Step by step,
Google place api are used to access near by landmark of anloaction
Step 1 : Go to API Console for obtaining the Place API
https://code.google.com/apis/console/
and select on services tab
on the place service
now select API Access tab and get the API KEY
now you have a API key for getting place
Now in programming
*Step 2 * : first create a class named Place.java. This class is used to contain the property of place which are provided by Place api.
package com.android.code.GoogleMap.NearsetLandmark;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.json.JSONException;
import org.json.JSONObject;
public class Place {
private String id;
private String icon;
private String name;
private String vicinity;
private Double latitude;
private Double longitude;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getIcon() {
return icon;
}
public void setIcon(String icon) {
this.icon = icon;
}
public Double getLatitude() {
return latitude;
}
public void setLatitude(Double latitude) {
this.latitude = latitude;
}
public Double getLongitude() {
return longitude;
}
public void setLongitude(Double longitude) {
this.longitude = longitude;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getVicinity() {
return vicinity;
}
public void setVicinity(String vicinity) {
this.vicinity = vicinity;
}
static Place jsonToPontoReferencia(JSONObject pontoReferencia) {
try {
Place result = new Place();
JSONObject geometry = (JSONObject) pontoReferencia.get("geometry");
JSONObject location = (JSONObject) geometry.get("location");
result.setLatitude((Double) location.get("lat"));
result.setLongitude((Double) location.get("lng"));
result.setIcon(pontoReferencia.getString("icon"));
result.setName(pontoReferencia.getString("name"));
result.setVicinity(pontoReferencia.getString("vicinity"));
result.setId(pontoReferencia.getString("id"));
return result;
} catch (JSONException ex) {
Logger.getLogger(Place.class.getName()).log(Level.SEVERE, null, ex);
}
return null;
}
@Override
public String toString() {
return "Place{" + "id=" + id + ", icon=" + icon + ", name=" + name + ", latitude=" + latitude + ", longitude=" + longitude + '}';
}
}
Now create a class named PlacesService
package com.android.code.GoogleMap.NearsetLandmark;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.util.Log;
public class PlacesService {
private String API_KEY;
public PlacesService(String apikey) {
this.API_KEY = apikey;
}
public void setApiKey(String apikey) {
this.API_KEY = apikey;
}
public List<Place> findPlaces(double latitude, double longitude,String placeSpacification)
{
String urlString = makeUrl(latitude, longitude,placeSpacification);
try {
String json = getJSON(urlString);
System.out.println(json);
JSONObject object = new JSONObject(json);
JSONArray array = object.getJSONArray("results");
ArrayList<Place> arrayList = new ArrayList<Place>();
for (int i = 0; i < array.length(); i++) {
try {
Place place = Place.jsonToPontoReferencia((JSONObject) array.get(i));
Log.v("Places Services ", ""+place);
arrayList.add(place);
} catch (Exception e) {
}
}
return arrayList;
} catch (JSONException ex) {
Logger.getLogger(PlacesService.class.getName()).log(Level.SEVERE, null, ex);
}
return null;
}
//https://maps.googleapis.com/maps/api/place/search/json?location=28.632808,77.218276&radius=500&types=atm&sensor=false&key=apikey
private String makeUrl(double latitude, double longitude,String place) {
StringBuilder urlString = new StringBuilder("https://maps.googleapis.com/maps/api/place/search/json?");
if (place.equals("")) {
urlString.append("&location=");
urlString.append(Double.toString(latitude));
urlString.append(",");
urlString.append(Double.toString(longitude));
urlString.append("&radius=1000");
// urlString.append("&types="+place);
urlString.append("&sensor=false&key=" + API_KEY);
} else {
urlString.append("&location=");
urlString.append(Double.toString(latitude));
urlString.append(",");
urlString.append(Double.toString(longitude));
urlString.append("&radius=1000");
urlString.append("&types="+place);
urlString.append("&sensor=false&key=" + API_KEY);
}
return urlString.toString();
}
protected String getJSON(String url) {
return getUrlContents(url);
}
private String getUrlContents(String theUrl)
{
StringBuilder content = new StringBuilder();
try {
URL url = new URL(theUrl);
URLConnection urlConnection = url.openConnection();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()), 8);
String line;
while ((line = bufferedReader.readLine()) != null)
{
content.append(line + "
");
}
bufferedReader.close();
}
catch (Exception e)
{
e.printStackTrace();
}
return content.toString();
}
}
Now create a new Activity where you want to get the list of nearest places.
/**
*
*/
package com.android.code.GoogleMap.NearsetLandmark;
public class CheckInActivity extends ListActivity{
@Override
protected void onCreate(Bundle arg0) {
// TODO Auto-generated method stub
super.onCreate(arg0);
new GetPlaces(this, getListView()).execute();
}
class GetPlaces extends AsyncTask<Void, Void, Void>{
private ProgressDialog dialog;
private Context context;
private String[] placeName;
private String[] imageUrl;
private ListView listView;
public GetPlaces(Context context, ListView listView) {
// TODO Auto-generated constructor stub
this.context = context;
this.listView = listView;
}
@Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
dialog.dismiss();
listView.setAdapter(new ArrayAdapter<String>(context, android.R.layout.simple_expandable_list_item_1,placeName));
}
@Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
dialog = new ProgressDialog(context);
dialog.setCancelable(true);
dialog.setMessage("Loading..");
dialog.isIndeterminate();
dialog.show();
}
@Override
protected Void doInBackground(Void... arg0) {
// TODO Auto-generated method stub
PlacesService service = new PlacesService("paste your place api key");
List<Place> findPlaces = service.findPlaces(28.632808,77.218276,"hospital"); // hospiral for hospital
// atm for ATM
placeName = new String[findPlaces.size()];
imageUrl = new String[findPlaces.size()];
for (int i = 0; i < findPlaces.size(); i++) {
Place placeDetail = findPlaces.get(i);
placeDetail.getIcon();
System.out.println( placeDetail.getName());
placeName[i] =placeDetail.getName();
imageUrl[i] =placeDetail.getIcon();
}
return null;
}
}
}