Android: listview crashes

Question

I\'m using android listview and its working perfectly fine. my implementation as below

ListView listview = (ListView)findViewById(R.id.list);
setListAdapter(new          


        

Answer 1

Well from you code where you are using

setListAdapter(adapter);

indicates that you are using ListActivity, and while using ListActivity you get your list as follow:

listView = this.getListView();

or you can use

listView = this.findViewById(android.R.id.list);

and you are using

listView = this.findViewById(R.id.list);

which is wrong in case of ListActivity, and ListView cannot be found and results in NullPointerException.

Answer 2

Try like this.

Public class ABCD implements OnItemClickListener{
          ListView listview;//class varible

           listview = (ListView)findViewById(R.id.list);
           setListAdapter(new ArrayAdapter<String>(MyIncidentActivity.this,
           R.layout.row_incident, R.id.label_incident, db_results));
           listview.setOnItemClickListener(this);

        @Override
    public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
        // TODO Auto-generated method stub

    }

}