At its I/O developer conference today, Google announced a new way for developers to build Wear OS watch faces, along with overall updates to the Android Wear platform, including Wear OS 4.
With this update, developers now get access to a new declarative format to design and build their watch faces, using the Jetpack Watch Face library, when they build watch faces for Wear OS 4 watches. Since the new format is based on this library, developers will automatically benefit from any updates to it, including future performance and battery improvements.
Since the new format is basically just an XML file, there is now no executable code involved in building these new watch faces. Hence, no code will be embedded in the watch face APK.
