NativeScript Android battery service

battery.android.js

'use strict';

const application = require('application');

const observable = require('data/observable');

const events = require('~/common/events');

const debug = require('nativescript-debug')(__filename);

var service = new observable.Observable();

service.value = null;

application.android.registerBroadcastReceiver(android.content.Intent.ACTION_BATTERY_CHANGED, function onReceiveCallback(context, intent) {
  var level = intent.getIntExtra(android.os.BatteryManager.EXTRA_LEVEL, -1);
  var scale = intent.getIntExtra(android.os.BatteryManager.EXTRA_SCALE, -1);
  var value = (level / scale) * 100.0;
  this.value = value;
  this.notify({
    eventName: 'update',
    object: value,
  });
}.bind(service));

module.exports = service;