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POHow can I display more points (GeoPoint) on a map?
 

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  1. POHow can I display more points (GeoPoint) on a map?
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    <p>Currently I am able to display one point the first point that I crated in the code(pointStatie), but I want to be displayed both points. I want to be displayed the point where I am located and another point that I passed the coordinates from another class.</p> <p>My current code is:</p> <pre><code>package aexp.elistcbox; import android.os.Bundle; import android.provider.SyncStateContract.Constants; import com.google.android.maps.MapActivity; import com.google.android.maps.MapView; import com.google.android.maps.MapController; import com.google.android.maps.GeoPoint; import android.content.Context; import android.content.Intent; import android.content.res.Resources; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.location.Criteria; import android.util.Log; import android.widget.Toast; import android.location.Geocoder; import android.location.Address; import java.util.List; import java.util.Locale; import java.io.*; import com.google.android.maps.Overlay; import com.google.android.maps.OverlayItem; import android.graphics.Canvas; import android.graphics.Point; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.drawable.Drawable; public class GPSLocatorActivity extends MapActivity { public MapView mapView; public MapController mapController; public LocationManager locationManager; public LocationListener locationListener; public String best; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.map_view); mapView = (MapView) findViewById(R.id.mapView); mapView.setSatellite(false); mapView.setBuiltInZoomControls(true); mapController = mapView.getController(); mapController.setZoom(13); locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE); locationListener = new GPSLocationListener(); Bundle extras = getIntent().getExtras(); if(extras !=null) { double longitudine = extras.getDouble("long"); double latitudine = extras.getDouble("lat"); ((GPSLocationListener) locationListener).setLongitudine(longitudine); ((GPSLocationListener) locationListener).setLatitudine(latitudine); Log.e("longitudine", "* " + ((GPSLocationListener) locationListener).setLongitudine(longitudine)); Log.e("latitudine", "* " + ((GPSLocationListener) locationListener).setLatitudine(latitudine)); } String provider = null; if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) { provider = LocationManager.GPS_PROVIDER; } else if(locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)) { provider = LocationManager.NETWORK_PROVIDER; } if(provider != null) { locationManager.requestLocationUpdates(provider, 60000, 15, locationListener); } Criteria crit = new Criteria(); crit.setAccuracy(Criteria.ACCURACY_FINE); best = locationManager.getBestProvider(crit, false); locationManager.requestLocationUpdates(best, 60000, 15, locationListener); Location loc = locationManager.getLastKnownLocation(provider); locationListener.onLocationChanged(loc); } @Override protected boolean isRouteDisplayed() { return false; } @Override protected void onResume() { super.onResume(); //locationManager.requestLocationUpdates(best, 10000, 1, locationListener); Toast.makeText(this, "GPS tracking started", Toast.LENGTH_SHORT).show(); // Start location updates; 5s/5m LocationManager locManager = (LocationManager)getSystemService( Context.LOCATION_SERVICE); locManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 60000, 15, locationListener); Criteria crit = new Criteria(); crit.setAccuracy(Criteria.ACCURACY_FINE); String provider = locManager.getBestProvider(crit, true); Location loc = locManager.getLastKnownLocation(provider); } @Override protected void onPause() { super.onPause(); //locationManager.removeUpdates(locationListener); Toast.makeText(this, "GPS tracking stopped", Toast.LENGTH_SHORT).show(); LocationManager locManager = (LocationManager)getSystemService( Context.LOCATION_SERVICE); locManager.removeUpdates(locationListener); } private class GPSLocationListener implements LocationListener { double longitudine; double latitudine; public double setLongitudine(double longitudine) { return this.longitudine = longitudine; } public double setLatitudine(double latitudine) { return this.latitudine = latitudine ; } public void onLocationChanged(Location location) { Toast.makeText(GPSLocatorActivity.this, "Te plimbi", Toast.LENGTH_SHORT).show(); if (location != null) { Log.e("longitudine", "*2 " + longitudine); Log.e("latitudine", "*2 " + latitudine); GeoPoint pointStatie = new GeoPoint( (int) (latitudine * 1E6), (int) (longitudine * 1E6)); GeoPoint point = new GeoPoint( (int) (location.getLatitude() * 1E6), (int) (location.getLongitude() * 1E6)); // afisaza coordonatele /* Toast.makeText(getBaseContext(), "Latitude: " + location.getLatitude() + " Longitude: " + location.getLongitude(), Toast.LENGTH_SHORT).show(); */ mapController.animateTo(point); mapController.animateTo(pointStatie); mapController.setZoom(13); //mapView.invalidate(); // add marker for people point MapOverlay mapOverlay = new MapOverlay(); mapOverlay.setPointToDraw(point); mapOverlay.setPointToDraw(pointStatie); List&lt;Overlay&gt; listOfOverlays = mapView.getOverlays(); listOfOverlays.clear(); listOfOverlays.add(mapOverlay); String address = ConvertPointToLocation(point); Toast.makeText(getBaseContext(), address, Toast.LENGTH_SHORT).show(); String addressStatie = ConvertPointToLocation(pointStatie); Toast.makeText(getBaseContext(), addressStatie, Toast.LENGTH_SHORT).show(); } } public String ConvertPointToLocation(GeoPoint point) { String address = ""; Geocoder geoCoder = new Geocoder( getBaseContext(), Locale.getDefault()); try { List&lt;Address&gt; addresses = geoCoder.getFromLocation( point.getLatitudeE6() / 1E6, point.getLongitudeE6() / 1E6, 1); if (addresses.size() &gt; 0) { for (int index = 0; index &lt; addresses.get(0).getMaxAddressLineIndex(); index++) address += addresses.get(0).getAddressLine(index) + " "; } } catch (IOException e) { e.printStackTrace(); } return address; } class MapOverlay extends Overlay { private GeoPoint pointToDraw; public void setPointToDraw(GeoPoint point) { pointToDraw = point; } public GeoPoint getPointToDraw() { return pointToDraw; } @Override public boolean draw(Canvas canvas, MapView mapView, boolean shadow, long when) { super.draw(canvas, mapView, shadow); // convert point to pixels Point screenPts = new Point(); mapView.getProjection().toPixels(pointToDraw, screenPts); // add marker Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.mark_red); canvas.drawBitmap(bmp, screenPts.x, screenPts.y-50, null); return true; } } public void onProviderDisabled(String provider) { } public void onProviderEnabled (String provider) { } public void onStatusChanged(String provider, int status, Bundle extras) { } } } </code></pre>
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