For posterity, I think this sums up the minimal code need for a Cursor
AutoCompleteTextView:
class a extends Activity
{
AutoCompleteTextView ATFood;
class myListAdapter extends CursorAdapter
{
public myListAdapter(Context context, Cursor c)
{
super(context, c);
}
@Override
public void bindView(View view, Context context, Cursor cursor)
{
int columnIndex = cursor.getColumnIndexOrThrow("Col1");
((TextView)
view).setText(cursor.getString(columnIndex));
}
@Override
public String convertToString(Cursor cursor)
{
int columnIndex = cursor.getColumnIndexOrThrow("Col1");
return cursor.getString(columnIndex);
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup
parent)
{
final LayoutInflater inflater =
LayoutInflater.from(context);
final TextView view = (TextView) inflater.inflate
(R.layout.search_row, parent, false);
int columnIndex = cursor.getColumnIndexOrThrow("Col1");
view.setText(cursor.getString(columnIndex));
return view;
}
@Override
public Cursor runQueryOnBackgroundThread(CharSequence
constraint)
{
if (constraint == null)
return myDatabase.searchByTokenReturnName(" ");
return
myDatabase.searchByTokenReturnName(constraint.toString
()); //returns a cursor with the search results
}
}
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.layout);
Cursor cursor = myDatabase.searchByToken(" "); //returns a
cursor
with the whole database in it
AT = (AutoCompleteTextView) findViewById(R.id.filterEditText);
myListAdapter list = new myListAdapter(this, cursor);
AT.setAdapter(list);
}
}
On Feb 26, 12:32 am, Will <sem...@gmail.com> wrote:
> Thank you for the quick reply. Sorry for my slow reply (Verizon
> problems).
>
> On Feb 24, 11:50 pm, Romain Guy <romain...@google.com> wrote:
>
> > Yes it's null. You have to specify
> > one:http://developer.android.com/reference/android/widget/CursorAdapter.h...)
>
> > The FilterQueryProvider is a mechanism to let you filter the cursor
> > without subclassing CursorAdapter. So either you extend CursorAdapter
> > and override runQueryOnBackgroundThread() *or* you supply a
> > FilterQueryProvider.
>
> > On Tue, Feb 24, 2009 at 8:47 PM, Will <sem...@gmail.com> wrote:
>
> > > I have anAutoCompleteTextViewthat really, really appears to be
> > > working. I type and the list pops down as text begins to match what I
> > > type, eventually the user can select what he wants and the appropriate
> > > value gets passed to the next activity. My adapter is an extended
> > > CursorAdapter, not an ArrayAdapter.
>
> > > My runQueryOnBackgroundThread(CharSequence constraint) takes the
> > > constraint and passes it to my own function which does a SQL search
> > > for the constraint.toString() and returns a Cursor with the
> > > resultset. If the user types in "dog" every row in the table with
> > > "dog" a certain column shows up in the dropdown box. This is exactly
> > > what I intend.
>
> > > The issue is that I cannot get a query from FilterQueryProvider(). In
> > > fact, calls to getFilterQueryProvider() return null in all cases that
> > > I have seen. However, the SDK entry on runQueryOnBackgroundThread
> > > states, "The query is provided by a FilterQueryProvider. If no
> > > provider is specified, the current cursor is not filtered and
> > > returned." The sample code I have seen appear to implement this too.
>
> > > Since my various calls to getFilterQueryProvider() return null I can
> > > only assume no provider is specified and return an ununfilterd cursor
> > > (7000+ rows), but my constraint plainly has good data in that should
> > > not be ignored. And getFilterQueryProvider() returns null in all
> > > cases I have tried.
>
> > > getFilter does return a Filter
> > > I do extend CursorAdapter and implement Filterable in my class
>
> > > Since I am new I suspect I'm missing something and my emulator will
> > > combust any minute. Am I missing something or is this a documentation
> > > error?
>
> > --
> > Romain Guy
> > Android framework engineer
> > romain...@android.com
>
> > Note: please don't send private questions to me, as I don't have time
> > to provide private support. All such questions should be posted on
> > public forums, where I and others can see and answer them
>
>
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