CODEWITHSUNDEEP
androidgoogle-mapsgeocoding
harish
harish

Reputation: 1765

How to get the latitude and longitude from city name in 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

Upvotes: 1

Views: 10568

Answers (4)

Anand M Joseph
Anand M Joseph

Reputation: 885

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)

Upvotes: 0

Nishant
Nishant

Reputation: 32222

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();
 }

Upvotes: 3

Wangchao0721
Wangchao0721

Reputation: 909

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

Upvotes: 1

Julian Suarez
Julian Suarez

Reputation: 4521

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.

Upvotes: 0

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