Question

使用google places api，每次请求最多可获得20个结果。为什么会这样？

我可以通过任何其他方法增加结果数量吗？

Answer 1

不幸的是，

20是最大值。你可以做的是做几个半径不同的请求，并将结果合并/过滤。

Answer 2

您可以编写一种方法，一次获得60个结果（每页20个），但是获得所有结果会有延迟 -

public PlacesList search(double latitude, double longitude, double radius, String types)
            throws Exception {

        try {

            HttpRequestFactory httpRequestFactory = createRequestFactory(HTTP_TRANSPORT);
            HttpRequest request = httpRequestFactory
                    .buildGetRequest(new GenericUrl("https://maps.googleapis.com/maps/api/place/search/json?"));
            request.getUrl().put("key", YOUR_API_KEY);
            request.getUrl().put("location", latitude + "," + longitude);
            request.getUrl().put("radius", radius); 
            request.getUrl().put("sensor", "false");
            request.getUrl().put("types", types);

            PlacesList list = request.execute().parseAs(PlacesList.class);

            if(list.next_page_token!=null || list.next_page_token!=""){
                Thread.sleep(4000);
                         /*Since the token can be used after a short time it has been  generated*/
                request.getUrl().put("pagetoken",list.next_page_token);
                PlacesList temp = request.execute().parseAs(PlacesList.class);
                list.results.addAll(temp.results);

            }
            return list;

        } catch (HttpResponseException e) {
            return null;
        }

    }

Google Places API：结果数量

2 个答案: