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我一直在試圖提取GOOLGE Places API的照片參考，但都沒有成功。我想知道是否有人可以幫助我。下面是我的代碼：谷歌Places API的photo_reference
// KEY Strings
public static String KEY_REFERENCE = "reference"; // id of the place
public static String KEY_NAME = "name"; // name of the place
public static String KEY_VICINITY = "vicinity"; // Place area name
public static String KEY_PHOTO = "photo_reference";
class LoadPlaces extends AsyncTask<String, String, String> {
/**
* getting google places JSON response
* */
protected String doInBackground(String... args) {
// creating Places class object
googlePlaces = new GooglePlaces();
try {
String types = MenuActivity.type;
String keyword = MenuActivity.keyword;
// get nearest places
nearPlaces = googlePlaces.search(gps.getLatitude(),gps.getLongitude(),
types, keyword);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(String file_url) {
// updating UI from Background Thread
runOnUiThread(new Runnable() {
public void run() {
/**
* Updating parsed Places into LISTVIEW
* */
// Get JSON response status
String status = nearPlaces.status;
// Check for OK status
if (status.equals("OK")) {
// Successfully got places details
if (nearPlaces.results != null) {
// loop through each place
for (Place p : nearPlaces.results) {
HashMap<String, String> map = new HashMap<String, String>();
map.put(KEY_REFERENCE, p.reference);
map.put(KEY_NAME, p.name);
map.put(KEY_PHOTO,p.photo);
map.put(KEY_VICINITY, p.vicinity);
// adding HashMap to ArrayList
placesListItems.add(map);
}
// list adapter - removed rating
ListAdapter adapter = new SimpleAdapter(
MainActivity.this, placesListItems,
R.layout.list_item, new String[] {
KEY_REFERENCE, KEY_NAME, KEY_VICINITY, KEY_PHOTO},
new int[] { R.id.reference, R.id.name, R.id.address, R.id.phptp});
// Adding data into ListView
lv.setAdapter(adapter);
}
}
}
下面是我的代碼，執行搜索和分析數據：
public class GooglePlaces {
/** Global instance of the HTTP transport. */
private static final HttpTransport HTTP_TRANSPORT = new NetHttpTransport();
private static final String LOG_KEY = "GGPlace";
// Google API Key
private static final String API_KEY = "";
// Google Places serach
private static final String PLACES_SEARCH_URL = "https://maps.googleapis.com/maps/api/place/nearbysearch/json?&rankby=distance";
private double _latitude;
private double _longitude;
private double _radius;
private String address;
public PlacesList search(double latitude, double longitude, String types, String keyword)
throws Exception {
this._latitude = latitude;
this._longitude = longitude;
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("sensor", "true");
if(types != null)
{
request.getUrl().put("types", types);
request.getUrl().put("keyword", keyword);
}
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;
}
}
public static HttpRequestFactory createRequestFactory(
final HttpTransport transport) {
return transport.createRequestFactory(new HttpRequestInitializer() {
public void initialize(HttpRequest request) {
GoogleHeaders headers = new GoogleHeaders();
headers.setApplicationName("APP NAME");
headers.gdataVersion="2";
request.setHeaders(headers);
JsonHttpParser parser = new JsonHttpParser(new JacksonFactory());
request.addParser(parser);
}
});
}
}
這是我PlaceList類：
public class PlacesList implements Serializable {
@Key
public String status;
@Key
public List<Place> results;
}
這裏是我的地方類：
public class Place implements Serializable {
@Key
public String id;
@Key
public String name;
@Key
public String reference;
@Key
public String vicinity;
@Key
public Geometry geometry;
@Key
public List<Photo> photos;
}
最後我的照片分類：
public class Photo implements Serializable {
@Key
public String photo_reference;
@Key
public int height;
@Key
public int width;
}
我想我打電話或通過錯誤的方式傳遞photo_reference。我希望有人能幫助我。我已經爲此工作了幾個星期，幾乎完全放棄了。
這可能不是問題，但使用的是'runOnUiThread'在'onPostExecute（）'。由於'onPostExecute（）'在UI線程上運行，因此這不是必需的。 – Vikram
我想我的問題還真是，谷歌Places API的的photo_reference與結果數組的數組，我不知道如何訪問並正確解析它。 –
如果你想用一個庫來處理此分析對您（或只是查看源代碼，看看它是如何正在做），你可以檢查出[鏈輪（https://github.com/pushbit/sprockets） （披露：我是開發人員）。搜索結果被分解成與您已經使用的類非常相似的類。而且還有對其他谷歌Places API的服務（詳細信息，照片等） – pushbit