I'm having some troubles with displaying ItemizedOverlay(s) on a map.
Here I extracted a simplified example of what I need to do.
Here's my Map class:
import java.util.Timer;
import java.util.TimerTask;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.util.Log;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
import com.google.android.maps.OverlayItem;
public class Map extends MapActivity {
protected static final String TAG = "Map";
private int test = 0;
private TestItemized items = null;
private Timer timer = new Timer();
private MapView map = null;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
this.map = (MapView) this.findViewById(R.id.myMapView1);
this.map.setBuiltInZoomControls(true);
this.map.setSatellite(false);
this.map.setStreetView(true);
this.map.setClickable(true);
this.timer.scheduleAtFixedRate(new TimerTask(){
#Override
public void run() {
Log.d(TAG, "refeshing: "+ String.valueOf(test));
Drawable drawable = Map.this.getResources().getDrawable(R.drawable.androidmarker);
test++;
if (Map.this.items instanceof TestItemized && Map.this.map.getOverlays().contains(Map.this.items))
Map.this.map.getOverlays().remove(Map.this.items);
//some code might go here to retrieve new coordinates but this isn't a problem
Map.this.items = new TestItemized(drawable, Map.this);
double lat = 46.491734;
Log.d(TAG,"Latitude : "+ String.valueOf(lat));
double lng = 11.320365;
Log.d(TAG,"Longitude : "+ String.valueOf(lng));
OverlayItem item = new OverlayItem(new GeoPoint((int)(lat * 1E6), (int)(lng * 1E6)), String.valueOf(Map.this.test), "blah!");
Map.this.items.addOverlay(item);
Map.this.map.getOverlays().add(Map.this.items);
Log.d(TAG,"refreshing "+String.valueOf(test)+" is over");
}}, 1000,60000);
}
#Override
protected boolean isRouteDisplayed() {
return false;
}
}
I followed the guide provided by google to extends the ItemizedOverlay class
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.widget.Toast;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.OverlayItem;
#SuppressWarnings("rawtypes")
public class TestItemized extends ItemizedOverlay {
private Context mCtx;
private List<OverlayItem> mItems = new ArrayList<OverlayItem>();
public TestItemized(Drawable arg0) {
super(arg0);
}
/**
* #param defaultMarker
* #param mCtx
*/
public TestItemized(Drawable defaultMarker, Context mCtx) {
super(defaultMarker);
this.mCtx = mCtx;
}
public void addOverlay(OverlayItem overlay) {
this.mItems.add(overlay);
populate();
}
#Override
protected OverlayItem createItem(int i) {
return this.mItems.get(i);
}
#Override
public int size() {
return mItems.size();
}
/* (non-Javadoc)
* #see com.google.android.maps.ItemizedOverlay#onTap(int)
*/
#Override
protected boolean onTap(int index) {
OverlayItem item = this.mItems.get(index);
Toast.makeText(this.mCtx, item.getTitle() +" : " +item.getSnippet(), Toast.LENGTH_LONG).show();
return true;
}
}
As it is clear from the code I need to update at fixed times a map UI with possibly new positions to do so I'm using a timer, but I think I might fall in some kind of thread issues I don't know how to handle, since when running a test I can see in the Log what happens but no marker is drawn on the map. Does anybody know how to solve this kind of problem?
At the end of the run() method, after you finish updating your MapView you should call
Map.this.map.postInvalidate();
Related
I searched for two hours but only found draw Line, i want get direction as this form Click here! I have ten point and when i click the point i want to show direction from my location to the point.
My code look:
package de.vogella.android.locationapi.maps;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import com.google.android.maps.MyLocationOverlay;
import com.google.android.maps.OverlayItem;
import com.google.android.maps.Projection;
public class ShowMapActivity extends MapActivity {
private MapController mapController;
private MapView mapView;
private LocationManager locationManager;
private MyOverlays itemizedoverlay,itemizedoverlay_central;
private MyLocationOverlay myLocationOverlay;
private String nameOfOffice_AZ[];
private String addressOfOffice_AZ[];
private String phoneOfOffice_AZ[];
public void onCreate(Bundle bundle) {
super.onCreate(bundle);
setContentView(R.layout.main); // bind the layout to the activity
// Configure the Map
mapView = (MapView) findViewById(R.id.mapview);
mapView.setBuiltInZoomControls(true);
Projection projection = mapView.getProjection();
nameOfOffice_AZ= getResources().getStringArray(R.array.NamesOFObject_AZ);
addressOfOffice_AZ = getResources().getStringArray(R.array.AddressOfOffice_AZ);
phoneOfOffice_AZ = getResources().getStringArray(R.array.PhoneOfOffice_AZ);
mapController = mapView.getController();
mapController.setZoom(16); // Zoon 1 is world view
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0,
0, new GeoUpdateHandler());
myLocationOverlay = new MyLocationOverlay(this, mapView);
mapView.getOverlays().add(myLocationOverlay);
myLocationOverlay.runOnFirstFix(new Runnable() {
public void run() {
mapView.getController().animateTo(myLocationOverlay.getMyLocation());
}
});
Drawable drawable = this.getResources().getDrawable(R.drawable.office_icon);
Drawable drawable_central = this.getResources().getDrawable(R.drawable.central_office);
itemizedoverlay = new MyOverlays(this, drawable);
itemizedoverlay_central = new MyOverlays(this, drawable_central);
createMarker();
}
#Override
protected boolean isRouteDisplayed() {
return false;
}
public class GeoUpdateHandler implements LocationListener {
#Override
public void onLocationChanged(Location location) {
int lat = (int) (location.getLatitude() * 1E6);
int lng = (int) (location.getLongitude() * 1E6);
GeoPoint point = new GeoPoint(lat, lng);
createMarker();
mapController.animateTo(point); // mapController.setCenter(point);
}
#Override
public void onProviderDisabled(String provider) {
}
#Override
public void onProviderEnabled(String provider) {
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
}
private void createMarker() {
//CENTRAL OFFICE
GeoPoint p_central = new GeoPoint((int)(40.38292884084829 * 1e6),(int)(49.84223246574 * 1e6));
OverlayItem overlayitem = new OverlayItem(p_central, nameOfOffice_AZ[0] ,addressOfOffice_AZ[0]+"\n"+phoneOfOffice_AZ[0] );
itemizedoverlay_central.addOverlay(overlayitem);
mapView.getOverlays().add(itemizedoverlay_central);
//END CENTRALL OFFICE
GeoPoint p = new GeoPoint((int)(40.376455916943236 * 1e6),(int)(49.84803676605224 * 1e6));
overlayitem = new OverlayItem(p, nameOfOffice_AZ[0] ,addressOfOffice_AZ[0]+"\n"+phoneOfOffice_AZ[0] );
itemizedoverlay.addOverlay(overlayitem);
mapView.getOverlays().add(itemizedoverlay);
}
#Override
protected void onResume() {
super.onResume();
myLocationOverlay.enableMyLocation();
myLocationOverlay.enableCompass();
}
#Override
protected void onPause() {
super.onPause();
myLocationOverlay.disableMyLocation();
myLocationOverlay.disableCompass();
}
}
and MyOverlays.java
package de.vogella.android.locationapi.maps;
import java.util.ArrayList;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.Context;
import android.content.DialogInterface;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.widget.Toast;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
import com.google.android.maps.OverlayItem;
public class MyOverlays extends ItemizedOverlay<OverlayItem> {
private static int maxNum = 5;
private OverlayItem overlays[] = new OverlayItem[maxNum];
private int index = 0;
private boolean full = false;
private Context mContext;
private OverlayItem previousoverlay;
public MyOverlays(Context context, Drawable defaultMarker) {
super(boundCenterBottom(defaultMarker));
this.mContext = context;
}
private ArrayList< OverlayItem > mOverlays = new ArrayList< OverlayItem >();
public void addOverlay(OverlayItem overlay) {
mOverlays.add(overlay);
populate();
}
public void name() {
}
#Override
protected OverlayItem createItem(int i) {
return mOverlays.get(i);
}
#Override
public int size() {
return mOverlays.size();
}
#Override
protected boolean onTap(int i) {
//when you tap on the marker this will show the informations provided by you when you create in the
//main class the OverlayItem
OverlayItem item = mOverlays.get(i);
AlertDialog.Builder dialog = new AlertDialog.Builder(mContext);
dialog.setInverseBackgroundForced(true);
dialog.setTitle(item.getTitle());
dialog.setMessage(item.getSnippet());
dialog.setCancelable(true);
dialog.setPositiveButton("Go To", new OkOnClickListener());
/// dialog.setNegativeButton("No, no", new CancelOnClickListener());
dialog.show();
// nese bax = new nese();
// bax.oldu(mContext);
return true;
}
private final class CancelOnClickListener implements
DialogInterface.OnClickListener {
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(mContext, "You clicked yes", Toast.LENGTH_LONG)
.show();
}
}
private final class OkOnClickListener implements
DialogInterface.OnClickListener {
public void onClick(DialogInterface dialog, int which) {
//Toast.makeText(mContext, "You clicked no", Toast.LENGTH_LONG).show();
}
}
public class RoutePath extends MapActivity {
/** Called when the activity is first created. */
MapView mapView;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
MapView mapView = (MapView) findViewById(R.id.mapview);
double src_lat = 25.04202; // the testing source
double src_long = 121.534761;
double dest_lat = 25.05202; // the testing destination
double dest_long = 121.554761;
GeoPoint srcGeoPoint = new GeoPoint((int) (src_lat * 1E6),
(int) (src_long * 1E6));
GeoPoint destGeoPoint = new GeoPoint((int) (dest_lat * 1E6),
(int) (dest_long * 1E6));
DrawPath(srcGeoPoint, destGeoPoint, Color.GREEN, mapView);
mapView.getController().animateTo(srcGeoPoint);
mapView.getController().setZoom(15);
}
#Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
private void DrawPath(GeoPoint src, GeoPoint dest, int color,
MapView mMapView01) {
// code in section 2.2
}
}
}
Less efforts on search..
Anyway look at Google Driving Directions - MapView overlayed Also The Google Directions API
and using intent
Intent intent = new Intent(android.content.Intent.ACTION_VIEW,
Uri.parse("http://maps.google.com/maps?saddr=xx.xx,xx.xx&daddr=xx.xx,xx.xx"));
startActivity(intent);
This blogpost can be a good startpoint: Android driving direction Route-Path
Worked fine for me.
I followed Google's Map View tutorial from this link http://developer.android.com/resources/tutorials/views/hello-mapview.html
I've done the first about Creating Map activity, but have problems with Adding Overlays. Here is the source code:
package rs.iz.stevy.wifi;
import java.util.ArrayList;
import android.graphics.drawable.Drawable;
import android.app.AlertDialog;
import android.content.Context;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.OverlayItem;
public class Overlay extends ItemizedOverlay {
public Overlay(Drawable defaultMarker, Context context) {
super(defaultMarker);
Context mContext;
mContext = context;
}
private ArrayList<OverlayItem>mOverlays= new ArrayList<OverlayItem>();
public Overlay(Drawable defaultMarker) {
super(boundCenterBottom(defaultMarker));
}
public void addOverlay(OverlayItem overlay) {
mOverlays.add(overlay);
populate();
}
#Override
protected OverlayItem createItem(int i) {
return mOverlays.get(i); }
#Override
public int size() {
return mOverlays.size();
}
#Override
protected boolean onTap(int index) {
OverlayItem item = mOverlays.get(index);
AlertDialog.Builder dialog = new AlertDialog.Builder(mContext);
dialog.setTitle(item.getTitle());
dialog.setMessage(item.getSnippet());
dialog.show();
return true;
}
}
Error appear at this line:
AlertDialog.Builder dialog = new AlertDialog.Builder(mContext);
Eclipse shows mContext cannot be resolved to variable.
Here is the Activity class:
rs.iz.stevy.wifi;
import java.util.List;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
public class WiFiKupacicaActivity extends MapActivity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
MapView mapa= (MapView) findViewById(R.id.Mapa1);
mapa.setBuiltInZoomControls(true);
mapa.setSatellite(true);
GeoPoint initGeoPoint = mapa.getMapCenter();
List<Overlay> mapOverlays = mapa.getOverlays();
Drawable drawable = this.getResources().getDrawable(R.drawable.kupacica);
Overlay itemizedoverlay = new Overlay (drawable);
}
#Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
Eclipse show error Cannot instantiate Overlay at this line:
Overlay itemizedoverlay = new Overlay (drawable);
If you see here any error that can be easily fixed please answer cause this are my first attempts to write an android app.
The first error is because you defined mContext as a local variable in the constructor instead of as an instance variable. To remedy, move the Context mContext; line out of the constructor (put it right before this line public Overlay(Drawable defaultMarker, Context context) {). You want to declare instance variables outside of any method, but inside the class itself.
Your second error occurs because Overlay is an Abstract class. You cannot instantiate an abstract class with "new". What you want to do here is instantiate your Overlay subclass. In your import statements, you're importing com.google.android.maps.Overlay so it thinks you're instantiating that rather than your subclass. To fix, replace
Overlay itemizedoverlay = new Overlay (drawable);
with
rs.iz.stevy.wifi.Overlay itemizedoverlay = new rs.iz.stevy.wifi.Overlay (drawable);
In practice, you should avoid giving a class the name of an abstract class already in its own hierarchy (to avoid import errors like this).
I have a map activity which displays the map, I want to add a marker when I touch on the screen ..
This is my Activity ...
package com.adhamenaya.android;
import java.util.List;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.MotionEvent;
import android.widget.Toast;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;
import com.google.android.maps.OverlayItem;
public class MapApp extends MapActivity {
private MapView mapView;
private MapController mapController;
private LocationManager locationManager;
private Context context;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
context=this;
initLayout();
initMap();
}
private void initLayout(){
mapView = (MapView) findViewById(R.id.mapview);
//blueIcon = (Drawable)this.getResources().getDrawable(R.drawable.blueicon);
}
private void initMap(){
mapView.setBuiltInZoomControls(true);
mapView.setStreetView(true);
mapController=mapView.getController();
mapController.setZoom(10);// 1 is world view
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,0, 0, new GeoUpdateHandler());
}
#Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
class GeoUpdateHandler implements LocationListener {
#Override
public void onLocationChanged(Location location) {
int lat=(int)(location.getLatitude()*1E6);
int lng=(int)(location.getLongitude()*1E6);
GeoPoint point=new GeoPoint(lat,lng);
//GeoPoint point = new GeoPoint(19240000,-99120000);
mapController.animateTo(point);
mapController.setCenter(point);
Drawable redIcon = context.getResources().getDrawable(R.drawable.redicon);
List<Overlay> mapOverlays = mapView.getOverlays();
MyItemizedOverlay itemizedoverlay = new MyItemizedOverlay(redIcon);
OverlayItem overlayitem = new OverlayItem(point, "Hello !", "I'm here");
itemizedoverlay.addOverlay(overlayitem);
mapOverlays.add(itemizedoverlay);
}
#Override
public void onProviderDisabled(String arg0) {
// TODO Auto-generated method stub
}
#Override
public void onProviderEnabled(String arg0) {
// TODO Auto-generated method stub
}
#Override
public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
// TODO Auto-generated method stub
}
public boolean onTouchEvent(MotionEvent event){
int x=(int)event.getX();
int y=(int)event.getY();
Toast.makeText(context, x, Toast.LENGTH_LONG).show();
GeoPoint point = mapView.getProjection().fromPixels(x, y);
Drawable redIcon = context.getResources().getDrawable(R.drawable.blueicon);
List<Overlay> mapOverlays = mapView.getOverlays();
MyItemizedOverlay itemizedoverlay = new MyItemizedOverlay(redIcon);
OverlayItem overlayitem = new OverlayItem(point, "New Place", "I clicked here !");
itemizedoverlay.addOverlay(overlayitem);
mapOverlays.add(itemizedoverlay);
return false;
}
}
}
Edit : This is the class for ItemizedOverlay, where I have implemented onTap() method , but nothing happens ...
package com.adhamenaya.android;
import java.util.ArrayList;
import android.app.AlertDialog;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.view.MotionEvent;
import android.widget.Toast;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.MapView;
import com.google.android.maps.OverlayItem;
public class MyItemizedOverlay extends ItemizedOverlay{
private ArrayList<OverlayItem> mOverlays = new ArrayList<OverlayItem>();
private Context mContext;
public MyItemizedOverlay(Drawable defaultMarker) {
super(boundCenterBottom(defaultMarker));
}
public MyItemizedOverlay(Drawable defaultMarker, Context context) {
super(defaultMarker);
mContext = context;
}
public void addOverlay(OverlayItem overlay) {
mOverlays.add(overlay);
populate();
}
#Override
protected OverlayItem createItem(int i) {
return mOverlays.get(i);
}
#Override
public int size() {
return mOverlays.size();
}
#Override
protected boolean onTap(int index) {
OverlayItem item = mOverlays.get(index);
AlertDialog.Builder dialog = new AlertDialog.Builder(mContext);
dialog.setTitle(item.getTitle());
dialog.setMessage(item.getSnippet());
dialog.show();
return true;
}
#Override
public boolean onTouchEvent(MotionEvent event, MapView mapView) {
int x=(int)event.getX();
int y=(int)event.getY();
Toast.makeText(mContext, x, Toast.LENGTH_LONG).show();
return super.onTouchEvent(event, mapView);
}
}
Hello, MapView! tutorial covers showing markers on MapView. In the tutorial markers are added as soon as the activity starts, but you can also add markers at later time, for example, when user touches screen. If you try this approach, you'll likely want to override onTap in your subclass of ItemizedOverlay.
Update:
If you follow the tutorial, you'll have your own subclass of ItemizedOverlay. onTap is one of its methods. Now that I look at the documentation, unfortunately onTap(GeoPoint p, MapView mapView) is not public or protected so you cannot override it.
What you can do, is have another overlay, solely for detecting taps. Instead of subclassing ItemizedOverlay, subclass Overlay.
private class TapOverlay extends Overlay {
public boolean onTap(GeoPoint p, MapView mapView) {
// code that adds item in your ItemizedOverlay
// goes here
return true;
}
}
Please help me out, I am working on a Project Xyz having the mapView with add multiple overlays and remove overlays as per userChoice.
To be more clear it filters the overlays as per user choice,,,,
Suppose showing favorite places, friends of a user...
PostLoginServiceHomeBean is my ArrayList with an ArrayList NearByFavoritePlacesList object
entry.getNearByFavoritePlacesList().get(i).getGpsLatitude()
.trim()
i.e by this i'm getting the multiple lat long form server...
The code runs f9 and add the multiple overlays to my map and shows name and address of repective place on overlay tap.But how could I remove the overlays form my map...
I am enclosing the code:Please find the code below:
Please help me out....
package com.gogozing.app;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.content.Intent;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.Toast;
import com.gogozing.service.LocateServices;
import com.gogozing.util.Data;
import com.gogozing.util.PostLoginServiceHomeBean;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;
import com.google.android.maps.OverlayItem;
public class HomeMapActivity extends MapActivity {
private MapView myMapView;
private MapController myMapController;
private List<Overlay> mapOverlays;
private HomeMapItemizedOverlay itemizedOverlay;
private Context context;
private PostLoginServiceHomeBean entry;
private GeoPoint initGeoPoint;
private CheckBox peopleCheckBox, friendsCheckBox, favoritesCheckBox;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.home_map_layout);
context = this;
backButton = (Button) findViewById(R.id.HomeMapLeftBackButton);
eventsBtn = (Button) findViewById(R.id.EventsBtn);
profileBtn = (Button) findViewById(R.id.ProflieBtn);
homeBtn = (Button) findViewById(R.id.HomeBtn);
locateButton = (Button) findViewById(R.id.LocateBtn);
socializeButton = (Button) findViewById(R.id.SocializeBtn);
peopleCheckBox = (CheckBox) findViewById(R.id.HomeMapViewPeopleCheckBox);
favoritesCheckBox = (CheckBox) findViewById(R.id.HomeMapViewFavoritesCheckBox);
friendsCheckBox = (CheckBox) findViewById(R.id.HomeMapViewFriendsCheckBox);
homeBtn.setBackgroundResource(R.drawable.home_f);
myMapView = (MapView) findViewById(R.id.mapviewHome);
myMapView.setBuiltInZoomControls(true);
// Set satellite view
myMapController = myMapView.getController();
// Get the current location in start-up
try {
entry = Data.postLoginServiceHomeMain.get(0);
favoritesCheckBox
.setOnCheckedChangeListener(new OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
if (isChecked) {
viewFavoritePlaces();
} else
removeFavoritePlaces();
}
});
} catch (Exception e) {
Log.e(Data.LOG, e.getMessage(), e);
}
}
void viewFavoritePlaces() {
for (int i = 0; i < entry.getNearByFavoritePlacesList().size(); i++) {
double latitude = Double.valueOf(
**entry.getNearByFavoritePlacesList().get(i).getGpsLatitude()
.trim()**).doubleValue();
double longitude = Double.valueOf(
entry.getNearByFavoritePlacesList().get(i)
.getGpsLongitude().trim()).doubleValue();
Log.v(Data.LOG1, " Latitude " + latitude + " Longitude "
+ longitude);
String name = entry.getNearByFavoritePlacesList().get(i)
.getMerchantName();
String address = entry.getNearByFavoritePlacesList().get(i)
.getAddress();
initGeoPoint = new GeoPoint((int) (latitude * 1E6),
(int) (longitude * 1E6));
mapOverlays = myMapView.getOverlays();
Drawable drawable = this.getResources().getDrawable(
R.drawable.map_store_place);
itemizedOverlay = new HomeMapItemizedOverlay(drawable, this);
OverlayItem overlayItem = new OverlayItem(initGeoPoint, name,
address);
itemizedOverlay.addOverlay(overlayItem);
mapOverlays.add(itemizedOverlay);
myMapController.animateTo(initGeoPoint);
myMapController.setZoom(15);
}
}
void removeFavoritePlaces() {
//List<Overlay> mapOverlays = myMapView.getOverlays();
mapOverlays.remove(itemizedOverlay);
}
#Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
};
public class HomeMapItemizedOverlay extends ItemizedOverlay<OverlayItem> {
private ArrayList<OverlayItem> mOverlays = new ArrayList<OverlayItem>();
private Context mContext;
public HomeMapItemizedOverlay(Drawable defaultMarker, Context context) {
super(boundCenterBottom(defaultMarker));
mContext = context;
}
public void addOverlay(OverlayItem overlay) {
mOverlays.add(overlay);
populate();
}
public void removeOverlay(OverlayItem overlay)
{
mOverlays.remove(overlay);
populate();
}
#Override
protected OverlayItem createItem(int i) {
return mOverlays.get(i);
}
#Override
public int size() {
return mOverlays.size();
}
#Override
protected boolean onTap(int index) {
OverlayItem item = mOverlays.get(index);
AlertDialog.Builder dialog = new AlertDialog.Builder(mContext);
dialog.setTitle(item.getTitle());
dialog.setMessage(item.getSnippet());
dialog.show();
return true;
}
}
}
Here I am giving one solution what I am getting from your question... You need to add Lat Long into Overlay item which is coming from server and add it to itemized overlay, after that when ever you would like to remove any Itemizedoverlay with specific lat long you can check and remove from map overlay as well.
In my Android app I want to mark on map a location (I know the address of location). When I mark it on map, I want to display the name of location,too. How can I do that?
I have this: OverlayItem(p ,"Kaufland", "Magic Kingdom"),but on map appear only the point,without the name.
Here is my code:
package com.ShoppingList.Shops;
import java.io.IOException;
import java.util.List;
import java.util.Locale;
import com.ShoppingList.R;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import java.util.ArrayList;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.location.Address;
import android.location.Geocoder;
import android.os.Bundle;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.OverlayItem;
public class ShowMap extends MapActivity {
private MapView mapView;
MapController mc;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.showmap);
mapView = (MapView) findViewById(R.id.mapview);
mapView.setBuiltInZoomControls(true);
mapView.setClickable(true);
Drawable marker=getResources().getDrawable(R.drawable.pushpin);
marker.setBounds(0, 0, marker.getIntrinsicWidth(),
marker.getIntrinsicHeight());
InterestingLocations funPlaces = new InterestingLocations(marker);
mapView.getOverlays().add(funPlaces);
GeoPoint pt = funPlaces.getCenter(); // get the first-ranked point
mapView.getController().setCenter(pt);
mapView.getController().setZoom(15);
}
#Override
protected boolean isLocationDisplayed() {
return false;
}
#Override
protected boolean isRouteDisplayed() {
return false;
}
class InterestingLocations extends ItemizedOverlay {
private List locations = new ArrayList();
private Drawable marker;
String adresa;
public InterestingLocations(Drawable marker)
{
super(marker);
this.marker=marker;
// create locations of interest
Bundle bundle = getIntent().getExtras();
adresa = bundle.getString("adress");
Geocoder geoCoder = new Geocoder(ShowMap.this, Locale.getDefault());
try {
List addresses = geoCoder.getFromLocationName(adresa, 5);
String add = "";
if (addresses.size() > 0) {
GeoPoint p = new GeoPoint((int) (addresses.get(0).getLatitude() * 1E6),
(int) (addresses.get(0).getLongitude() * 1E6));
locations.add(new OverlayItem(p ,"Kaufland", "Magic Kingdom"));
}
} catch (IOException e) {
e.printStackTrace();
}
populate();
}
#Override
public void draw(Canvas canvas, MapView mapView, boolean shadow) {
super.draw(canvas, mapView, shadow);
boundCenterBottom(marker);
}
#Override
protected OverlayItem createItem(int i) {
return locations.get(i);
}
#Override
public int size() {
return locations.size();
}
}
}
I can't believe there's no easier way but it doesn't look like there is. Here is one method:
http://binwaheed.blogspot.com/2011/05/android-display-title-on-marker-in.html
Also I highly recommend using anti-aliasing unless you want ugly text:
TextPaint paintText = new TextPaint(Paint.ANTI_ALIAS_FLAG);
I used a Toast to display the text indicated by the marker. Here's how I solved it for a demo project:
-- begin Location.java --
package com.cb2enterprises.geocode;
import com.google.android.maps.GeoPoint;
public class Location
{
public GeoPoint Point;
public String Title;
public String Snippet;
public Location(GeoPoint point, String title, String snippet)
{
Point = point;
Title = title;
Snippet = snippet;
}
}
-- end --
-- begin PushpinOverlay.java --
package com.cb2enterprises.geocode;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.widget.Toast;
import android.view.Gravity;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.OverlayItem;
import java.util.ArrayList;
import java.util.List;
public class PushpinOverlay extends ItemizedOverlay<OverlayItem>
{
private List<Location> mItems;
Context mContext = null;
public PushpinOverlay(Context context, Drawable marker)
{
super(boundCenterBottom(marker));
mContext = context;
}
public void setItems(ArrayList<Location> items)
{
mItems = items;
populate();
}
#Override
protected OverlayItem createItem(int i)
{
return new OverlayItem(mItems.get(i).Point, mItems.get(i).Title, mItems.get(i).Snippet);
}
#Override
public int size() {
return mItems.size();
}
#Override
protected boolean onTap(int i)
{
Toast msg = Toast.makeText(mContext, mItems.get(i).Title, Toast.LENGTH_LONG);
msg.setGravity(Gravity.CENTER, msg.getXOffset() / 2, msg.getYOffset() / 2);
msg.show();
return true;
}
}
-- end --
-- begin GeoCodeDemoActivity.java --
package com.cb2enterprises.geocode;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.graphics.drawable.Drawable;
import android.location.Address;
import android.location.Geocoder;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
import com.google.android.maps.MyLocationOverlay;
public class GeoCodeDemoActivity extends MapActivity
{
Geocoder geocoder = null;
MapView mapView = null;
ProgressDialog progDialog = null;
List<Address> addressList = null;
MyLocationOverlay curLocOverlay = null;
ArrayList<Location> locations = null;
PushpinOverlay pushpin = null;
#Override
protected boolean isLocationDisplayed()
{
return false;
}
#Override
protected boolean isRouteDisplayed()
{
return false;
}
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mapView = (MapView)findViewById(R.id.geoMap);
mapView.setBuiltInZoomControls(true);
locations = new ArrayList<Location>();
Drawable icon = getResources().getDrawable(R.drawable.pin);
pushpin = new PushpinOverlay(this, icon);
// put the current location as hockey puck
curLocOverlay = new MyLocationOverlay(this, mapView);
curLocOverlay.runOnFirstFix(new Runnable()
{
public void run()
{
mapView.getController().animateTo(curLocOverlay.getMyLocation());
}
});
mapView.getOverlays().add(curLocOverlay);
mapView.getController().setZoom(12);
Button geoBtn = (Button)findViewById(R.id.geocodeBtn);
geocoder = new Geocoder(this);
geoBtn.setOnClickListener(new OnClickListener()
{
#Override
public void onClick(View arg0)
{
EditText loc = (EditText)findViewById(R.id.location);
String locationName = loc.getText().toString();
progDialog = ProgressDialog.show(GeoCodeDemoActivity.this, "Processing",
"Finding location", true, false);
findLocation(locationName);
}
});
}
#Override
public void onResume()
{
super.onResume();
curLocOverlay.enableMyLocation();
}
#Override
public void onPause()
{
super.onPause();
curLocOverlay.disableMyLocation();
}
private void findLocation(final String locationName)
{
Thread thrd = new Thread()
{
public void run()
{
try
{
//do background work
addressList = geocoder.getFromLocationName(locationName, 5);
//send message to handler to process results
uiCallback.sendEmptyMessage(0);
}
catch (IOException e)
{
e.printStackTrace();
}
}
};
thrd.start();
}
//ui thread callback handler
private Handler uiCallback = new Handler()
{
#Override
public void handleMessage(Message msg)
{
progDialog.dismiss();
if(addressList != null && addressList.size() > 0)
{
int lat = (int)(addressList.get(0).getLatitude()*1E6);
int lng = (int)(addressList.get(0).getLongitude()*1E6);
GeoPoint pt = new GeoPoint(lat, lng);
locations.add(new Location(pt, addressList.get(0).getFeatureName(), addressList.get(0).getAddressLine(0)));
pushpin.setItems(locations);
mapView.getOverlays().add(pushpin);
mapView.getController().setCenter(locations.get(locations.size()-1).Point);
mapView.getController().setZoom(15);
}
else
{
Dialog foundNothingDlg = new AlertDialog.Builder(GeoCodeDemoActivity.this)
.setIcon(0)
.setTitle("Failed to find location")
.setPositiveButton("Ok", null)
.setMessage("Location not found...")
.create();
foundNothingDlg.show();
}
}
};
}