Pushing arrays in ionic 4

manpreet Best Answer 2 years ago

I have a Ionic App and I am trying to get latitude and longitude from data api as Json format, for a flight route. The data contains arrays . I want to push arrays into Google maps polyline to get flight route on map but I get an error when I run the app.

My full code:

export class HomePage{
  map: GoogleMap;
  latitude: any;
  longitude: any;
  constructor(
    public toastCtrl: ToastController,
    private platform: Platform,
    private http: HTTP
    ) { }

ngOnInit() {
    // Since ngOnInit() is executed before `deviceready` event,
    // you have to wait the event.
    this.platform.ready();
    this.getmarker();


  }

  getmarker(){
    this.http.get('xxxxxxx/v1/flight.json?flightId=201',{},{})
    .then(data=>{

      this.latitude = JSON.parse(data.data).result.response.data.flight.track.latitude
      this.longitude = JSON.parse(data.data).result.response.data.flight.track.longitude
      console.log(this.latitude,this.longitude)

      this.loadMap()
    })
  }

  loadMap() {


    let HND_AIR_PORT = this.latitude;
    let SFO_AIR_PORT = this.longitude

    let AIR_PORTS = [
      HND_AIR_PORT,
      SFO_AIR_PORT
    ];

    this.map = GoogleMaps.create('map_canvas');

    let polyline: Polyline = this.map.addPolylineSync({
      points: AIR_PORTS,
      color: '#AA00FF',
      width: 10,
      geodesic: true,
      clickable: true  // clickable = false in default
    });

    polyline.on(GoogleMapsEvent.POLYLINE_CLICK).subscribe((params: any) => {
      let position: LatLng = <LatLng>params[0];

      let marker: Marker = this
                                                

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