It should work that way, but force close doesn't help with android. Android launched programs to background automatically. It is a feature in android to launch programs quickly that are used often and it cannot be disabled.
Solution is to have device that is dedicated to flying and it isnt never connected to internet.
Here is a screenshot of my running apps.
Dji go is there in background even I havent launched it in week.
Tapatalk Cloud - Downlaoad File Screenshot_20170210-193301.jpg
Lähetetty minun SM-G930F laitteesta Tapatalkilla