Hey guys, I have a few questions concerning listView and cursors.
First, I know theres a method called bindView(), and I was wondering
if this implies that you can tie extra data to each list item. My
objective is to putExtras() to another activity after a contacts name
is clicked on. I figured that it would be very easy to accomplish if
the data was already in the listview object (or something to that
extent). I am not sure how to go about doing something like this!
Also, concerning cursors and retrieving data. I have code that
actually works to get the contacts of the phone, but I am not sure
exactly what it does, and I do not understand the parameters that
query on a ContentResolver are (ie Projection and such). Anyone have a
nice explanation on how this works? Thanks for any help!
public class MainPage extends ListActivity {
private ListAdapter adapter;
private Cursor c;
private ArrayList<String> names;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
ContentResolver cr = getContentResolver();
c = cr.query(ContactsContract.Contacts.CONTENT_URI, null,
null, null,null);
names = new ArrayList<String>();
while(c.moveToNext()){
String name =
c.getString(c.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
String number =
c.getString(c.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));
if(number.equals("0")) continue;
names.add(name);
}
adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, names);
setListAdapter(adapter);
getListView().setTextFilterEnabled(true);
}
@Override
public void onListItemClick(ListView l, View v, int position, long id)
{
super.onListItemClick(l, v, position, id);
Intent newIntent = new Intent(Intent.ACTION_MAIN);
newIntent.setClass(this, Summary.class);
newIntent.putExtra("com.grey.gui.MainPage", "banana");
startActivity(newIntent);
}
}
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