When I was running iOS I used to fly using GO4 out to the point I wanted to be at, quit the GO4 app, launch Hangar360 and it’d do the rest. Then I’d close Hangar, re-open GO4 and fly home 
I know!!! If ever they make a droid version that runs on the CrystalSky, my life will be complete 
Did you see @Davo_101’s post earlier re the release of the Mavic Air SDK??
Excellent news!!
It’ll mean Litchi, Hanger, etc will all be compatible soon!