How to get source code for android.jar

Question

I'm not actually working on android devices, but I'd like to use the android java std lib for a project of mine. I'm extracting the android java std lib from the android ADT here:

http://developer.android.com/sdk/index.html

After unzipping the bundle, it's in

adt-bundle-windows-x86_64-20130729\sdk\platforms\android-18\android.jar

However, when I open this up in Intellij, it doesn't show any source code: all methods are just labelled as "compiled code"

Is there any way to get the source code (in a jar or otherwise) for the android.jar so I can hook it up to the IDE so I can nicely browse the source code of the standard library? I've dug through the sdk download bundle and haven't found anything.

-Haoyi

Answer 1

but I'd like to use the android java std lib for a project of mine

I have no idea why you think that would work, any more than trying to use a Windows DLL on Linux.

Is there any way to get the source code (in a jar or otherwise) for the android.jar so I can hook it up to the IDE so I can nicely browse the source code of the standard library?

The source code for Android is at the Android Open Source Project. The source code for the android.jar is mostly in the platform_frameworks_base repo (GitHub mirror), but the JAR is really an output of a firmware build.

Answer 2

In your Android SDK root directory, go to the sources folder. Here you will find the source files for the different platforms you have downloaded.

Note: This gives you the Java code for Android libraries such as Activity

Answer 3

Unpacking the jar is way more than you need to worry about. Android is open source, so you can get everything you need online. To start, you can browse most of the source on Android's GitHub account, or download the source tree on the Android Open Source Project website. You can also view most (if not all) sources on GrepCode.

If you really want to go through the trouble of extracting the jar and decompiling the source, you can use JD-GUI.