Easiest way to create a subscription provider?

@freqsc wrote:

I would like to create a simple service that listens to accelerometer data. How can I subscribe to these values from a page?

This is my page:

import { Component } from '@angular/core';
import { NavController } from 'ionic-angular';
import { AccelerometerProvider } from '../../providers/accelerometer/accelerometer';

@Component({
  selector: 'page-home',
  templateUrl: 'home.html'
})
export class HomePage {

  constructor(public navCtrl: NavController, private accelerometer: AccelerometerProvider) {

  }

}

and this is my service:

import { Injectable } from '@angular/core';
import { DeviceMotion, DeviceMotionAccelerationData } from '@ionic-native/device-motion';
import { Observable } from 'rxjs/Observable';

@Injectable()
export class AccelerometerProvider {

  constructor(private deviceMotion: DeviceMotion) {
    console.log('Hello AccelerometerProvider Provider');
  }

  start() {
    this.deviceMotion.watchAcceleration().subscribe((acceleration: DeviceMotionAccelerationData) => {
      let x = acceleration.x;
      let y = acceleration.y;
      let z = acceleration.z;
    });
  }

}

What I want is just have access to x, y, z values from my page, each time a new subscription comes.
I suppose it is a n ‘observable’ thing but I am fairly new to this technology. I would appreciate any help.

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