[英]Android: Finding nearby places with Google Places API
我正在嘗試使用Google Places API獲取附近地點的列表。 我已從Google Devloper控制台啟用了需要的API並擁有有效的API密鑰。 我能夠得到我的位置。 在我得到我當前的位置后,我試圖獲得附近的地方列表,但它返回空。
我也試過給出null
PlaceFilter
但它給出了相同的結果。
private class MyGoogleMapOnMyLocationListener implements
OnMyLocationChangeListener,
ConnectionCallbacks,
OnConnectionFailedListener {
private GoogleApiClient mGoogleApiClient;
@Override
public void onMyLocationChange(Location location) {
if (!hasLastLocation) {
hasLastLocation = true;
mLastLocation = location;
Log.d(LOG_TAG, "Location: " + location.toString());
if (googleMap != null ) {
googleMap.animateCamera(CameraUpdateFactory.newLatLngZoom(
new LatLng(location.getLatitude(), location.getLongitude()), 16.0f));
if (mGoogleApiClient == null) {
mGoogleApiClient = new GoogleApiClient
.Builder(getActivity())
.addApi(Places.GEO_DATA_API)
.addApi(Places.PLACE_DETECTION_API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
mGoogleApiClient.connect();
}
}
}
}
@Override
public void onConnected(Bundle bundle) {
Log.d(LOG_TAG, "Google Api Client connected.");
if (mGoogleApiClient != null) {
Log.d(LOG_TAG, "Getting nearby places...");
PendingResult<PlaceLikelihoodBuffer> result =
Places.PlaceDetectionApi.getCurrentPlace(mGoogleApiClient, null);
result.setResultCallback(new ResultCallback<PlaceLikelihoodBuffer>() {
@Override
public void onResult(PlaceLikelihoodBuffer likelyPlaces) {
Log.d(LOG_TAG, "Got results: " + likelyPlaces.getCount() + " place found.");
for (PlaceLikelihood placeLikelihood : likelyPlaces) {
Log.i(LOG_TAG, String.format("Place '%s' has likelihood: %g",
placeLikelihood.getPlace().getName(),
placeLikelihood.getLikelihood()));
}
likelyPlaces.release();
}
});
}
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
}
這是我的地圖片段
我一直關注Google Places API for Android的說明
我已嘗試接受此問題的答案: 在Android中使用Google Maps API顯示當前位置和附近的地點以及兩個地方之間的路線
我已經從Google Developer Console啟用了其他與地圖相關的API,但它確實有用。
你可能會給出代碼和完整的演示
import org.apache.http.client.HttpResponseException;
import android.util.Log;
import com.google.api.client.googleapis.GoogleHeaders;
import com.google.api.client.http.GenericUrl;
import com.google.api.client.http.HttpRequest;
import com.google.api.client.http.HttpRequestFactory;
import com.google.api.client.http.HttpRequestInitializer;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.http.json.JsonHttpParser;
import com.google.api.client.json.jackson.JacksonFactory;
@SuppressWarnings("deprecation")
public class GooglePlaces {
/** Global instance of the HTTP transport. */
private static final HttpTransport HTTP_TRANSPORT = new NetHttpTransport();
// Google API Key
private static final String API_KEY = "<Your KEY>";
// Google Places serach url's
private static final String PLACES_SEARCH_URL = "https://maps.googleapis.com/maps/api/place/search/json?";
private static final String PLACES_TEXT_SEARCH_URL = "https://maps.googleapis.com/maps/api/place/search/json?";
private static final String PLACES_DETAILS_URL = "https://maps.googleapis.com/maps/api/place/details/json?";
private double _latitude;
private double _longitude;
private double _radius;
/**
* Searching places
* @param latitude - latitude of place
* @params longitude - longitude of place
* @param radius - radius of searchable area
* @param types - type of place to search
* @return list of places
* */
public PlacesList search(double latitude, double longitude, double radius, String types)
throws Exception {
this._latitude = latitude;
this._longitude = longitude;
this._radius = radius;
try {
HttpRequestFactory httpRequestFactory = createRequestFactory(HTTP_TRANSPORT);
HttpRequest request = httpRequestFactory
.buildGetRequest(new GenericUrl(PLACES_SEARCH_URL));
request.getUrl().put("key", API_KEY);
request.getUrl().put("location", _latitude + "," + _longitude);
request.getUrl().put("radius", _radius); // in meters
request.getUrl().put("sensor", "false");
if(types != null)
request.getUrl().put("types", types);
PlacesList list = request.execute().parseAs(PlacesList.class);
// Check log cat for places response status
Log.d("Places Status", "" + list.status);
return list;
} catch (HttpResponseException e) {
Log.e("Error:", e.getMessage());
return null;
}
}
/**
* Searching single place full details
* @param refrence - reference id of place
* - which you will get in search api request
* */
public PlaceDetails getPlaceDetails(String reference) throws Exception {
try {
HttpRequestFactory httpRequestFactory = createRequestFactory(HTTP_TRANSPORT);
HttpRequest request = httpRequestFactory
.buildGetRequest(new GenericUrl(PLACES_DETAILS_URL));
request.getUrl().put("key", API_KEY);
request.getUrl().put("reference", reference);
request.getUrl().put("sensor", "false");
PlaceDetails place = request.execute().parseAs(PlaceDetails.class);
return place;
} catch (HttpResponseException e) {
Log.e("Error in Perform Details", e.getMessage());
throw e;
}
}
/**
* Creating http request Factory
* */
public static HttpRequestFactory createRequestFactory(
final HttpTransport transport) {
return transport.createRequestFactory(new HttpRequestInitializer() {
public void initialize(HttpRequest request) {
GoogleHeaders headers = new GoogleHeaders();
headers.setApplicationName("AndroidHive-Places-Test");
request.setHeaders(headers);
JsonHttpParser parser = new JsonHttpParser(new JacksonFactory());
request.addParser(parser);
}
});
}
}
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