Unsure of what exactly you mean, I can tell you that there is now way to de-compile an apk into an aia source file.
Did you ever save an aia to your PC? You may have to use a previously saved aia to recover your programming.
It is extremely important for developers to save their projects to their PCs frequently and especially before you start doing
some complex programming when things might go wrong. Consider, AI2 continually saves your work..that means if you
make a mistake in programming and it messes up your development logic, you can recover. Also, consider saving as... as an option.
Sorry about your problem. Perhaps, there is little to be done, however, as Enis requests, provide more information and perhaps there is
a way to help.
Regards,
Steve