java.lang.NullPointerException: Attempt to invoke interface method 'java.lang.Object java.util.List.get(int)' on a null object reference

Question

geocoder = new Geocoder(MapsActivity.this);
                List<Address> addressList = null;

               try {
                    addressList = geocoder.getFromLocation(firstLocationLattiutde, firstLocationlongitude, 5);
                }
                catch (IOException e) {
                    e.printStackTrace();
                }

                Address obj = addressList.get(0);
                add = obj.getAddressLine(0);
                guardAddress.setText(add);

but sometime it give error like this

java.lang.NullPointerException: Attempt to invoke interface method 'java.lang.Object java.util.List.get(int)' on a null object reference at com.example.fahadaziz.securityapplication.Services.MyService.onLocationChanged

addressList is null, geocoder.getFromLocation(); is not returning data — Praveen, Dec 08 '17 at 07:11

score 1 · Answer 1 · edited Dec 08 '17 at 07:14

1

geocoder.getFromLocation() method is returning null. So before performing any operation on addresslist you must check for null.

if(addresslist != null)
{
    //go ahead
}

edited Dec 08 '17 at 07:14

AskNilesh

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answered Dec 08 '17 at 07:13

dpaksoni

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java.lang.NullPointerException: Attempt to invoke interface method 'java.lang.Object java.util.List.get(int)' on a null object reference

1 Answers1