Hi!

I have a ListView with a custom Adapter that extends ArrayAdapter. It's a ArrayAdapter of Type Artist.

Artist is a very small class that has a name and an id. The Artist Class has toString() overridden to return just the name.

I have an EditText. The EditText has an TextChangeListener where i call .getFilter().filter(chars, callback) on my adapter.

In the Filter.Filterlistener().onComplete() callback i print the count and it looks really good. As i type the count decreases. So it seams everything works as advertised, but the List stays the same. I tried to call artistAdapter.notifyDataSetChanged() to force the list to redraw, but nothing happens. [see 2.)]

I am tinkering around for days now! I am desperate.. Hopefully someone can have a look on my code and tell me what i am doing wrong!

Thanks!

Here is what i have done:

1.) Defined a ListView and an EditText like this:

<EditText xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/list_search_text"
    android:layout_width="fill_parent"
    android:layout_height="35dip"
    android:layout_below="@id/header">
</EditText>       
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/list_search"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
</ListView>

2.) Setup my ListView in the Activities onCreate():

private ListView listView = null;
private ArtistAdapter artistAdapter = null;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.search_artists);

    artistAdapter = new ArtistAdapter(this, R.layout.row, list); // 'list' is an ArrayList<Artist>

    listView = (ListView) findViewById(R.id.list_search);
    listView.setAdapter(artistAdapter);
    listView.setFastScrollEnabled(true);
    listView.setTextFilterEnabled(true);

    listView.setOnItemClickListener(new OnItemClickListener() {
        public void onItemClick(AdapterView<?> av, View v, int position, long id) {
            // do something
        }
    });

    EditText txtSearch = (EditText) findViewById(R.id.list_search_text);
    txtSearch.addTextChangedListener(new TextWatcher() {
        public void afterTextChanged(Editable arg0) { }

        public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) { }

        public void onTextChanged(CharSequence chars, int start, int before, int count) {
            artistAdapter.getFilter().filter(chars, new Filter.FilterListener() {
                public void onFilterComplete(int count) {
                    Log.d(Config.LOG_TAG, "filter complete! count: " + count);
                    artistAdapter.notifyDataSetChanged();
                }
            });
        }
    });
}

3.) This is my ArtistAdapter in short. I added an remove() and add() method:

public class ArtistAdapter extends ArrayAdapter<Artist> implements SectionIndexer {
    private List<Artist> items;

    /* other stuff like overridden getView, getPositionForSection, getSectionForPosition and so on */

    @Override
    public void remove(Artist object) {
        super.remove(object);
        items.remove(object);
    }

    @Override
    public void add(Artist object) {
        super.add(object);
        items.add(object);
    }
}    

4.) My artist has also the toString() overridden:

public class Artist implements Comparable<Artist> {
    public String   uid;
    public String   name;

    public Artist(String id, String name) {
        this.uid = id;
        this.name = name;
    }

    public int compareTo(Artist another) {
        return this.name.compareToIgnoreCase(another.name);
    }

    @Override
    public String toString() {
        return this.name;
    }
}