Get Location From Longtitude And Latitude returns null

Question

The Problem which was causing: Geocoding need a connection to Google Api's. On Genymotion I didn't had till I installed 'Gapps'.

The Solution: e.g Install Gapps on Genymotion

I wan't to get the Location informations from longtitude and latitude. In my other app this function works great but in my other projects it didn't working at all.

Do it requires a google json file for it? A key? A whatever ?

I didn't find a solution yet. I really don't know why it returns everytime null. I tried with several locations.

private String getLocationFromLongLati(String longi, String lati) throws IOException {
        if (ActivityCompat.checkSelfPermission(MainActivity.this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(MainActivity.this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this, new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION}, 1001);
        } else {
            Geocoder geocoder = new Geocoder(MainActivity.this, Locale.GERMAN);
            List<Address> nm = geocoder.getFromLocation(Double.valueOf(lati), Double.valueOf(longi), 1);
            if(nm != null && nm.size()>0) {
                return nm.get(0).getPostalCode() + ", " + nm.get(0).getLocality();
            }
        }
        return null;

    }

Answer 1

You can try this method to get the location details(name) by its LatLng. It works fine for me. Just change your class name from MainActivity to yours in Geocoder constructor.

private String getAddressFromLatLng(LatLng latLng) {
    Geocoder geocoder = new Geocoder(MainActivity.this);

    String address = "";
    try {
        address = geocoder
                .getFromLocation(latLng.latitude, latLng.longitude, 1)
                .get(0).getAddressLine(0);
    } catch (IOException e) {
    }
    return address;
}

You can use this method anywhere in the activity where you require the address of LatLng.

Hope this helps you.

Answer 2

Geocoder doesn't always return a value. You can try to send a request 3 times in a for loop. I should be able to return atleast once. If not then, their might be a connection issue or can be other issues like server dis not reply to your request. Try and see these threads:

Geocoder doesn't always return a value and geocoder.getFromLocationName returns only null

I used this much more reliable way to get the address every time:

JSONObject ret = getLocationInfo(); 
JSONObject location;
String location_string;
try {
     location = ret.getJSONArray("results").getJSONObject(0);
     location_string = location.getString("formatted_address");
     Log.d("test", "formattted address:" + location_string);
} catch (JSONException e1) {
     e1.printStackTrace();
}


public JSONObject getLocationInfo() {

    HttpGet httpGet = new HttpGet("http://maps.google.com/maps/api/geocode/json?latlng="+lat+","+lng+"&sensor=true");
    HttpClient client = new DefaultHttpClient();
    HttpResponse response;
    StringBuilder stringBuilder = new StringBuilder();

    try {
        response = client.execute(httpGet);
        HttpEntity entity = response.getEntity();
        InputStream stream = entity.getContent();
        int b;
        while ((b = stream.read()) != -1) {
            stringBuilder.append((char) b);
        }
    } catch (ClientProtocolException e) {
        } catch (IOException e) {
    }

    JSONObject jsonObject = new JSONObject();
    try {
        jsonObject = new JSONObject(stringBuilder.toString());
    } catch (JSONException e) {
        e.printStackTrace();
    }
    return jsonObject;
}

Answer 3

You can try !

public static Address getAddress(LatLng latLng) {
            if(latLng != null){
                Geocoder geocoder;
                List<Address> addresses;
                geocoder = new Geocoder(context, Locale.getDefault());

                try {
                    addresses = geocoder.getFromLocation(latLng.latitude, latLng.longitude, 1); // Here 1 represent max location result to returned, by documents it recommended 1 to 5
                    return addresses.get(0);
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return null;
        }



    public static String getInfoAddress(Address address) {
                if (address != null) {
                    StringBuilder sb = new StringBuilder();
                    for (int i = 0; i <= address.getMaxAddressLineIndex(); i++) {
                        sb.append(address.getAddressLine(i)).append(", ");
                    }
                    return sb.toString();
                }
                return StringUtils.EMPTY;
            }

Answer 4

Add this library in gradle file

implementation 'com.google.android.gms:play-services-location:11.8.0'

Add Permission in Manifest file

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

Here is the code

private FusedLocationProviderClient mFusedLocationClient;
private void getCurrentLatLong() {
    //get Current Location
    mFusedLocationClient = LocationServices.getFusedLocationProviderClient(mContext);
    if (ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        // TODO: Consider calling
        //    ActivityCompat#requestPermissions
        // here to request the missing permissions, and then overriding
        //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
        //                                          int[] grantResults)
        // to handle the case where the user grants the permission. See the documentation
        // for ActivityCompat#requestPermissions for more details.
        return;
    }


    mFusedLocationClient.getLastLocation().addOnSuccessListener(new OnSuccessListener<Location>() {
        @Override
        public void onSuccess(Location location) {
            if (location != null) {

                Log.e("location", location.getLatitude() + "----" + location.getLongitude() + "----" + location.getSpeed());
            } else
                Toast.makeText(mContext, "Get Current Location not found", Toast.LENGTH_SHORT).show();
        }
    });
}