Watch face: Run update only when an activity is logged

With a watch face, most of the time onUpdate is only called once a minute. but for a short time after something like a gesture, it will be called every second.  On some devices, before onUpdate is called, the screen will be cleared, so you really want to draw the entire screen each and every time onUpdate is called.

Drawing every time onUpdate is called makes sense, but there's other processing that would ideally be done less frequently that generates the data for the watch face to show.

ideally I would generate this data after an activity is finished and then just render the stored data in onUpdate.

Any thoughts on my previous response? Thanks!

I've never used this, but for an app with a background service you could try using

registerForActivityCompletedEvent()

and then in the background service,

onActivityCompleted()