I'd like to be able to integrate Android api docs into Eclipse so that, for example, if hover over an Activity class you get the appropriate Javadoc in a popup.
So to add Javadoc to Android you open up any Android project in Eclipse. Location the "Android x.x" library. In this right click on the android.jar file and select Properties. Choose the Javadoc location entry.
In the JavadocURL section I entered http://developer.android.com/reference/packages.html and clicked Validate but it gives the usual error of
Location might be invalid. Files 'package-list' and 'index.html' that are typically available at the root of the documentation created by the Javadoc tool have not been found
I've tried lots of variations of that URL but to no avail.
I also don't want to have to resort to downloading the source for Android.