android TextView.setText Nullpointer Exception(android beginner)

Question

 @Override
public View getView(final int position, View convertView, ViewGroup parent) {
    // TODO Auto-generated method stub

    if(convertView == null){
        LayoutInflater inflater=(LayoutInflater)c.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        convertView=inflater.inflate(R.layout.program_list,null);
    }
    // GET VIEWS
    TextView nameTxt=(TextView) convertView.findViewById(R.id.nametxt);
    TextView landTxt=(TextView) convertView.findViewById(R.id.landtxt);
    TextView groesseTxt=(TextView) convertView.findViewById(R.id.groessetxt);
    TextView gewichtTxt=(TextView) convertView.findViewById(R.id.gewichttxt);
    ImageView img =(ImageView) convertView.findViewById(R.id.imageView1);

    //SET DATA
    nameTxt.setText(names[position]);
    landTxt.setText(land[position]);
    groesseTxt.setText(groesse[position]);
    gewichtTxt.setText(gewicht[position]);
    img.setImageResource(images[position]);

    return convertView;
}

I can't start my program of the NullPointerException

I want to create a custom listview, with a onClick to a new Activity...

one of these `nameTxt` `landTxt` `groesseTxt` `gewichTxt` is null — Bhargav, Mar 04 '16 at 16:54
thank you guys, i have solved the problem, the program_list was not complete. But now i have another problem. How can I declare a new Activity in Manifast.xml. So i can get to another Activity with an onClick — J.Li, Mar 06 '16 at 11:17

score 0 · Answer 1 · answered Mar 04 '16 at 16:58

0

check your layout (R.layout.program_list) if contain the id nametxt, landtxt, groessetxt and gewichttxt probably this is the error, someone is missing in the line 98.

if all exist, the other thing is some array contain null values.

answered Mar 04 '16 at 16:58

Santiago Medina Chaverra

376
3
6

score 0 · Accepted Answer · answered Mar 04 '16 at 17:08

debug this code:

TextView nameTxt=(TextView) convertView.findViewById(R.id.nametxt);
TextView landTxt=(TextView) convertView.findViewById(R.id.landtxt);
TextView groesseTxt=(TextView) convertView.findViewById(R.id.groessetxt);
TextView gewichtTxt=(TextView) convertView.findViewById(R.id.gewichttxt);
ImageView img =(ImageView) convertView.findViewById(R.id.imageView1);

Maybe they views (nametxt,landtxt,groessetxt,gewichttxt,imageView1) dont exist in program_list layout.

score 0 · Answer 3 · answered Mar 04 '16 at 19:09

0

One or more of your textviews are not belongs to your layout. Make sure you have provided same ids in your layout file.

answered Mar 04 '16 at 19:09

Brijesh Chopda

195
2
11

android TextView.setText Nullpointer Exception(android beginner)

3 Answers3