How does one decompile the android APK package?

From pc's transfer to shoes, we all know that if we recompile .exe, mobile development is now quite popular, so Android apps are too easy to decompile and can be converted to articles compiled by others. I hope it will be useful to you :)

Dex2jar and JD-GUI these two tools with learning Android is too reliable, so put up to share with you, the advantages of open source is good things to share with you.

Dex2jar: http://laichao.googlecode.com/files/dex2jar-0.0.7-SNAPSHOT.zip
JD-GUI:
Windows JD-GUI: http://laichao.googlecode.com/files/jdgui.zip
Linux JD-GUI: http://laichao.googlecode.com/files/jd-gui-0.3.2.linux.i686.tar.gz

1. First find classes. Dex in the android installation package

Change the APK file name to .zip, and decompress the classes file. dex file, which is compiled by a Java file and then packaged by the DX tool. Now we use the two tools mentioned above to export the Java source file in reverse direction.

2. Copy classes. Dex to the directory where dex2jar. bat is located.
In Windows:
In command line mode, locate the directory where dex2jar. bat is located and run dex2jar. Bat classes. Dex to generate classes. Dex. dex2jar. jar.

In ubuntu:

Locate the directory of dex2jar. Sh in the terminal and run
Sh dex2jar. Sh classes. Dex

You can generate classes. Dex. dex2jar. Jar

3. Run the JD-GUI tool (it is green without installation)

Open the JAR File above and you will see the source code