title: the code of my android project was destroyed alone, but the source files are intact, I do not understand what's going on
body: <p>after generate my apk file, my code is become as shown in this picture <a href="https://prnt.sc/lbm72c" rel="nofollow noreferrer">https://prnt.sc/lbm72c</a> but I checked my source code and it is intact, how can i fix it?</p>
  
  <p>i remove build folder and idea but nothing has changed</p>
  
  <p>I think my problem comes from <a href="https://i.stack.imgur.com/1v0n5.png" rel="nofollow noreferrer">gradle</a></p>