Hi Damon,
we do not support Sandboxed API on Android at this time. There is an internal version that does, but that code is somewhat experimental. Android also does not support unprivileged user namespaces, which makes this configuration slightly less secure (which to an extent is compensated by Android apps running in selinux based sandboxes).
If you need sandboxing on Android, look into
minijail or into structuring your app in a way that the parts to be sandboxed are implemented as background service.
Christian