如何从给定的纬度和经度中查找位置名称？

Posted 2023-04-14

【中文标题】如何从给定的纬度和经度中查找位置名称？

【英文标题】：How to find location name from given lattitude & longitude?

【发布时间】：2018-01-08 00:45:00

【问题描述】：

我正在尝试获取位置名称或地址。我已经通过 Google Fused Location API 成功获取了经纬度。

现在我想通过使用纬度和经度来获取位置地址（例如：城市名称、路号或特定地址）。

为此，我使用了 Google Geocoder，它运行良好。但在某些设备中，位置地址返回空值。

我在网上搜索了这个问题的解决方案，发现一些设备制造商在他们的设备中没有包含这个功能。这就是为什么那些设备无法通过反向地理编码方法找到地址的原因。 Here is the link of that information

那么有没有其他方法可以在不使用 Geoconding 的情况下将地址名称作为字符串查找？

这是我通过地理编码获取地址的代码

public static void getAddress(Context context, double LATITUDE, double LONGITUDE) 


    try 
        Geocoder geocoder = new Geocoder(context, Locale.getDefault());
        List<Address> addresses = geocoder.getFromLocation(LATITUDE, LONGITUDE, 1);
        if (addresses != null && addresses.size() > 0) 



            String address = addresses.get(0).getAddressLine(0); // If any additional address line present than only, check with max available address lines by getMaxAddressLineIndex()
            String city = addresses.get(0).getLocality();
            String state = addresses.get(0).getAdminArea();
            String country = addresses.get(0).getCountryName();
            String postalCode = addresses.get(0).getPostalCode();
            String knownName = addresses.get(0).getFeatureName(); // Only if available else return NULL

            Log.d(TAG, "getAddress:  address" + address);
            Log.d(TAG, "getAddress:  city" + city);
            Log.d(TAG, "getAddress:  state" + state);
            Log.d(TAG, "getAddress:  postalCode" + postalCode);
            Log.d(TAG, "getAddress:  knownName" + knownName);

        
     catch (IOException e) 
        e.printStackTrace();
    
    return;

【参考方案1】：

使用它对我有用

public class LocationAddress 
    private static final String TAG = "LocationAddress";

    private static String area = null;

    public static void getAddressFromLocation(final double latitude, final double longitude,
                                              final Context context, final Handler handler) 
        Thread thread = new Thread() 
            @Override
            public void run() 
                Geocoder geocoder = new Geocoder(context, Locale.getDefault());
                String result = null;
                try 
                    List<Address> addressList = geocoder.getFromLocation(
                            latitude, longitude, 1);
                    if (addressList != null && addressList.size() > 0) 
                        Address address = addressList.get(0);


                        StringBuilder sb = new StringBuilder();
                        for (int i = 0; i < address.getMaxAddressLineIndex(); i++) 
                            sb.append(address.getAddressLine(i)).append("\n");
                        

                        area = address.getSubLocality();

                        sb.append(address.getLocality()).append("\n");
                        sb.append(address.getPostalCode()).append("\n");
                        sb.append(address.getCountryName());
                        result = sb.toString();
                    
                 catch (IOException e) 
                    Log.e(TAG, "Unable connect to Geocoder", e);
                 finally 
                    Message message = Message.obtain();
                    message.setTarget(handler);
                    if (result != null) 
                        message.what = 1;
                        Bundle bundle = new Bundle();
                        /*result = "Latitude: " + latitude + " Longitude: " + longitude +
                                "\n\nAddress:\n" + result;*/
                        bundle.putString("address", result);
                        bundle.putString("area",area);
                        message.setData(bundle);
                     else 
                        message.what = 1;
                        Bundle bundle = new Bundle();
                       /* result = "Latitude: " + latitude + " Longitude: " + longitude +
                                "\n Unable to get address for this lat-long.";*/
                        bundle.putString("address", result);
                        bundle.putString("area",area);
                        message.setData(bundle);
                    
                    message.sendToTarget();
                
            
        ;
        thread.start();
    

要在您的 Activity 中调用它

 LocationAddress locationAddress = new LocationAddress();
                locationAddress.getAddressFromLocation(latitude,longitude,
                        getApplicationContext(), new GeocoderHandler());

GeocoderHandler

private class GeocoderHandler extends Handler 
        @Override
        public void handleMessage(Message message) 
            String locationAddress  = null;
            String area = null;
            switch (message.what) 
                case 1:
                    Bundle bundle = message.getData();
                    locationAddress = bundle.getString("address");
                    area = bundle.getString("area");
                    break;
                default:
                    locationAddress = null;
            

            if(locationAddress != null)
            locationAddress=locationAddress.replaceAll("[\r\n]+", " ");

            Log.d("===========>>>",area);
        Log.d("===========>>>>",locationAddress);
        
    

【讨论】：

你的 GeocoderHandler 类在哪里？它给出了错误

我加了你可以查看

它在某些设备上运行，而在其他设备上崩溃。工作设备 - 支持地理编码的设备，崩溃设备 - 不支持地理编码的设备