The autocomplete doesn't work,see this solutions:http://stackoverflow.com/questions/5916026/autocomplete-has-stopped-working-with-android-sdk
In Eclipse go to
Window → Preferences → Java → Editor → Content Assist → Advanced
And check the boxes labeled “Java Proposals” and hit Apply.
Replace Ctrl with the Apple key on Mac.
shortcut function Ctrl-Shift-o Organize imports Ctrl-Shift-t load class by name Ctrl-Shift-r load non-class resource by name Ctrl-1 quick fix Ctrl-e Recently viewed files Ctrl-space auto complete Shift-Alt-r refactor:rename Shift-Alt-v refactor:move