How to dismiss loading after gmpas ready?

Ionic Framework ionic-v3
1

Loading never stop, whereas gmpas native is ready.

here my code .

lokasi.ts

timport { Component } from '@angular/core';
import { IonicPage, NavController, NavParams, Platform,LoadingController } from 'ionic-angular';
import { GoogleMaps, GoogleMap,GoogleMapsEvent,Marker,MarkerOptions,GoogleMapOptions } from'@ionic-native/google-maps';
import { Geolocation } from'@ionic-native/geolocation';

/**
 * Generated class for the LokasiPage page.
 *
 * See https://ionicframework.com/docs/components/#navigation for more info on
 * Ionic pages and navigation.
 */

@IonicPage()
@Component({
  selector: 'page-lokasi',
  templateUrl: 'lokasi.html',
})
export class LokasiPage {
  map:GoogleMap;
  loading:any;
  lat=0;
  long=0;

  constructor(public navCtrl: NavController, public navParams: NavParams, 
    public platfrom:Platform, public geolocation: Geolocation,public loader:LoadingController) {
      this.showLoading();


  }

  ionViewDidLoad() {
    this.platfrom.ready().then(()=>{ 
      this.loadMap();
      this.dismissLoading();
      
    })
  
    console.log('ionViewDidLoad LokasiPage');
  }

  showLoading(){
    this.loading= this.loader.create({
      content:'Menunggu map'
    });
    this.loading.present();
  }
  dismissLoading(){
    if(this.loading){
      this.loading.dismiss();
      this.loading= null;
   }
  }

loadMap(){
this.geolocation.getCurrentPosition({enableHighAccuracy:true,timeout: 20000, maximumAge: 10000}).then((resp)=>{
  this.lat=resp.coords.latitude
  this.long=resp.coords.longitude


 let mapOptions: GoogleMapOptions = {
   controls:{
     'compass':true,
     'myLocationButton':true,
     'myLocation':true,
   },
    camera: {
       target: {
         lat: this.lat,
         lng: this.long
       },
       zoom: 18,
       tilt: 30
     }
  };


  this.map=GoogleMaps.create('map',mapOptions);
}).catch((error)=>{
  console.log('error',error);
});


  //wait the maps
  this.map.one(GoogleMapsEvent.MAP_READY).then(()=>{
    console.log('map ready')
  })
}
}

please help, thanks a lot.