Searching the web and the Android Team announcement I couldn\'t find The answer. Will Eclipse ADT be deprecated when Android studio reach its first stable version? The funni
Although Xavier Ducrohet, who leads the Android Tools group, has promised to keep ADT alive, this cannot happen indefinitely because he did not double his tool development staff when Android Studio development began. Google regularly drops products, so it will not be a precedent for them to drop ADT. The unknown is when that will happen.
The update to this is yes, it will be no longer supported by end of year 2015 based on the official Android developer blog post: http://android-developers.blogspot.com/2015/06/an-update-on-eclipse-android-developer.html
Intellij had support for Android Development even when every how-to was assuming use of the Eclipse ADT.
It appears to me that pretty much nothing had to change on Google's end to make this happen except to make the export functionality in Eclipse more digestible and you get that in the latest SDK Manager. I'm not an Eclipse user, but this leads me to believe that support for Eclipse would require work to remove, so I doubt it's going away. (E/A Much Later: It apparently required work to support and so it did go away)
Android Studio is essentially a stripped down to the Android Specific stuff of of what will be released as the Intellij IDEA 13 Commmunity Version (which is also free).
If you find you like Android Studio, and want to do more Java development with something like it, look at the IDEA 13 EAP. In December (the targeted release date), you can either pay for the ultimate version or use the free community version, whichever suits your needs.
Yes, but as mentioned in the Android Developers Blog there is Andmore which is the spiritual successor of Google's ADT, the Adroid Development Tools, for Eclipse.
I am still not 100% sure about android studio. What really don't like are:
To be honest I found Eclipse classic + ADT + nothing more, just this two things much more simple and cleaner that Android studio.
My reason for wanting to stay with Eclipse is that we also develop our server side with it , so we have one workspace where we control it all. Android Studio is a good option for app-only developers . Eclipse is totally free and it is the most popular Java IDE for years , unlike IntelliJ - unless you crack it .
My fear is , that they will not invest enough effort in ADT as most app developer would move to Android Studio , there are already several bugs I opened for the ADT project in its bugs tracking system , and it would be very upsetting to see things that works properly in Android Studio and not in ADT .