Comment trouver Emplacement à proximité de ma position actuelle?

Question

J'ai besoin d'une idée sur "Comment trouver l'hôpital, l'école, le restaurant près de chez moi" en utilisant android, Comment est-ce possible?

Answer 1

Utilisez Google places api pour savoir à proximité hôpital ou quoi .....

Answer 2

Étape par étape,

Google endroit api sont utilisés pour accéder à proximité de repère anloaction

Étape 1: accédez à API Console pour obtenir l'API de lieu

https://code.google.com/apis/console/

et sélectionnez sur les services onglet

sur le service lieu

maintenant sélectionnez l'onglet d'accès API et obtenir l'API KEY

maintenant vous avez une clé API pour obtenir lieu

---

maintenant dans la programmation

* Etape 2 *: tout d'abord créer une classe nommée Place.java. Cette classe est utilisée pour contenir la propriété de lieu fournie par 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 + '}'; 
    } 

} 

maintenant créer une classe nommée 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=<key> 
    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 + "\n"); 
      } 

      bufferedReader.close(); 
     } 

     catch (Exception e) 
     { 

      e.printStackTrace(); 

     } 

     return content.toString(); 
    } 
} 

Maintenant, créez une nouvelle activité où vous souhaitez obtenir la liste des lieux les plus proches.

/** * */

package com.android.code.GoogleMap.NearsetLandmark; 

    import java.io.BufferedInputStream; 
    import java.io.BufferedOutputStream; 
    import java.io.ByteArrayOutputStream; 
    import java.io.IOException; 
    import java.io.InputStream; 
    import java.net.MalformedURLException; 
    import java.net.URL; 
    import java.util.List; 


    import android.app.AlertDialog; 
    import android.app.ListActivity; 
    import android.content.Context; 
    import android.graphics.Bitmap; 
    import android.graphics.BitmapFactory; 
    import android.graphics.Canvas; 
    import android.graphics.Paint; 
    import android.graphics.Point; 
    import android.graphics.drawable.Drawable; 
    import android.location.Address; 
    import android.location.Location; 
    import android.location.LocationListener; 
    import android.location.LocationManager; 
    import android.net.Uri; 
    import android.os.AsyncTask; 
    import android.os.Bundle; 
    import android.util.Log; 
    import android.view.ContextMenu; 
    import android.view.ContextMenu.ContextMenuInfo; 
    import android.view.LayoutInflater; 
    import android.view.Menu; 
    import android.view.MenuItem; 
    import android.view.View; 
    import android.view.ViewGroup; 
    import android.widget.ArrayAdapter; 
    import android.widget.BaseAdapter; 
    import android.widget.ImageView; 
    import android.widget.ListView; 
    import android.widget.TextView; 

    import com.android.code.R; 
    import com.google.android.maps.MapActivity; 
    import com.google.android.maps.MapController; 
    import com.google.android.maps.MapView; 
    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; 

    /** 
    * @author dwivedi ji  * 
    *  */ 
    public class CheckInActivity extends ListActivity { 

    private String[] placeName; 
    private String[] imageUrl; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     // TODO Auto-generated method stub 
     super.onCreate(savedInstanceState); 




     new GetPlaces(this,getListView()).execute(); 
    } 

    class GetPlaces extends AsyncTask<Void, Void, Void>{ 
     Context context; 
     private ListView listView; 
     private ProgressDialog bar; 
     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); 
      bar.dismiss(); 
       this.listView.setAdapter(new ArrayAdapter<String>(context, android.R.layout.simple_list_item_1, placeName)); 

     } 

     @Override 
     protected void onPreExecute() { 
      // TODO Auto-generated method stub 
      super.onPreExecute(); 
       bar = new ProgressDialog(context); 
      bar.setIndeterminate(true); 
      bar.setTitle("Loading"); 
      bar.show(); 


     } 

     @Override 
     protected Void doInBackground(Void... arg0) { 
      // TODO Auto-generated method stub 
      findNearLocation(); 
      return null; 
     } 

    } 
    public void findNearLocation() { 

     PlacesService service = new PlacesService("past your key"); 

     /* 
     Hear you should call the method find nearst place near to central park new delhi then we pass the lat and lang of central park. hear you can be pass you current location lat and lang.The third argument is used to set the specific place if you pass the atm the it will return the list of nearest atm list. if you want to get the every thing then you should be pass "" only 
     */ 

/* hear you should be pass the you current location latitude and langitude, */ 
      List<Place> findPlaces = service.findPlaces(28.632808,77.218276,""); 

      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(); 

     } 





    } 


}