I'm a bit confused, I'm trying to retrieve Latitude / Longitude from an adress, I retrieved some code from previous posts but whatever the address I'm filling in the getFromLocationName method, I'm always having an empty string in return.
here is the code I'm using:
public void onMapReady(GoogleMap map) {
LatLng coord = getLocationFromAddress(getBaseContext(), fullAdr);
.....
.....
public LatLng getLocationFromAddress(Context context, String strAddress)
{
Geocoder coder= new Geocoder(context);
List<Address> address;
LatLng p1 = null;
try
{
if(!coder.isPresent()) {
Log.d("JRE","There is no GeoCoder !");
return new LatLng(0,0);
}
address = coder.getFromLocationName(strAddress, 5);
if(address==null)
{
return null;
}
Address location = address.get(0);
location.getLatitude();
location.getLongitude();
p1 = new LatLng(location.getLatitude(), location.getLongitude());
}
catch (Exception e)
{
e.printStackTrace();
}
return p1;
}
any idea why I'm getting always empty values ?
Thanks.
Related
I am getting current latitude and longitude in map box, I need current timezone based on current latitude and longitude.
For example.My device time is the USA but my location showing in India so I need India timezone.Can you please help me.
#Override
public void onLocationChanged(Location location) {
try {
mLatLng = new LatLng(location.getLatitude(), location.getLongitude());
Log.i("EE","mLatLngmLatLng"+mLatLng);
String time = new java.text.SimpleDateFormat("dd/MM/yyyy HH:mm:ss.SSS").format(location.getTime());
Log.i("EE","time----"+time);
Log.i("EE","vlocation.getTime()----"+location.getTime());
updateCamera();
if (mMarker != null) {
updateMarker();
}else{
addMarker();
}
} catch (Exception e) {
e.printStackTrace();
}
Get address by Geocoder and identify country, When you will get the country name It will be easy for you to identify the time Zone.
private void getAddressFromLocation(double latitude, double longitude) {
Geocoder geocoder = new Geocoder(this, Locale.ENGLISH);
try {
List<Address> addresses = geocoder.getFromLocation(latitude, longitude, 1);
if (addresses.size() > 0) {
Address fetchedAddress = addresses.get(0);
StringBuilder strAddress = new StringBuilder();
for (int i = 0; i < fetchedAddress.getMaxAddressLineIndex(); i++) {
strAddress.append(fetchedAddress.getAddressLine(i)).append(" ");
}
txtLocationAddress.setText(strAddress.toString());
} else {
txtLocationAddress.setText("Searching Current Address");
}
} catch (IOException e) {
e.printStackTrace();
printToast("Could not get address..!");
}
}
I am trying to display markers on map in android by using address.
This is my code:
public void onMapReady(GoogleMap googleMap){
mMap = googleMap;
Geocoder coder= new Geocoder(this);
try
{
String straddress = "155 Park Theater,Palo Alto,CA";
Double latitude = 0.0;
Double longitude = 0.0;
List<Address> addresses = coder.getFromLocationName("155 Park Theater,Palo Alto,CA",1);
Address location = addresses.get(0);
LatLng p1 = new LatLng(location.getLatitude(), location.getLongitude());
mMap.addMarker(new MarkerOptions().position(p1).title("California"));
mMap.moveCamera(CameraUpdateFactory.newLatLng(p1));
}
catch (Exception e)
{
e.printStackTrace();
}
}
If I do not put street number, then it will display the marker.
But, it will just display marker on the street. I want marker on particular location.
I am getting following error while inputting the whole address with street number. The "address" list is empty.
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
Update your code with following :
List<Address> address;
LatLng latLng = null;
try {
address = coder.getFromLocationName(strAddress,5);
if (address==null) {
return null;
}
Address location=address.get(0);
latLng = new LatLng(location.getLatitude(),location.getLongitude());
}
I am working on an app which works with latitude and and longitude after a user input an address. I'm utilizing Geocoder to get the latitude and longitude from the Input address. But the issue is both are returned with associated address from the Geocoder but I'm only able to read one of them. following is the code I'm using:
Geocoder geocoder = new Geocoder(this);
List<Address> addresses;
double[] cordinates = new double[2];
try {
addresses = geocoder.getFromLocationName(locName, 1);
if (addresses.size() > 0) {
cordinates[0] = addresses.get(0).getLatitude();
cordinates[1] = addresses.get(0).getLongitude();//unable to get this one
return cordinates;
}
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
in the above cases I'm able to get latitude but unable to get the longitude. I known this after debugging. Now when I swap them like
cordinates[1] = addresses.get(0).getLongitude();
cordinates[0] = addresses.get(0).getLatitude();
Now I get Longitude but not the latitude.
what is the problem here?
This is working fine. Since you are debugging your code with breakpoints when it encounters the
return cordinates; it goes to
return null;
It only happens while debugging. It always returns the correct value. You can check returned values by inserting a log statement.
{
.....
double[] coordinates = getLongLat("Your address");
Log.wtf(TAG,"Lat:"+coordinates[0]+" Long:"+coordinates[1]);// This will log the correct values
.....
}
public double[] getLongLat(String address){
Geocoder geocoder = new Geocoder(this);
List<Address> addresses;
double[] cordinates = new double[2];
try {
addresses = geocoder.getFromLocationName(address, 1);
if (addresses.size() > 0) {
Address address1 = addresses.get(0);
cordinates[0] = address1.getLatitude();
cordinates[1] = address1.getLongitude();
return cordinates;
}
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
Try this working code :
AutoCompleteTextView acGooglePlaces = (AutoCompleteTextView) findViewById(R.id.ac_edit_my_event_places);
acGooglePlaces.setAdapter(new GooglePlacesAutocompleteAdapter(GooglePlaces.this, R.layout.auto_complete_text_layout));
acGooglePlaces.requestFocus();
btnSearch.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
try {
List<Address> returnedaddresses = geoCoder.getFromLocationName(acGooglePlaces.getText().toString(),1);
if(!returnedaddresses.isEmpty()){
String latForVol = String.valueOf(returnedaddresses.get(0).getLatitude());
String longForVol = String.valueOf(returnedaddresses.get(0).getLongitude());
Log.e("Lat", latForVol);
Log.e("Long", longForVol);
Log.e("Location", acGooglePlaces.getText().toString());
}else {
Log.e("Check", "Please give the correct address");
}
} catch (IOException e) {
e.printStackTrace();
}
}
});
public static LatLng reverseGeocoding(Context context, String locationName){
if(!Geocoder.isPresent()){
Log.w("zebia", "Geocoder implementation not present !");
}
Geocoder geoCoder = new Geocoder(context, Locale.getDefault());
try {
List<Address> addresses = geoCoder.getFromLocationName(locationName, 1);
} catch (IOException e) {
Log.d(Geocoding.class.getName(), "not possible finding LatLng for Address : " + locationName);
}
if(addresses.size() > 0){
Log.d("zebia", "reverse Geocoding : locationName " + locationName + "Latitude " + addresses.get(0).getLatitude() );
return new LatLng(addresses.get(0).getLatitude(), addresses.get(0).getLongitude());
}else{
//use http api
}
return null;
}
i am trying to find out the location name from google maps api in android when i have the longitude and latitude of the location. what i want to achieve is, after getting the location name i want to shoot an text message to my friends telling them about my current location. I am not sure if i need to turn on the geocoder service or not.
this is what i have done so far and now i m stuck.
class mylocationlistener implements LocationListener
{
#SuppressLint("NewApi")
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
if(location != null)
{
Double longi = location.getLongitude();
Double lat = location.getLatitude();
String str = "";
str= "Longitude=" + longi + ", Latitude=" + lat;
Toast.makeText(getApplicationContext(),str,Toast.LENGTH_LONG).show();
Geocoder geocoder = new Geocoder(getBaseContext(), Locale.getDefault());
boolean abc = Geocoder.isPresent();
try {
List<Address> addresses = geocoder.getFromLocation(lat, longi, 1);
if(!addresses.isEmpty())
{
str = addresses.get(0).getLocality() + addresses.get(0).getAddressLine(1)+ addresses.get(0).getAddressLine(2);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Toast.makeText(getApplicationContext(),str, Toast.LENGTH_LONG).show();
}
}
}
I think you are almost done with it, how I deal with this before is using the following codes:
public static String getAddressStringFromLocation(Context context, Location location) {
GeoPoint gp = new GeoPoint((int) (location.getLatitude() * 1e6),
(int) (location.getLongitude() * 1e6));
return getAddressStringFromGeoPoint(context, gp);
}
public static String getAddressStringFromGeoPoint(Context context, GeoPoint point) {
StringBuilder sb = new StringBuilder();
Address ad = getAddressFromGeoPoint(context, point);
if(ad != null && ad.getMaxAddressLineIndex() > 0) {
for(int i = 0, max = ad.getMaxAddressLineIndex(); i < max; i++) {
sb.append(ad.getAddressLine(i));
}
sb.append(ad.getThoroughfare());
return sb.toString();
} else {
return null;
}
}
public static Address getAddressFromGeoPoint(Context context, GeoPoint point){
Geocoder geoCoder = new Geocoder(context, Locale.CHINA);
Address address = null;
try {
List<Address> addresses = geoCoder.getFromLocation(point.getLatitudeE6() / 1E6, point.getLongitudeE6() / 1E6, 1);
address = addresses.get(0);
} catch (IOException e) {
e.printStackTrace();
}
return address;
}
I want to do reverse geocoding in my app using map api 2.But i dont know exactly how to do that?Any ideas?
Use Geocoder:
Geocoder geoCoder = new Geocoder(context);
List<Address> matches = geoCoder.getFromLocation(latitude, longitude, 1);
Address bestMatch = (matches.isEmpty() ? null : matches.get(0));
This is how it works for me..
MarkerOptions markerOptions;
Location myLocation;
Button btLocInfo;
String selectedLocAddress;
private GoogleMap myMap;
LatLng latLng;
LatLng tmpLatLng;
#Override
public void onMapLongClick(LatLng point) {
// Getting the Latitude and Longitude of the touched location
latLng = point;
// Clears the previously touched position
myMap.clear();
// Animating to the touched position
myMap.animateCamera(CameraUpdateFactory.newLatLng(latLng));
// Creating a marker
markerOptions = new MarkerOptions();
// Setting the position for the marker
markerOptions.position(latLng);
// Adding Marker on the touched location with address
new ReverseGeocodingTask(getBaseContext()).execute(latLng);
//tmpLatLng = latLng;
btLocInfo.setEnabled(true);
btLocInfo.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
double[] coordinates={tmpLatLng.latitude/1E6,tmpLatLng.longitude/1E6};
double latitude = tmpLatLng.latitude;
double longitude = tmpLatLng.longitude;
Log.i("selectedCoordinates", latitude + " " + longitude);
Log.i("selectedLocAddress", selectedLocAddress);
}
});
}
private class ReverseGeocodingTask extends AsyncTask<LatLng, Void, String>{
Context mContext;
public ReverseGeocodingTask(Context context){
super();
mContext = context;
}
// Finding address using reverse geocoding
#Override
protected String doInBackground(LatLng... params) {
Geocoder geocoder = new Geocoder(mContext);
double latitude = params[0].latitude;
double longitude = params[0].longitude;
List<Address> addresses = null;
String addressText="";
try {
addresses = geocoder.getFromLocation(latitude, longitude,1);
Thread.sleep(500);
if(addresses != null && addresses.size() > 0 ){
Address address = addresses.get(0);
addressText = String.format("%s, %s, %s",
address.getMaxAddressLineIndex() > 0 ? address.getAddressLine(0) : "",
address.getLocality(),
address.getCountryName());
}
}
catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
selectedLocAddress = addressText;
return addressText;
}
#Override
protected void onPostExecute(String addressText) {
// Setting the title for the marker.
// This will be displayed on taping the marker
markerOptions.title(addressText);
// Placing a marker on the touched position
myMap.addMarker(markerOptions);
}
}
You can do like this to get complete address :
public class MainActivity extends AppCompatActivity {
...
private Geocoder geocoder;
private TextView mAddressTxtVu;
...
// assume that you got latitude and longitude correctly
mLatitude = 20.23232
mLongitude = 32.999
String errorMessage = "";
geocoder = new Geocoder(context, Locale.getDefault());
List<Address> addresses = null;
try {
addresses = geocoder.getFromLocation(
mlattitude,
mlongitude,
1);
} catch (IOException e) {
errorMessage = getString(R.string.service_not_available);
Log.e(TAG, errorMessage, e);
} catch (IllegalArgumentException illegalArgumentException) {
// Catch invalid latitude or longitude values.
errorMessage = getString(R.string.invalid_lat_long_used);
Log.e(TAG, errorMessage + ". " + "Latitude = " + mlattitude +",
Longitude = " + mlongitude, illegalArgumentException);
}
// Handle case where no address was found.
if (addresses == null || addresses.size() == 0) {
if (errorMessage.isEmpty()) {
errorMessage = getString(R.string.no_address_found);
Log.e(TAG, errorMessage);
}
} else {
Address address = addresses.get(0);
ArrayList<String> addressFragments = new ArrayList<String>();
// Fetch the address lines using getAddressLine,
// join them, and send them to the thread.
for (int i = 0; i <= address.getMaxAddressLineIndex(); i++) {
addressFragments.add(address.getAddressLine(i));
}
// Log.i(TAG, getString(R.string.address_found));
mAddressTxtVu.setText(TextUtils.join(System.getProperty("line.separator"),
addressFragments));
}
Hope it helps!
You don't need to use Google Maps Api for this purpose. Android SKD have a class for it which you can simply use without any registration of API Key and so on. The class is android.location.Geocoder. It have methods for geocoding and reverse geocoding. I was looking in the source code of this class and found that it have a method android.location.Geocoder#getFromLocationName(java.lang.String, int) where first argument is address, and second is max number of results you want. It returns a List<Address>. The Address class have methods like android.location.Address#getLatitude and android.location.Address#getLongitude. They both return double.
Try it and let me know how good it is :-)