How to detect when capturing a screen using (MediaProjection, VirtualDisplay) if the window or an app has SECURE_FLAG in Android?

Question

I'm trying to capture screenshots in my android app using MediaProjection by creating VirtualDisplay. It's working fine except in some banking or streaming apps where I get a black screen. I know that it's because in those apps SECURE_FLAG is applied.

My question is, How to detect in my app that the app I'm trying to screenshot has SECURE_FLAG?