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