Workaround English Link: http://stackoverflow.com/questions/12628439/how-can-i-enable-javadoc-for-the-android-support-library
One: If you join the properties file
Two: The contents of the properties file only one line: SRC=D:\\ANDRIOD_ADT\\SDK\\EXTRAS\\ANDROID\\SUPPORT\\V4\\SRC
Three: Refresh the project, or execute close project on the item, Openproject.
Four: When I finished the above steps, still can not use CTRL + click class to enter the source code, the solution is to open the Search Class dialog box, my words shortcut keys is ctrl+shit+h, search jar inside a class, For example Android.support.v4 in the Listfragment, click can see the source code. Then you can directly click on the class to see the source. (A similar bug is really a waste of the programmer's Pit)
The Jar of this class file belongs to Container ' Android Dependencies ' which does isn't allow Modifica