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Thread: I got this error and I don't know how to resolve this

  1. #1
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    Default I got this error and I don't know how to resolve this

    I got this error:
    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.MediaController.setAnchorView(andro id.view.View)' on a null object reference

    This is my code

     
    public class SymptomArrayAdapter extends ArrayAdapter<Symptom> {
     
        private MediaController mc;
     
        public SymptomArrayAdapter(Context context, List<Symptom> objects) {
            super(context, -1, objects);
        }
     
        @NonNull
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
     
            LayoutInflater layoutInflater = (LayoutInflater)getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
     
            View listViewItem = layoutInflater.inflate(R.layout.symptomlistitem, parent, false);
            TextView txtSymptom = (TextView)listViewItem.findViewById(R.id.txtSymptom);
            final VideoView videoSymptom = (VideoView) listViewItem.findViewById(R.id.videoSymptom);
     
            Symptom symptom = this.getItem(position);
     
            txtSymptom.setText(symptom.getSymptom());
            videoSymptom.setVideoURI(Uri.parse("android.resource://com.example.speechrecogniser/" + (symptom.getVideo())));
            videoSymptom.setVisibility(View.VISIBLE);
            videoSymptom.setMediaController(mc);
            videoSymptom.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    videoSymptom.start();
                }
            });
            mc.setAnchorView(videoSymptom);
            return listViewItem;
        }
    }

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: I got this error and I don't know how to resolve this

    What variable has the null value? Where is that variable assigned a valid value?
    What statement threw the NullPointerException?
    If you don't understand my answer, don't ignore it, ask a question.

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