I'm collecting all the RPi OS that o can because some of them have functions and apps that others haven't, and I think that it can be useful. Recently I've created a SD with last Android image on their website, but when I put RPi working, just show me prompt screen and next just dark screen during all the time that it keep on.
How far you'll get with any android release depends on the version of the release and the type of Raspberry Pi you have.
You can find most of the details over at The Android Pi wiki
You will find that depending on those factors your mileage may vary.
Besides this, there isn't really a publically available android build that will run on the RPI behaving decently.
All of them lack core features and/or are terribly slow.