createSysTimer

Start from API_LEVEL 4.0 . Please refer to API_LEVEL.

A system-level timer that can be registered in device app services and runs regardless of watch screen state.

Type

function createSysTimer(periodic: Periodic, period: Period, callback: Callback, arg?: Arg): Result

Parameters

Periodic

Type	Description
boolean	Whether to create a periodic timer

Period

Type	Description
number	Timer period (ms). For non-periodic timers, it represents delay duration, 0 means immediate execution

Callback

Type	Description
(arg?: unknown) => void	Callback function

Arg

Type	Description
unknown	Parameter passed to the callback function

Result

Type	Description
number	The ID returned by creating a system timer, used to stop the timer later

Example

import { createSysTimer } from '@zos/timer'

// Create a non-periodic timer that executes after 5 seconds
const timerId = createSysTimer(
  false,
  5000,
  (param) => {
    console.log('timer callback with param:', param)
  },
  'customParam',
)

// Create a periodic timer that executes every 10 seconds
const intervalId = createSysTimer(true, 10000, () => {
  console.log('interval timer callback')
})