使用Android中的Google Maps API从用户位置获取附近地点的结果

这是第一次使用谷歌地图API和谷歌地方API.我正在做一个演示应用程序,显示最靠近用户位置的列表医院(例如)以及到每个医院的路线.我能够通过以下代码获取用户的位置：

public class MainActivity extends ActionBarActivity {
    private GoogleMap map;
    UiSettings mapSettings;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
        map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
 
        if (map != null) {
           // map.addMarker(new MarkerOptions().position(myLocation).title("Start"));
            map.setMyLocationEnabled(true);
            mapSettings = map.getUiSettings();
            mapSettings.setScrollGesturesEnabled(true);
            mapSettings.setZoomControlsEnabled(true);
        }
    }
}

xml文件：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
 
    <fragment
        android:id="@+id/map"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        class="com.google.android.gms.maps.MapFragment" />
 
 
</RelativeLayout>

我的问题如何使用google places API获取医院列表并显示它们.任何帮助,提示,演练或教程都将被认可.谢谢你提前.

解决方法

对于Android,我尝试使用Android的Place picker.它可以将内置的位置选择器UI小部件添加到您的应用程序,以便用户可以从地图上显示的一组附近位置中进行选择.它易于使用,您只需要做的是：

int PLACE_PICKER_REQUEST = 1;
PlacePicker.IntentBuilder builder = new PlacePicker.IntentBuilder();    
startActivityForResult(builder.build(this),PLACE_PICKER_REQUEST);

它将显示下面的UI为您选择一个地方,您可以通过以下方式获取地点信息：

protected void onActivityResult(int requestCode,int resultCode,Intent data) {
  if (requestCode == PLACE_PICKER_REQUEST) {
    if (resultCode == RESULT_OK) {
        Place place = PlacePicker.getPlace(data,this);
        String toastMsg = String.format("Place: %s",place.getName());
        Toast.makeText(this,toastMsg,Toast.LENGTH_LONG).show();
    }
  }
}

有关详细信息,请参阅指南here和代码 here.

但是,它无法设置场所类型,因为它没有Build in UI的功能.如果您确实需要设置,则应使用Google Places API Web服务API here,自行搜索位置,解析JSON数据并显示你自己的UI.

通过“附近搜索”,您可以搜索指定区域内的位置.您可以通过提供关键字或指定要搜索的地点类型来优化搜索请求.

附近搜索请求是以下格式的HTTP URL：

https://maps.googleapis.com/maps/api/place/nearbysearch/output?parameters

请注意,在参数中您需要设置types = hospital

编辑

有关如何使用google places API Web API Web服务API在JSON中传递特定位置的搜索请求的示例.

请求

location: -33.8670,151.1957
radius: 500
types: food
name: cruise
key: API_KEY

网址为：

https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=-33.8670,151.1957&radius=500&types=food&name=cruise&key=API_KEY

和响应JSON像这样：

{
   "debug_log" : {
      "line" : []
   },"html_attributions" : [],"logging_info" : {
      "experiment_id" : [],"query_geographic_location" : "AU"
   },"results" : [
      {
         "geometry" : {
            "location" : {
               "lat" : -33.86879,"lng" : 151.194217
            }
         },"icon" : "http://maps.gstatic.com/mapfiles/place_api/icons/restaurant-71.png","id" : "21a0b251c9b8392186142c798263e289fe45b4aa","name" : "Rhythmboat Cruises","opening_hours" : {
            "open_now" : false,"weekday_text" : []
         },"photos" : [
            {
               "height" : 426,"html_attributions" : [
                  "Rhythmboat Cruises"
               ],"photo_reference" : "CmRdAAAA-YL_I_Gk02blOX6S0nKHry8PFu9pDyp3Y9AnqISsa3Eq8mkbdD5mXuu1Fax60s0nSy3iiX-h5j-ztyLHcc1-782MsLQsgLLa4t3ZgDmCMll-a8ABapZGnZwDKByk67LFEhBgedv_u_eYFSEO9ay8jxJjGhTUHKPJ4G82vBJqSNliuv7UlAtclw","width" : 640
            }
         ],"place_id" : "ChIJyWEHuEmuEmsRm9hTkapTCrk","reference" : "CnRmAAAAvQlMKw-XtxEY4vWFCvudF7CEMQGI5ycNbfVgGl9rAF75fdiPOiLJw1k9NL2v8ZIJsOJuRS3Lm9Dw1vga4ajycAs7PlxN1MVnnYT9la0pBvEvSQNlyvszKANS1R4P7Mvk_jhqswMggqCUtwJ13LN2hRIQOiAkLTWUi3DOjVVOw7J5IRoUb_cJyJaJNqKdmkDM2f0OjQjh9F0","scope" : "GOOGLE","types" : [ "restaurant","food","point_of_interest","establishment" ],"vicinity" : "Pyrmont Bay Wharf (Near Australia Maritime Museum),Pyrmont,NSW 2009"
      },{
         "geometry" : {
            "location" : {
               "lat" : -33.867591,"lng" : 151.201196
            }
         },"id" : "a97f9fb468bcd26b68a23072a55af82d4b325e0d","name" : "Australian Cruise Group","photos" : [
            {
               "height" : 1331,"html_attributions" : [
                  "Australian Cruise Group"
               ],"photo_reference" : "CmRdAAAAtEoj29FJcNBccrsu6bHt0xgwVGhYlciCY1fe6gTr_d5_KkeP3LITnOwnpNRJWnX39B04-aIBOKXKJH6ltx948T5vWIYBoah1yZDXsWngWZ5kMsK7xyCB5P_q_xBIBxxUEhAYWeB4PiOm_Jy093fB-j0iGhSYmIs9xB2aa6u-RH8V8lZEk-Q5ig","width" : 2000
            }
         ],"place_id" : "ChIJrTLr-GyuEmsRBfy61i59si0","reference" : "CnRqAAAAFbukrZvRNsc05TreHUCrPEya5NcN9v0fFLLaK-D1fSyxFTuQlUDhDstU3qwXKw_fADX4W6guUkexax1nufgiYIuGCKoZPEnup1r-LhGGNz9dn1uf9Of5iOtZ1XgCeDjJaYvGbSB3C0pAXL8r9kOsmhIQbx2Sia2DAWTjtSZwuh5aehoUhM6upqBCDLhGruZAGGsCOwAiIq8","types" : [
            "restaurant","travel_agency","establishment"
         ],"vicinity" : "32 The Promenade,King Street Wharf 5,Sydney"
      },{
         "geometry" : {
            "location" : {
               "lat" : -33.870943,"lng" : 151.190311
            }
         },"icon" : "http://maps.gstatic.com/mapfiles/place_api/icons/bar-71.png","id" : "e644f7f34cf875b9919c6548f1b721947362850a","name" : "Lunch Cruise with Jazz on Sydney Harbour","photos" : [
            {
               "height" : 292,"html_attributions" : [
                  "From a Google User"
               ],"photo_reference" : "CmRdAAAAR4bqFTKYWdBwZwdBdON_JRD7V_joTwwIPwRUpZIZWkSSd8GQ3P2O-_aQbUJdL2RhoAyzCUIF0f--DI4oXFneTpj5zZfFq-iFiT7i_x0tjnDveIY8tJv-6o0uWSSjYqabEhCKqQWZqrKAoddjDcc64N48GhQZ2T1_ntPzNKCooHpZzlYQ7AxFOA","width" : 438
            }
         ],"place_id" : "ChIJLfySpTOuEmsRPCRKrzl8ZEY","reference" : "CoQBewAAAFd2fO_YWGTiT4RzXWb5tsOuOt7YyV_ScQOwm0tqJSrAyACCczeOzV-P_mgZLro1oKP_34Nt0nVC_1OEKAQUcd7cUm7xmAMSX-EkbSWiD0kOWGgGgKuDRtb0t_8qsxBGU_izugWCyK7SRWezTxELYNdkS0OEiSWPnvhxvXuQktBBEhAAtEe7fagW2kUR14T1QpVsGhQBO7YpIyYSPvo4zUJuL_bX30nJZw","types" : [ "bar","restaurant","vicinity" : "37 Bank St,Pyrmont"
      }
   ],"status" : "OK"
}

以下示例返回英国伦敦附近的医院列表.

https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=51.503186,-0.126446&radius=5000&types=hospital&key=API_KEY

有关详细信息,请参阅here.

使用Android中的Google Maps API从用户位置获取附近地点的结果

解决方法

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