我们如何使用谷歌融合定位服务获得我们Android设备的准确位置？

Question

我正在每15秒申请位置更新，但每次位置发生变化时，即使设备位于同一位置。

任何人都可以帮助我，让我知道确切的位置，至少最接近的位置，这样我就可以在旅行时计算距离，并在相同的地方长时间等待时间。

Answer 1

你可以检查位置的准确性。这定义了您接收的位置的准确度，基于您可以过滤位置http://developer.android.com/reference/android/location/Location.html#getAccuracy()

Answer 2

1 Create a layout file named layout_map having a fragment to render map 

<?xml version="1.0" encoding="utf-8"?> 
<!-- 
    <com.google.android.gms.maps.MapView 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:id="@+id/mapView" /> 
--> 
<!-- 
<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" > 

    <fragment 
     android:id="@+id/map" 
     android:name="com.google.android.gms.maps.MapFragment" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent"/> 

</RelativeLayout> 
--> 

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/frame" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" > 

    <fragment 
     android:id="@+id/map" 
     android:name="com.google.android.gms.maps.MapFragment" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" /> 

</FrameLayout> 

2. Generate the mapkey and add it to in the manifest file 

    <meta-data 
      android:name="com.google.android.maps.v2.API_KEY" 
      android:value="AIzaSyBYc4fMCweLC4w77_hRctOktAt2bqLmnyg" /> 
3. Added metatdata tag for googleplay service 

    <meta-data 
      android:name="com.google.android.gms.version" 
      android:value="@integer/google_play_services_version" /> 

4. Add the map,internet,corselocation permissions 

    <uses-permission android:name="com.smartdurg.fragment.map.permission.MAPS_RECEIVE" /> 
<uses-permission android:name="android.permission.INTERNET" /> 
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> 

5. Create an activity named as MapActivtivity 

package com.smartcity.bilaspur; 

import java.io.IOException; 
import java.util.List; 
import java.util.Locale; 

import android.app.Activity; 
import android.content.Context; 
import android.content.Intent; 
import android.location.Address; 
import android.location.Geocoder; 
import android.net.Uri; 
import android.os.Bundle; 
import android.util.Log; 
import android.widget.Toast; 
import com.google.android.gms.maps.model.LatLng; 
public class MapActivity extends Activity { 

    String latitude,longitude,address,city,country; 
    LatLng defaultLatLng; 
    Context context; 
    protected void onCreate(Bundle savedInstanceState) { 

     super.onCreate(savedInstanceState); 

     setContentView(R.layout.map_activity); 
      try { 
       context = this; 
     Bundle extras = getIntent().getExtras(); 
     if (extras != null) 
     { 
      latitude = extras.getString("lat"); 
      longitude = extras.getString("lng"); 
      Log.e("MAP", "latitude? "+latitude); 
      Log.e("MAP", "longitude?"+longitude); 
     } 
     defaultLatLng = new LatLng(Double.valueOf(latitude), Double.valueOf(longitude)); 

     Geocoder geocoder; 
      List<Address> addresses ; 
      geocoder = new Geocoder(this, Locale.getDefault()); 

      addresses = geocoder.getFromLocation(Double.valueOf(latitude), Double.valueOf(longitude), 1); 

      Log.v("addresses",">>>>>>>>>>>>>>>>"+addresses); 
      if (addresses.size()<=0) 
      { 
       Toast.makeText(this, "InValid Location",2).show(); 
       finish(); 
      } 
      else 
      { 
       address = addresses.get(0).getAddressLine(0); 
       city = addresses.get(0).getAddressLine(1); 
       country = addresses.get(0).getAddressLine(2); 
      String geoUri = "http://maps.google.com/maps?q=loc:" + latitude + "," + longitude + " (" + "GOT IT" + ")"; 

      Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(geoUri)); 
      context.startActivity(intent); 
      } 
     } 

      catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
    } 

} 

In this case I have found the latitude & longitude form the webservice, you can find a code to get exact location from below link also with current latitude & longitude. 
http://stackoverflow.com/questions/17519198/how-to-get-the-current-location-latitude-and-longitude-in-android