Zepp OS Background & Scheduling

Context: Device App + App Service (both on the watch). API_LEVEL: [≥3.0] for app-service/alarm/notification; createSysTimer is [≥4.0]. Prereq: declaring the app-service module + permissions in app.json — see zepp-os-fundamentals.

Overview

Four tools, each for a different "later":

Need	Tool	Permission	Level
Run logic in the background, independent of the foreground page	`@zos/app-service`	`device:os.bg_service`	`[≥3.0]`
Wake the app at a wall-clock time (survives app exit)	`@zos/alarm`	`device:os.alarm`	`[≥3.0]`
Run a callback every N ms, even when the screen is off	`@zos/timer` `createSysTimer`	—	`[≥4.0]`
Post a notification to the watch's notification center	`@zos/notification`	`device:os.notification`	`[≥3.0]`

zepp-os-background-scheduling

Zepp OS Background & Scheduling

Overview

App Service — the background runtime