getting null pointer exception?

Question

I am trying to have name of contacts in one array and their types in another array,but can\'t get through with null pointer exception.here is my code.I have pointed out the

Answer 1

You are getting null pointer because you are accessing wrong index.

try this:

s=new String[cur.getCount()];
int  i=1;
while (cur.moveToNext()) {    

                   String id = cur.getString(indexID);    
                   name[i-1] = cur.getString(indexName);  
                   phoneType[i-1] =  cur.getString(indexPhoneType);       


                  String temp="id="+id+"-name="+name[i-1]+"-phoneType="+phoneType[i-1];
                  s[i-1]=temp;
                  i++;
    }

and also lv=(ListView)findViewById(R.id.listview); instead of lv=(ListView)findViewById(android.R.id.list);

You should add a condition here:

    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);      
       testGetContacts();

if(s.length()>0)
{
    lv = (ListView)findViewById(R.id.listview);
    ArrayAdapter sa=new ArrayAdapter(getApplicationContext(), android.R.layout.simple_list_item_1,s);
    lv.setAdapter(sa);
}
else
{
   Toast.makeText(getApplicationContext(),"Nothing Found",Toast.LENGTH_SHORT).show();
}