我不知道如何显示加载指示器，如果我有一个用户位置错误，然后当我再次获得的位置不显示加载指示器。
下面是我的代码：

async loadingIndicator () {
    const loading = await this.loadingController.create({
      cssClass: 'my-custom-class',
      message: 'error, we are getting your location...'
    })
    await loading.present()
  }

  ionViewWillEnter () {
    this.watchId = this.gpsService.watchPosition((location) => {
      this.userLatitude = location.coords.latitude
      this.userLongitud = location.coords.longitude
      console.log('User location: ', location)
    },
    { enableHighAccuracy: true, timeout: 60_000, maximumAge: null }
    )

  }

  updateLocation (location, err) {
    if (err) {
      console.error('updatelocation err: ', err)
      this.loadingIndicator()
      return
    }
    console.log('updateLocation', location)
  }