The three tools required and what they do are:
| tool name | Tool action | Tool download address |
| apktoos | Decompile the apk file into the original directory file | https://code.google.com/p/android-apktool/downloads/list |
| dex2jar | Convert the dex file to a jar file | https://code.google.com/p/dex2jar/downloads/list |
| jd-gui | Convert jar to java source code | http://jd.benow.ca |
Decompilation steps:
1. Put the apk to be compiled in the same folder as apktools.bat, and the path corresponding to cd /d + comes to this folder, and execute
apktools.bat d + apk name.apk The corresponding package generated contains xml resources such as res and layout and other resource files.
2. View the class source code (it has not been obfuscated and encrypted, and the decompiled java code may not be understood in the case of obfuscation and encryption)
①Change the apk suffix to zip and then decompress it, copy the decompressed classes.dex to the same folder as dex2jar.bat,
cd /d + The corresponding path comes to this folder, and classes_dex2jar.jar is generated after executing dex2jar.bat classes.dex .
② Pull classes_dex2jar.jar to jd-gui.exe and open it to see the java code.