Apk is the android package. R.java (auto generated file) when compiled along with .class (java classes) generated .dex file but these files are not deployable. .dex files are then reprocessed along with manifest file, and other resources (mp3, video, image) and .apk file is generated. This file is deployable.
These are typically new architects who lack experience. The highest-paid architects, those who've been on the job for years, earned over $119,000, and median pay for all architects was about $72,000. According to the American Institute of Architects, the size of the company has a lot to do with how much money an architect is able to earn.
Full-time Intern architects typically earn between $35,000 and $48,000 depending on experience prior to licensure and location of employment. Architects that have completed the internship period and are licensed can expect an average starting salary of between $40,000 and $60,000.