Question

我正在开发一个在用户输入地址后使用纬度和经度的应用程序。我正在使用Geocoder从输入地址获取经度和纬度。但问题是从Geocoder返回的相关地址，但我只能阅读其中一个。以下是我正在使用的代码：

list=list(a='This place is awesome', b='I failed in the exam')
lapply(list, polarity)

在上述情况下，我能够获得自由，但无法获得经度。调试后我知道这个。现在当我交换它们像

        Geocoder geocoder = new Geocoder(this);
    List<Address> addresses;
    double[] cordinates = new double[2];
    try {
        addresses = geocoder.getFromLocationName(locName, 1);
        if (addresses.size() > 0) {
            cordinates[0] = addresses.get(0).getLatitude();
            cordinates[1] = addresses.get(0).getLongitude();//unable to get this one 


            return cordinates;
        }

    } catch (IOException e) {
        e.printStackTrace();
    }
        return null;
}

现在我得到经度而不是纬度。这有什么问题？

Answer 1

试试这个有效的代码：

AutoCompleteTextView acGooglePlaces = (AutoCompleteTextView) findViewById(R.id.ac_edit_my_event_places);

    acGooglePlaces.setAdapter(new GooglePlacesAutocompleteAdapter(GooglePlaces.this, R.layout.auto_complete_text_layout));
    acGooglePlaces.requestFocus();

    btnSearch.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

            try {
                List<Address> returnedaddresses = geoCoder.getFromLocationName(acGooglePlaces.getText().toString(),1);

                if(!returnedaddresses.isEmpty()){

                    String latForVol = String.valueOf(returnedaddresses.get(0).getLatitude());
                    String longForVol = String.valueOf(returnedaddresses.get(0).getLongitude());

                    Log.e("Lat", latForVol);
                    Log.e("Long", longForVol);
                    Log.e("Location", acGooglePlaces.getText().toString());

                }else {
                    Log.e("Check", "Please give the correct address");
                }

            } catch (IOException e) {
                e.printStackTrace();
            }

        }
    });

Answer 2

这很好用。由于您在遇到中断时使用断点调试代码 return cordinates;它去了 return null; 它只在调试时发生。它始终返回正确的值。您可以通过插入日志语句来检查返回的值。

 {
     .....
     double[] coordinates = getLongLat("Your address");
     Log.wtf(TAG,"Lat:"+coordinates[0]+" Long:"+coordinates[1]);// This will log the correct values
     .....
 }


 public double[]  getLongLat(String address){
    Geocoder geocoder = new Geocoder(this);
    List<Address> addresses;
    double[] cordinates = new double[2];

   try {
       addresses = geocoder.getFromLocationName(address, 1);
       if (addresses.size() > 0) {
          Address address1 = addresses.get(0);
          cordinates[0] = address1.getLatitude();
          cordinates[1]  = address1.getLongitude();
          return cordinates;
    }

    } catch (IOException e) {
        e.printStackTrace();
    }
       return null;
}

Answer 3

public static LatLng reverseGeocoding(Context context, String locationName){
    if(!Geocoder.isPresent()){
        Log.w("zebia", "Geocoder implementation not present !");
    }
    Geocoder geoCoder = new Geocoder(context, Locale.getDefault());

    try {
        List<Address> addresses = geoCoder.getFromLocationName(locationName, 1);



    } catch (IOException e) {
        Log.d(Geocoding.class.getName(), "not possible finding LatLng for Address : " + locationName);
    }

    if(addresses.size() > 0){
            Log.d("zebia", "reverse Geocoding : locationName " + locationName + "Latitude " + addresses.get(0).getLatitude() );
            return new LatLng(addresses.get(0).getLatitude(), addresses.get(0).getLongitude());
    }else{
            //use http api
    }
    return null;
}

无法从地址获得纬度和经度，我得到其中一个纬度或经度

3 个答案: