Finding Downloaded APK files in nexus 5 I have a unrooted nexus 5 and i want to analyze google play downloaded app source code but i cannot find any of my apps when i connect my phone to the computer...
any one know how can i: 


Save google play app without extracting the apk file...
finding the app when connecting in to computer.
check the app source code in the computer


the app: https://play.google.com/store/apps/details?id=com.ignite.lottosheli
Achieving your request ("check the app source code") is simply not possible since an APK doesn't contains any source code, only Java bytecode and/or native compiled code for different processors architectures.

More details here: Android application package