Total Commander

I have two questions:

1. If I have several images in a folder and open one of them, I'm not able to swipe after that to see all of them. I'm able only to close the opened one and after open another. I'm sure before I could. Is it a new android policy and cannot be circumvent?

2. Wheen I open an image I can see only two buttons: info and share. Info shows nothing, only filename. Is it possible to add here "delete" button? Would be convenient to work with files. And if possible now information under "info" button.

1. Yes, Android now requires that apps get sent a "content" URL instead of a "file" URL. Most viewers can't access file URLs any more. "content" URLs only allow to access that specific file, not the folder containing the files.
You can try defining an internal association where content://url is unchecked to see whether the viewer supports file URLs.

2. This depends on the viewer you use.