Hear is my project
In my project I am showing my current location,showing the current lat-long.But I'm not able to mark my current position in android.
Thnx in advance.
@Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
Log.d(TAG, "onLocationChanged with location " + location.toString());
// Displays lat, long, altitude and bearing
String text = String.format("Lat:\t %f\nLong:\t %f\nAlt:\t %f\nBearing:\t %f", location.getLatitude(), location.getLongitude(), location.getAltitude(), location.getBearing());
this.locationText.setText(text);
try {
// This gets a list of addresses
List<Address> addresses = geocoder.getFromLocation(location.getLatitude(),
location.getLongitude(), 10);
for (Address address : addresses) {
this.locationText.append("\n" + "kaushik");
}
// Convert latitude and longitude into int that the GeoPoint constructor can understand
int latitude = (int)(location.getLatitude() * 1000000);
int longitude = (int)(location.getLongitude() * 1000000);
point = new GeoPoint(latitude,longitude);
mapController.animateTo(point);
mapController.setZoom(16);
MapOverlay mapOverLay=new MapOverlay();
mapOverLay.setPointToDraw(point);
List<Overlay> listOfOverlays=map.getOverlays();
listOfOverlays.clear();
listOfOverlays.add(mapOverLay);
map.invalidate();
} catch (IOException e) {
Log.e("LocateMe", "Could not get Geocoder data", e);
}
}
mapController.animateTo(point);
mapController.setZoom(16);
MapOverlay mapOverLay=new MapOverlay();
mapOverLay.setPointToDraw(point);
List<Overlay> listOfOverlays=map.getOverlays();
listOfOverlays.clear();
listOfOverlays.add(mapOverLay);
Replace the above lines with below lines//where lat and long are fetched from gps.
Drawable srcdrawable = getApplicationContext().getResources().getDrawable(R.drawable.pin_blue);
CustomItemizedOverlay srcitemizedOverlay = new CustomItemizedOverlay(srcdrawable, getApplicationContext());
GeoPoint srcpoint = new GeoPoint((int)( Double.parseDouble(lat) * 1E6),(int)( Double.parseDouble(lng)* 1E6));
OverlayItem srcoverlayitem = new OverlayItem(srcpoint, "Hello!", "This is your Location.");
srcitemizedOverlay.addOverlay(srcoverlayitem);
mapView.getOverlays().clear();
mapView.getOverlays().add(srcitemizedOverlay);
mapController.animateTo(srcpoint);
mapController.setZoom(16);
//If you want more than one point on map /*
Drawable srcdrawable = getApplicationContext().getResources().getDrawable(R.drawable.pin_blue);
CustomItemizedOverlay srcitemizedOverlay = new CustomItemizedOverlay(srcdrawable, getApplicationContext());
forloop(setoflocations){
GeoPoint srcpoint = new GeoPoint((int)( Double.parseDouble(lat) * 1E6),(int)( Double.parseDouble(lng)* 1E6));
OverlayItem srcoverlayitem = new OverlayItem(srcpoint, "Hello!", "This is your Location.");
if(srcitemizedOverlay!=null && mapController!=null){
srcitemizedOverlay.addOverlay(overlayitem);
mapController.animateTo(point);
animatePoint = point;
}
}
mapView.getOverlays().clear();
mapView.getOverlays().add(srcitemizedOverlay);
*/
also use the below CustomItemizedOverlay.java class
public class CustomItemizedOverlay extends ItemizedOverlay<OverlayItem> {
private final ArrayList<OverlayItem> mapOverlays = new ArrayList<OverlayItem>();
private Context context;
public CustomItemizedOverlay(Drawable defaultMarker) {
super(boundCenterBottom(defaultMarker));
}
public CustomItemizedOverlay(Drawable defaultMarker, Context context) {
this(defaultMarker);
this.context = context;
}
@Override
protected OverlayItem createItem(int i) {
return mapOverlays.get(i);
}
@Override
public int size() {
return mapOverlays.size();
}
public void addOverlay(OverlayItem overlay) {
mapOverlays.add(overlay);
this.populate();
}
}
add overlay Icon on current location
myItemizedOverlay.addItem(point , "myPoint1", "myPoint1");
m_mapView.getOverlays().add(myItemizedOverlay);
mapController.animateTo(point);
来源:https://stackoverflow.com/questions/9990209/cant-mark-while-showing-the-current-location-in-mapview