Bugfix: Don't crash when hitting the back button on the readout activity.
Bugfix: Don't crash when hitting the back button on the readout activity.

onyxbits/sensorreadout,christianverdonk/sensorreadout,0359xiaodong/sensorreadout,0359xiaodong/sensorreadout,christianverdonk/sensorreadout,onyxbits/sensorreadout