How to get the latitude and longitude from city name in android?

How to get the latitude and longitude from city name in android? - android

In my application am setting a default value to latitude and longitude.
When i type the cityname in edittext i need to move that point to that place where i need

Use the below code to get the lat and long of city name
String location=cityName;
String inputLine = "";
String result = ""
location=location.replaceAll(" ", "%20");
String myUrl="http://maps.google.com/maps/geo?q="+location+"&output=csv";
try{
URL url=new URL(myUrl);
URLConnection urlConnection=url.openConnection();
BufferedReader in = new BufferedReader(new
InputStreamReader(urlConnection.getInputStream()));
while ((inputLine = in.readLine()) != null) {
result=inputLine;
}
String lat = result.substring(6, result.lastIndexOf(","));
String longi = result.substring(result.lastIndexOf(",") + 1);
}
catch(Exception e){
e.printStackTrace();
}

My suggestion is to use Google GeoCoding REST API , not Geocoder.
Because I once used it in my country,China,I have a error below:
"java.io.IOException: Service not Available"
after search , It`s seems that
"The Geocoder class requires a backend service that is not included in the core android framework. The Geocoder query methods will return an empty list if there no backend service in the platform. Use the isPresent() method to determine whether a Geocoder implementation exists."
So I turn to Google GeoCoding REST API , It`s easy , just request like this:
http://maps.googleapis.com/maps/api/geocode/json?address=NewYork&sensor=false
You will get a json that has geo location in it.
And You can also get Address from locaiton through it:
http://maps.googleapis.com/maps/api/geocode/json?latlng=40.714224,-73.961452&sensor=false
If you can read Chinese , I have a blog about this,check this out:
http://wangchao.de/android%E5%88%A9%E7%94%A8google-geocoding-api%E6%9B%BF%E4%BB%A3geocoder-%E8%A7%A3%E5%86%B3%E5%9C%B0%E5%9D%80%E8%AF%AD%E8%A8%80%E9%97%AE%E9%A2%98

Use the Geocoder class.
Geocode gc = new Geocoder();
List<Address> ads = gc.getFromLocationName(cityName,maxResults);
From the docs :
A class for handling geocoding and reverse geocoding. Geocoding is the process of transforming a street address or other description of a location into a (latitude, longitude) coordinate. Reverse geocoding is the process of transforming a (latitude, longitude) coordinate into a (partial) address. The amount of detail in a reverse geocoded location description may vary, for example one might contain the full street address of the closest building, while another might contain only a city name and postal code. The Geocoder class requires a backend service that is not included in the core android framework. The Geocoder query methods will return an empty list if there no backend service in the platform. Use the isPresent() method to determine whether a Geocoder implementation exists.

Try to get the GeoPoint of cityname
GeoPoint startGP = new GeoPoint(
(int) (Double.parseDouble(cityname.getText()) * 1E6));
Then u can able to get the latitude and longitude from GeoPoint by using below code.
Double.toString((double)startGP.getLatitudeE6() / 1E6),
Double.toString((double)dest.getLongitudeE6() / 1E6)

Related

Android Google Places API- Is there any way to get the city from Place objects?

I am using the autocomplete widget of Google Place API for Android and getting a place object, but I am not able to extract the city of it, just only the complete address as a text.
Apparently, the Place interface does not have a method to return the city.
The city is the address componenets is Locality and Administrative Area Level 3, according this documentation.
Does someone knows any way to get the city of the Place object ?

It is a hack but it works. You can take the lat and lng from the Place object and find the city from the Geocoder.
Geocoder geocoder = new Geocoder(this, Locale.getDefault());
List<Address> addresses = geocoder.getFromLocation(MyLat, MyLong, 1);
String cityName = addresses.get(0).getAddressLine(0);
String stateName = addresses.get(0).getAddressLine(1);
String countryName = addresses.get(0).getAddressLine(2);

Get country code from PlaceAutocompleteFragment android (Google Places API)

In Google Places API for Android, I am using PlaceAutocompleteFragment for displaying the city/country.
Here am getting the address, name, placeId, etc.
Place object contains only these fields.
#Override
public void onPlaceSelected(Place place) {
Log.i(TAG, "Place Selected: " + place.getName());
// Format the returned place's details and display them in the TextView.
mPlaceDetailsText.setText(formatPlaceDetails(getResources(), place.getName(), place.getId(),
place.getAddress(), place.getPhoneNumber()+" "+place.getAttributions()+" :: "+place.getLocale(), place.getWebsiteUri()));
}
But I want country code also. Is there any way to get the country code from places API ?
If no, Is there any alternate service for getting the country name & code while typing ?

With the Place object retrieved, you can get the Locale object associated :
Locale locale = place.getLocale();
With this Locale object you can then get the Country code via :
locale.getCountry();
And the country name with :
locale.getDisplayCountry();
You can look to more available methods at the docs :
http://developer.android.com/reference/java/util/Locale.html
EDIT :
If Locale from the Place object is null you can use a Geocoder to get information from GPS coordinates :
LatLng coordinates = place.getLatLng(); // Get the coordinates from your place
Geocoder geocoder = new Geocoder(this, Locale.getDefault());
List<Address> addresses = geocoder.getFromLocation(
coordinates.latitude,
coordinates.longitude,
1); // Only retrieve 1 address
Address address = addresses.get(0);
Then you can call these methods to get the informations you want
address.getCountryCode();
address.getCountryName();
More methods on the Address objects : http://developer.android.com/reference/android/location/Address.html
Be aware that the Geocoder methods should be call on a background thread to not block the UI and that it could also retrieve no answer.

This will give the correct country code.
TelephonyManager tm = (TelephonyManager)activity.getSystemService(Context.TELEPHONY_SERVICE);
String countryCode = tm.getSimCountryIso();

Here all answer points to either deprecated SDK or using TelephonyManager or GeoCoder(while OP clearly mentioned getting the country code from places SDK response. I also it should be obvious that choosing a country or country code from the OS(TelephonyManager or GeoCoder) should not necessarily match the location returned by the User selected location from the picker).
In the newer places SDK(com.google.android.libraries.places:places:2.4.0), I am managed to get the country code by following the code snippet
Make sure to include the following field(in addition to what more you require)
val fields = listOf(
Place.Field.ADDRESS_COMPONENTS,
// ... More fields that you need
)
And to parse the country code follow this code
place.addressComponents.asList().find { it.types.contains("country") }.shortName

Adding latitude and Longitude into a Google Places URL in Android

I'm working on finding nearby places in my Android app. I can find the current latitude and longitude as a double and then converting the double into a string to display in a textview (just to prove to myself that it's working). The problem I'm having is passing the lat. & long. strings into the Places URL. The URL displays the JSON data when I use a fixed value string for the lat. and long., but it returns INVALID_REQUEST when I try to pass the obtained doubles converted into strings into the URL. Here's what it looks like:
Location currentLocation;
double currLatitude;
double currLongitude;
String latString;
String longiString;
String latString2 = "30.4335320";
String longiString2 = "-97.9822360";
towers = locMan.getBestProvider(criteria, true);
currentLocation = locMan.getLastKnownLocation(towers);
currLatitude = currentLocation.getLatitude();
currLongitude = currentLocation.getLongitude();
latString = String.valueOf(currLatitude);
longiString = String.valueOf(currLongitude);
latiText.setText(latString);
longiText.setText(longiString);
I think maybe I'm not parsing the doubles into strings correctly here?
latString = String.valueOf(currLatitude);
longiString = String.valueOf(currLongitude);
because in the below URL when I use the parsed values latString, longiString that's when I get INVALID_REQUEST, but if I pass latString2, longiString2, which are given values, the URL displays the JSON data. Here's the URL:
String tURL="https://maps.googleapis.com/maps/api/place/search/json?"
+ "location=" + latString + "," + longiString
+ "&radius=25000&"
+ "types=church&name=baptist&sensor=false&key="
+ myPlaceKey;

I fugured it out. My problem was that the activity that returned the URL was a separate Activity from the URL string builder. And the URL returning Activity did not call the method where I obtained the latitude and longitude, so I think the URL the returning Activity obtained basically had "null" for the coordinates. So I combined the two Activities so now the coordinates are obtained, then the URL is built, then the URL result is displayed in a textview, all in one Activity - and it WORKS! I'm such an idiot!

"Google Map" how can we get Lattitude and Longitude by passing the Address

In Google Maps how can we get Latitude and Longitude by passing the Address?
and what is the Address format need to be mentioned?

To find latitude and longitude from address string .....
Make object of Geocoder
Call getFromLocationName() pass the address (place name) string as argument also maximum number of results you want for that place name
Here is demo ...
Geocoder coder = new Geocoder(LocationMap.this);
List<Address> geocodeResults = coder.getFromLocationName(placeName, 10);
Iterator<Address> locations = geocodeResults.iterator();
while (locations.hasNext()) {
Address loc = locations.next();
_lattitude_ = loc.getLatitude() ;
_longidude_ = loc.getLongitude();
}
And there are no specific address format required.
For example you can try any city name, country name, hotel name, area name, road name, well known place name ( Try "Eiffel tower") ... anything (from many things).

Found this older post. Should solve your problem.

how to find continent in particular location using Geocoder in android app

i am developing android application using Geocoder services,
I have an application where I try to get address of a location based on
the latitude,longitude coordinates its working fine.
my problem is how to get continent of particular address.
example : double lat=17; double lon=78.49;
List addresses = new Geocoder(Shout.this,Locale.getDefault()).getFromLocation(lat, lon, 1);
i am using this code output is India,Hyderabad
this address related how to find continent ,please help me some valuable solution.
i am getting country name dynamically using geocoder is their any chance to get in continent name along with country.it is difficult to maintain statically i need dynamically
any free services find continent based services
Thanks In Advance

As we have limited number of Continents, it's good to use static list of data.
We can use below json_str (found here) which have CountryCode & Continent
String json_str = "{\"AD\":\"Europe\",\"AE\":\"Asia\",\"AF\":\"Asia\",\"AG\":\"North America\",\"AI\":\"North America\",\"AL\":\"Europe\",\"AM\":\"Asia\",\"AN\":\"North America\",\"AO\":\"Africa\",\"AQ\":\"Antarctica\",\"AR\":\"South America\",\"AS\":\"Australia\",\"AT\":\"Europe\",\"AU\":\"Australia\",\"AW\":\"North America\",\"AZ\":\"Asia\",\"BA\":\"Europe\",\"BB\":\"North America\",\"BD\":\"Asia\",\"BE\":\"Europe\",\"BF\":\"Africa\",\"BG\":\"Europe\",\"BH\":\"Asia\",\"BI\":\"Africa\",\"BJ\":\"Africa\",\"BM\":\"North America\",\"BN\":\"Asia\",\"BO\":\"South America\",\"BR\":\"South America\",\"BS\":\"North America\",\"BT\":\"Asia\",\"BW\":\"Africa\",\"BY\":\"Europe\",\"BZ\":\"North America\",\"CA\":\"North America\",\"CC\":\"Asia\",\"CD\":\"Africa\",\"CF\":\"Africa\",\"CG\":\"Africa\",\"CH\":\"Europe\",\"CI\":\"Africa\",\"CK\":\"Australia\",\"CL\":\"South America\",\"CM\":\"Africa\",\"CN\":\"Asia\",\"CO\":\"South America\",\"CR\":\"North America\",\"CU\":\"North America\",\"CV\":\"Africa\",\"CX\":\"Asia\",\"CY\":\"Asia\",\"CZ\":\"Europe\",\"DE\":\"Europe\",\"DJ\":\"Africa\",\"DK\":\"Europe\",\"DM\":\"North America\",\"DO\":\"North America\",\"DZ\":\"Africa\",\"EC\":\"South America\",\"EE\":\"Europe\",\"EG\":\"Africa\",\"EH\":\"Africa\",\"ER\":\"Africa\",\"ES\":\"Europe\",\"ET\":\"Africa\",\"FI\":\"Europe\",\"FJ\":\"Australia\",\"FK\":\"South America\",\"FM\":\"Australia\",\"FO\":\"Europe\",\"FR\":\"Europe\",\"GA\":\"Africa\",\"GB\":\"Europe\",\"GD\":\"North America\",\"GE\":\"Asia\",\"GF\":\"South America\",\"GG\":\"Europe\",\"GH\":\"Africa\",\"GI\":\"Europe\",\"GL\":\"North America\",\"GM\":\"Africa\",\"GN\":\"Africa\",\"GP\":\"North America\",\"GQ\":\"Africa\",\"GR\":\"Europe\",\"GS\":\"Antarctica\",\"GT\":\"North America\",\"GU\":\"Australia\",\"GW\":\"Africa\",\"GY\":\"South America\",\"HK\":\"Asia\",\"HN\":\"North America\",\"HR\":\"Europe\",\"HT\":\"North America\",\"HU\":\"Europe\",\"ID\":\"Asia\",\"IE\":\"Europe\",\"IL\":\"Asia\",\"IM\":\"Europe\",\"IN\":\"Asia\",\"IO\":\"Asia\",\"IQ\":\"Asia\",\"IR\":\"Asia\",\"IS\":\"Europe\",\"IT\":\"Europe\",\"JE\":\"Europe\",\"JM\":\"North America\",\"JO\":\"Asia\",\"JP\":\"Asia\",\"KE\":\"Africa\",\"KG\":\"Asia\",\"KH\":\"Asia\",\"KI\":\"Australia\",\"KM\":\"Africa\",\"KN\":\"North America\",\"KP\":\"Asia\",\"KR\":\"Asia\",\"KW\":\"Asia\",\"KY\":\"North America\",\"KZ\":\"Asia\",\"LA\":\"Asia\",\"LB\":\"Asia\",\"LC\":\"North America\",\"LI\":\"Europe\",\"LK\":\"Asia\",\"LR\":\"Africa\",\"LS\":\"Africa\",\"LT\":\"Europe\",\"LU\":\"Europe\",\"LV\":\"Europe\",\"LY\":\"Africa\",\"MA\":\"Africa\",\"MC\":\"Europe\",\"MD\":\"Europe\",\"ME\":\"Europe\",\"MG\":\"Africa\",\"MH\":\"Australia\",\"MK\":\"Europe\",\"ML\":\"Africa\",\"MM\":\"Asia\",\"MN\":\"Asia\",\"MO\":\"Asia\",\"MP\":\"Australia\",\"MQ\":\"North America\",\"MR\":\"Africa\",\"MS\":\"North America\",\"MT\":\"Europe\",\"MU\":\"Africa\",\"MV\":\"Asia\",\"MW\":\"Africa\",\"MX\":\"North America\",\"MY\":\"Asia\",\"MZ\":\"Africa\",\"NA\":\"Africa\",\"NC\":\"Australia\",\"NE\":\"Africa\",\"NF\":\"Australia\",\"NG\":\"Africa\",\"NI\":\"North America\",\"NL\":\"Europe\",\"NO\":\"Europe\",\"NP\":\"Asia\",\"NR\":\"Australia\",\"NU\":\"Australia\",\"NZ\":\"Australia\",\"OM\":\"Asia\",\"PA\":\"North America\",\"PE\":\"South America\",\"PF\":\"Australia\",\"PG\":\"Australia\",\"PH\":\"Asia\",\"PK\":\"Asia\",\"PL\":\"Europe\",\"PM\":\"North America\",\"PN\":\"Australia\",\"PR\":\"North America\",\"PS\":\"Asia\",\"PT\":\"Europe\",\"PW\":\"Australia\",\"PY\":\"South America\",\"QA\":\"Asia\",\"RE\":\"Africa\",\"RO\":\"Europe\",\"RS\":\"Europe\",\"RU\":\"Europe\",\"RW\":\"Africa\",\"SA\":\"Asia\",\"SB\":\"Australia\",\"SC\":\"Africa\",\"SD\":\"Africa\",\"SE\":\"Europe\",\"SG\":\"Asia\",\"SH\":\"Africa\",\"SI\":\"Europe\",\"SJ\":\"Europe\",\"SK\":\"Europe\",\"SL\":\"Africa\",\"SM\":\"Europe\",\"SN\":\"Africa\",\"SO\":\"Africa\",\"SR\":\"South America\",\"ST\":\"Africa\",\"SV\":\"North America\",\"SY\":\"Asia\",\"SZ\":\"Africa\",\"TC\":\"North America\",\"TD\":\"Africa\",\"TF\":\"Antarctica\",\"TG\":\"Africa\",\"TH\":\"Asia\",\"TJ\":\"Asia\",\"TK\":\"Australia\",\"TM\":\"Asia\",\"TN\":\"Africa\",\"TO\":\"Australia\",\"TR\":\"Asia\",\"TT\":\"North America\",\"TV\":\"Australia\",\"TW\":\"Asia\",\"TZ\":\"Africa\",\"UA\":\"Europe\",\"UG\":\"Africa\",\"US\":\"North America\",\"UY\":\"South America\",\"UZ\":\"Asia\",\"VC\":\"North America\",\"VE\":\"South America\",\"VG\":\"North America\",\"VI\":\"North America\",\"VN\":\"Asia\",\"VU\":\"Australia\",\"WF\":\"Australia\",\"WS\":\"Australia\",\"YE\":\"Asia\",\"YT\":\"Africa\",\"ZA\":\"Africa\",\"ZM\":\"Africa\",\"ZW\":\"Africa\"}";
And From Geocoder() we can get CountryCode like below:
try {
JSONObject jsonObject = new JSONObject(json_str);
Geocoder geocoder = new Geocoder(this, Locale.ENGLISH);
List<Address> addresses = geocoder.getFromLocation(latitude, longitude, 1);
if (addresses.size() > 0) {
Address fetchedAddress = addresses.get(0);
// getCountryCode from Address
String countryCode = fetchedAddress.getCountryCode();
// get continentName here
String continentName = jsonObject.getString(countryCode);
}
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}

I don't think there is such information given by Google's API. The only solution I can think of is to have some kind of static data structure mapping country names to continent names (which you would presumably have to find yourself somehow, for instance by scraping this web page... ). Then you could text search the string that GeoCoder gives you and return the continent corresponding to the closest matching country name (which would be the key in your String mapping). (You would also have to treat the special case of US addresses which, annoyingly, end just with the state code)

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

How to get the latitude and longitude from city name in android? - android

In my application am setting a default value to latitude and longitude. When i type the cityname in edittext i need to move that point to that place where i need

Related

Android Google Places API- Is there any way to get the city from Place objects?

Get country code from PlaceAutocompleteFragment android (Google Places API)

Adding latitude and Longitude into a Google Places URL in Android

"Google Map" how can we get Lattitude and Longitude by passing the Address

how to find continent in particular location using Geocoder in android app

Categories

Resources