[decompiler] how to use DEXtoJar

  1. Download dex2jar https://code.google.com/p/dex2jar/downloads/list
  2. Run dex2jar on apk d2j-dex2jar.sh someApk.apk
  3. open jar file in JD GUI http://jd.benow.ca/

Follow this guide: https://code.google.com/p/dex2jar/wiki/UserGuide

--Update 10/11/2016--

Found this ClassyShark from Google's github pretty easy to view code from APK.

https://github.com/google/android-classyshark

// make sure that you downloaded release https://github.com/pxb1988/dex2jar/releases (for the ppl who coldnt find this link in /dex2jar/downloads/list