(Tools used to decompile APK files. The detailed tutorial address is liangruijun.blog.51cto/3061169/690370. This material includes the following attachments:
apktool-install-windows-2.1_ r01-1.zip
apktool.jar
dex2jar.zip
DJJavaDecompiler.zip
jd-gui-0.3.3.windows.zip
.....)