What are the practical differences between offscreen bitmaps and layers?

I've been using offscreen bitmaps for independent bits on the screen and for caching things that I don't want to recalculate on each onUpdate.

I haven't seen a need for layers so I'm wondering when to use layers instead of bitmaps?

Thanks

0 Andreas Huggel 1 day ago

On an analog watchface, layers allow refreshing indicators, like the heart rate, more often than once a minute, even in low-power mode (on a separate layer, without having to worry about the watch hands).

Personally, I also think that using layers results in more straightforward code.

0 flocsy🤠 1 day ago

I think the difference between layers and offscreen bitmaps is similar to the difference between using layouts or directly drawing on the dc in onUpdate.