- In eclipse, right click on your Android project and select Properties
- On the menu on the left, select "Java Build Path"
- On the right hand side, select the "tab" labelled "Libraries".
- Here you should see the Android SDK that you're targeting. For example: "Android 2.2".
- Click on the arrow to the left of the Android SDK to expand the sublevels.
- Find "Android.jar" and click on the arrow to the left of that one as well to expand it.
- You'll see a setting called "Javadoc location". Select that and then click on the "Edit" button.
- At the top, RESELECT the path to your javadocs. This is usually "path_to_android_sdk/android-sdk-mac_86/docs/reference/". I say RESELECT because even if it's right, you should browse and do it over anyway.
- Click on "validate". You should be all set now!
As it is told in this article http://hacksoflife.blogspot.com/2011/02/losing-javadocs-in-eclipse-solution.html Thanks to Chris
For some reason it is adding an static windows OS path starting with D:\...
This also correct all SDK targets.