Privacy feature: Disallow screenshots (Secure flag)

[gsantner]

General information

• App version: 2.5
• System: Android 11

Description

• The goal is to add feature to app to disallow screenshots of the running Markor app (so other apps cannot screenshot or see what you write).
• Should be a settings option to enable/disable globally for all activities in the Markor app
• Make it enabled by default
• Optionally, if you find some other security/privacy improvements&tweaks, can also be added (comment if you have something)

Check documentation for FLAG_SECURE and related Android Developers security/privacy guides.
Overall it should be quite easy to implement this, settings are more or less copy paste from existing checkboxes 😉 .

[Ln11211]

@gsantner, As it reads good first issue and you said it's more or less copy paste, canI try this ?

[Ln11211]

@gsantner , I found a nice resource and it says that you can use a built in mechanism to prevent screenshots. Check out the link and let me know if we can use this to implement it.

I also found one in stackoverflow that prevents taking screenshot when an app goes to background..

But, this one from geeksforgeeks seems good and simple, geeksforgeeks .

I would like to go with the code by geeksforgeeks...

[gsantner]

yes java FLAG_SECURE is what you need.

[simonesummo]

@unnikrishnan2002 any update on this? Otherwise I will dig into it.

[gsantner]

@Zoo-M0
It happens every year in october (/hacktoberfest) that many people want to start on many things, but mostly nothing happens.
Unless there is merge request open, generally consider all issues/bugs/features open. Currently there are 0 open ... so everything 😄 .

[simonesummo]

@gsantner perfect, I will look into it