We don’t “officially” support running android builds on our MacOS machines so your mileage may very.
Same goes for Fastlane, we don’t officially support doing this.
I would recommend starting a new topic to troubleshoot the fast lane errors since the original issue of not being able to install the android SDK was already resolved. We don’t have any insight to this but perhaps someone else in our community has run into this before.
Just for future reference (in case it helps anyone on a google search), I was able to install the Android SDK using the following circle.yml snippet. This caches the SDK so it doesn’t need to be re-installed with every build run.