
}

Import the required things.