Android Java source java files opens as png files something

Question

Today Android Studio started to behave strange. Source java files opens as png files something. I can build and run the app and if I look in the file system the java files looks

Answer 1

I found a solution that worked for me. I hade to open every java source file and all xml files into a text editor(Notepad++) and change something then save the file back to origin.

Now Android Studio detect all files as normal