AppService

Start from API_LEVEL 3.0 . Please refer to API_LEVEL.

Register a page in the Mini Program, specify the lifecycle callback for the current page, etc. Each page file must call the Page() constructor only once.

info

permission code: device:os.bg_service

Type

function AppService(option: Option): Result

Parameters

Option

Property	Type	Required	DefaultValue	Description	API_LEVEL
state	object	N	-	A data object mounted on the appService instance that can be used to store the current state of the service	3.0
onInit	(params?: string) => void	N	-	This function is triggered when the service is started. If the service is started with params, the params string can be obtained in the onInit method	3.0
onEvent	(params?: string) => void	N	-	onEvent is used to listen for system events, and event-related parameters are passed through params	3.0
onDestroy	() => void	N	-	The onDestroy lifecycle function is triggered when the service is destroyed	3.0

Result

Type	Description
unknown	AppService instance

Example

appService.js

AppService({
  state: {
    text: 'Hello Zepp OS',
  },
  onInit() {
    console.log('onInit')
  },
  onEvent(event) {
    console.log(event)
  },
})