Data flow from Arduino to Android problem SOLVED
I am using Joystick BT Commander on an Android Tablet. This allows Apps to be closed by swiping the minimised app icon off the screen. This was the problem.
When I closed the App by using back button (hairpin arrow) and confirm “Total RC Commander - close this controller” and then re-open the App it works OK. Data received back from Arduino and Button 5 is in push mode. Apologies for inconvenience and thanks for your time. It is great to see the care and level of attention that you provide to the users of your App. Again many thanks - Brilliant App Bob