Google just released one more useful tool for developers, called: ”Sources for Android SDK” , for the Android Source Developement Kit.

Rupert Rawnsley
The Android SDK Manager (which is a download manager for Android developers) just added Sources for Android SDK to the latest release. This allows you to easily step through the source code when debugging, which was sort of possible before, but frankly a huge hassle to get working.

According to cryptic comment 149 near the bottom of this discussion http://code.google.com/p/android/issues/detail?id=979, they will be adding this to all releases going forward, but not retrospectively.

Originally posted by Rupert Rawnsley on Google+.