Hi guys im trying to put a button on each row of a list but i get null
pointer exception, i'll show the java files below. The list view is in
a seperate xml file to the button because button is inside a relative
layout. Can anyone help?.
This class gets data from a database and puts it in array and displays
in a list view which works fine until i try to put a button in each
row.
Java:
package project.Maps;
public class SatMain extends Activity {
/** Called when the activity is first created. */
ArrayList<String> results = new ArrayList<String>();
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
dbAdapter db = new dbAdapter(this);
;
//---get all titles---
db.open();
db.InsertData();
Cursor c = db.getSat1();
if (c.moveToFirst())
{
do {
String pub = c.getString(c.getColumnIndex
(db.KEY_Artist));
String pub1 = c.getString(c.getColumnIndex
(db.KEY_Time));
results.add(pub + pub1 );
} while (c.moveToNext());
}
db.close();
ListView listProducts;
List<String> results = new ArrayList<String>();
Context cont = null;
customArray ca = new customArray(cont, R.layout.button,
results);
listProducts = (ListView)findViewById(R.id.list123);
listProducts.setAdapter(ca);
ca.notifyDataSetChanged();
}}
Code for my custom adapter.
Java:
package project.Maps;
import java.util.List;
public class customArray extends ArrayAdapter<String> {
int resource;
public customArray(Context cont, int _resource, List<String>
results) {
super (cont, _resource, results);
resource = _resource;
}
@Override
public View getView(int position, View convertView, ViewGroup
parent) {
RelativeLayout rl;
// String prod = getItem(position);
if (convertView == null) {
rl = new RelativeLayout(getContext());
LayoutInflater vi = (LayoutInflater)getContext
().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
vi.inflate(resource, rl, true);
} else {
rl = (RelativeLayout)convertView;
}
return rl;
}
}
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