After my recent update to the latest ADT the autocomplete features of eclipse suddenly stopped working.
Luckily a quick search lead to the indispensable stackoverflow.
The way to fix it is to go to:
Window -> Preferences -> Java -> Editor -> Content Assist -> Advanced
And check the boxes labeled “Java Proposals” and hit Apply.
Thanks to dchimento for the answer.
Link to the question / answer here:
eclipse – autocomplete has stopped working with android sdk – Stack Overflow.