기기가 이미 Google지도로 위치를 통과했는지 확인하는 방법은 무엇인가요?

Question

Google지도의 LocationListener을 사용하여지도 작업을하고 있습니다. 내 응용 프로그램에서는 사용자가 이동 한 경로를 그립니다. 사용자가 이미있는 위치에있을 때 경고를 설정하려고합니다. 그러나 나에게 이런 일을하는 서비스가 있는지, 아니면 모든 것을 구현할 수있는 서비스가 있는지 나는 모른다. 나는 geolocalization의 개념을 이해하지 못한다.

그래서 나는 추적 된 경로를 지나갈 때 사용자에게 경고를 원합니다.

private class FollowMeLocationSource implements LocationSource, LocationListener { 

    private OnLocationChangedListener onLocationChangedListener; 
    private LocationManager locationManager; 
    private LocationListener locationListener; 

    private final Criteria criteria = new Criteria(); 
    private String bestAvailableProvider; 

    /* Updates are restricted to one every 10 seconds, and only when 
    * movement of more than 10 meters has been detected.*/ 
    private final long minTime = 2000; 
    private final float minDistance = 5; 

    private FollowMeLocationSource() { 

     locationManager = (LocationManager) ctx.getSystemService(Context.LOCATION_SERVICE); 
     getBestAvailableProvider(); 
     // Specify Location Provider criteria 
     criteria.setAccuracy(Criteria.ACCURACY_FINE); 
     criteria.setPowerRequirement(Criteria.POWER_LOW); 
     criteria.setAltitudeRequired(true); 
     criteria.setBearingRequired(true); 
     criteria.setSpeedRequired(true); 
     criteria.setCostAllowed(true); 

     locationManager.requestLocationUpdates(bestAvailableProvider,minTime,minDistance,this); 
    } 

    private void getBestAvailableProvider() { 
     /* The preffered way of specifying the location provider (e.g. GPS, NETWORK) to use 
     * is to ask the Location Manager for the one that best satisfies our criteria. 
     * By passing the 'true' boolean we ask for the best available (enabled) provider. */ 
     bestAvailableProvider = locationManager.getBestProvider(criteria, true); 
     Log.i(TAG,"bestAvailableProvider: " + bestAvailableProvider); 
    } 

    /* Activates this provider. This provider will notify the supplied listener 
    * periodically, until you call deactivate(). 
    * This method is automatically invoked by enabling my-location layer. */ 
    @Override 
    public void activate(OnLocationChangedListener listener) { 
     Log.i(TAG,"activate"); 
     // We need to keep a reference to my-location layer's listener so we can push forward 
     // location updates to it when we receive them from Location Manager. 
     onLocationChangedListener = listener; 

     // Request location updates from Location Manager 
     if (bestAvailableProvider != null) { 
      //locationManager.requestLocationUpdates(bestAvailableProvider, minTime, minDistance, this); 
      Log.i(TAG,"activate, bestProvider != null"); 
      locationManager.requestLocationUpdates(bestAvailableProvider,minTime,minDistance,this); 
     } else { 
      Log.i(TAG,"activate, bestProvider == null"); 
      // (Display a message/dialog) No Location Providers currently available. 
     } 
    } 

    /* Deactivates this provider. 
    * This method is automatically invoked by disabling my-location layer. */ 
    @Override 
    public void deactivate() { 
     Log.i(TAG,"deactivate"); 
     // Remove location updates from Location Manager 
     locationManager.removeUpdates(this); 

     onLocationChangedListener = null; 
    } 

    @Override 
    public void onLocationChanged(Location location) { 
     Log.i(TAG,"onLocationChanged. Latitude: " + location.getLatitude() + " - Longitude: " + location.getLongitude()); 
     /* Push location updates to the registered listener.. 
     * (this ensures that my-location layer will set the blue dot at the new/received location) */ 
     if (onLocationChangedListener != null) { 
      onLocationChangedListener.onLocationChanged(location); 
     } 

     /* ..and Animate camera to center on that location ! 
     * (the reason for we created this custom Location Source !) */ 
     listaRota.add(location); 

     if (listaRota.size() == 1) { 
      mMap.addMarker(new MarkerOptions().position(new LatLng(location.getLatitude(),location.getLongitude())).title("Inicio")); 
     } 

     if (listaRota.size() >= 2) { 
      drawPolyLineOnMap(); 
     } 

     mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(location.getLatitude(), location.getLongitude()),15)); 
    } 

    @Override 
    public void onStatusChanged(String s, int i, Bundle bundle) { 
     Log.i(TAG,"onStatusChanged: " + s + ", Estado: " + i); 
    } 

    @Override 
    public void onProviderEnabled(String s) { 
     Log.i(TAG,"onProviderEnabled: " + s); 
    } 

    @Override 
    public void onProviderDisabled(String s) { 
     Log.i(TAG,"onProviderDisabled: " + s); 
    } 
} 

public void drawPolyLineOnMap() { 

    List<LatLng> list = new ArrayList<>(); 

    for(Location l : listaRota) { 
     list.add(new LatLng(l.getLatitude(),l.getLongitude())); 
    } 

    PolylineOptions polylineOptions = new PolylineOptions(); 
    polylineOptions.color(Color.BLUE); 
    polylineOptions.width(15); 
    polylineOptions.addAll(list); 

    mMap.clear(); 
    mMap.addPolyline(polylineOptions); 
} 

Answer 1

서비스 Geofence Monitoring이며 (예컨대 this one)을 사용하는 실시 예 및 튜토리얼 많다있다.