Active Screen State Flag

This has to be easy...

I want to set a flag to indicate if my data field is currently actively displayed -vs- hidden (say, you swipe left/right to show a different screen).

I know onUpdate fires every second (data field).

For a data field, is onShow() (set flag to true) and onHide() (set flag to false) the best approach? As a failsafe, I could also set the flag to true in onUpdate() (every second)?

0 jim_m_58 over 3 years ago

If I recall, onHide() is never called in a DF

0 DaveBrillhart over 3 years ago in reply to jim_m_58

I was afraid of that... So what would you recommend as a technique to flip the flag to FALSE when the DF is on a hidden screen? I could set if false in compute every second, and back to true in onUpdate every second... But that is silly. And we don't know which one will be called first. Alternatively, I can stuff the logic into onUpdate that I only want run when the DF is showing, but that isn't a clean solution either.