Question about background service Bip 6

[brenopenalmeida]

I’m creating an app to run on the Bip 6. The app is simple—just for experimenting with background execution. When it’s launched for the first time, a prompt appears asking to allow background operation; after granting permission, the Bip 6’s App Settings correctly show that the app is allowed to run in the background. However, when I check the Battery options, it reports that no app is running in the background, and yet if I launch the app again after it’s been sent to the background, it still receives the notification “service iniciado true.”

Below is the full script. Could someone help me?

app-service/bg.js

import { HeartRate } from '@zos/sensor'

AppService({
onInit() {
console.log('BG Service onInit: iniciando sensor HR')
this.hr = new HeartRate()
this.hr.onChange(info => {
console.log(HR = ${info.bpm} bpm)
})
this.hr.start()
},
onDestroy() {
console.log('BG Service onDestroy: parando sensor HR')
if (this.hr) this.hr.stop()
}
})

page/index.js

import hmUI from '@zos/ui'

Page({
onInit() {
console.log('index onInit: serviço BG já iniciado (ou em execução)')

hmUI.createWidget(hmUI.widget.TEXT, {
  x: 40, y: 120, w: 400, h: 80,
  text: 'Serviço BG ativo!',
  text_size: 24,
  align_h: hmUI.align.CENTER_H,
  color: 0xffffff
})

}
})

page/start.js

import { queryPermission, requestPermission } from '@zos/app'
import * as appService from '@zos/app-service'
import hmUI from '@zos/ui'

const BG_PERM = ['device:os.bg_service']
const SERVICE_URL = 'app-service/bg'

Page({
onInit() {
// 1) checa se já temos permissão
const [status] = queryPermission({ permissions: BG_PERM })
if (status === 2) {
// ok, já está autorizado
this._startBgService()
} else {
// pede permissão
requestPermission({
permissions: BG_PERM,
callback: ([res]) => {
if (res === 2) {
this._startBgService()
} else {
hmUI.showToast({ text: 'Permissão negada' })
}
}
})
}
},

_startBgService() {
hmUI.showToast({ text: 'Iniciando serviço BG…' })
appService.start({
url: SERVICE_URL,
param: '',
complete_func: info => {
hmUI.showToast({ text: Serviço iniciado: ${info.result} })
// fecha a UI imediatamente
hmUI.exit()
}
})
}
})

app.js

// app.js
App({
onCreate(options) {
console.log('App criado');
},
onDestroy() {
console.log('App destruído');
}
});

app.json

{
"configVersion": "v3",
"app": {
"appId": 20001,
"appName": "BG Only",
"appType": "app",
"version": { "code": 1, "name": "1.0.0" },
"icon": "icon.png",
"vender": "zepp",
"description": "Exemplo mínimo BG"
},
"permissions": [
"device:os.bg_service",
"data:user.hd.heart_rate"
],
"runtime": {
"apiVersion": { "compatible": "4.0", "target": "4.0", "minVersion": "4.0" }
},
"targets": {
"common": {
"module": {
"page": { "pages": ["page/start"] },
"app-service": { "services": ["app-service/bg"] }
},
"platforms": [{"name":"bip6","deviceSource":9765121}],
"designWidth": 480
}
},
"defaultLanguage": "en-US"
}

link: https://github.com/brenopenalmeida/teste_segundo_plano_zepp_os.git

[silver-zepp]

Try this example. Make sure to add Bip 6 into it before running.

bg-service-with-zml-example.zip

[brenopenalmeida]

I understood how it works, it helped me a lot. Thank you very much!

[SashaCX75]

@silver-zepp Even if an application is running in the background, the battery settings always say that 0 applications are running in the background. Is it a bug or do I misunderstand what should be displayed in this line?