prongbang
This library is an incorrect way of detecting screenshots, apple warning!!!
As with all implementation which claims to detect "screenshots", this uses UITextfield and adds it as a sublayer, which apple is warning not to do, as views are supposed to be added as subviews not layers
Check response from apple's engineer in the below link
https://forums.developer.apple.com/forums/thread/722333
**There is no intended functionality to prevent a screenshot – screenshots are a user controlled feature intended to always be available. Consider that a sufficiently motivated user will simply use another device to take a picture of the screen and you cannot prevent that. Similarly by forcing a user to do that your creating a less secure situation, as the image will now be on 2 devices instead of 1 and will be harder for the user to maintain control over.
Additionally the code you use above is going behind UIKit to add a view's layer to another view's layer – this will cause subtle and not to subtle issues depending on exactly what your app ends up doing – it may even be the cause of your interaction issues. UIViews are intended to only be added to other views via addSubivew() and related methods, not via their layers.**
