Currently and officially google will not release ADT for Eclipse anymore. I want to know are there any methods to use eclipse for android development now days?
At the moment, there appears to be nothing stopping you from using Eclipse. Lots of developers seem to be using Eclipse, based on questions asked here at Stack Overflow.
In the long term, Eclipse is building Andmore, which will be their recommended Eclipse-based solution. Presumably, Eclipse will support this option. Right now, you can get the "p2" milestone, with a 1.0 coming perhaps mid-2016. I have not tried Andmore and therefore cannot comment on how it is behaving.