How do I port my watch face to support multiple devices?

Check out this content for having different resources for different watches:

[https://developer.garmin.com/connect-iq/core-topics/build-configuration/]

As far as having different code based on each device (family), it depends on how you want to structure your code and how much memory you need to save.

One way is to use exclude annotations to have different versions of the same function for different watches:

[https://developer.garmin.com/connect-iq/core-topics/build-configuration/#feelingexcluded] (Scroll to "Feeling Excluded" if you're not taken there automatically)

The downside here is that exclude annotations only work at the symbol level (e.g. function, member variable, etc.), so you may find yourself copying-and-pasting entire functions with just small differences between versions (if you want to save memory), or creating tiny helper functions for that one difference between devices (which is better for code maintenance but uses up precious memory on code).

Another more granular approach would be to call dc.getWidth() and dc.getHeight() at run-time, to determine your screen dimensions, so that you could run different code for 240 x 240 watches vs 260 x 260 watches (for example).

Exclude annotations work fine, but you may find that your jungle file becomes unwieldy if you need to differentiate between all the different quirks and traits of various devices (like differences between CIQ support, differences between available memory, random quirks like the fact that VA3 and 935 have different fonts even though they have the same size screen, etc.)

Np.

My bad, I edited the post to fix the link.

See https://forums.garmin.com/developer/connect-iq/b/news-announcements/posts/a-whole-new-world-of-graphics-with-connect-iq-4

for compile time image scaling, as that can help and simplify with bitmaps.

When it comes to a few things, "has" can be really handy