WHAT?even tried unpacking an apk scanner and converting it ,but gave up .....
Yes i found this link too, but this is only a way for decompiling the apk-files into single files to manipulate them. I've just tried to convert an Adobe Reade and some other small programs, but it doesn't work, phone says only "jar-file is wrong". Understandable, all the program design and so on is in the other files, not in the classes.dex which you can convert to *.jar-file....not really my thing , but i read a tutorial somewhere on how to , downloaded various android software and set about it . did not manage to convert it to jar ,but i did try . will see if i can find the link .there is a lot of software to dowload mark
http://www.fulltechreview.com/2010/12/how-to-convert-apk-file-into-java-files.html