Android Question IDE: how to find the used picture resource

[peacemaker]

HI, All

If some image file exists in "Files" folder of old-old project, and i cannot find where the file is used in the source code - how to find where ?
Layouts are also primitive, and i don't see where used...
But if to delete the file - IDE shows error that file is absent.

 

[DonManfred]

But if to delete the file - IDE shows error that file is absent.

did you refresh the files tab after you deleted a file? SYNC Button

 

[peacemaker]

Hmmm, seems, file is indeed not used at all