I'm trying to implement filtering of a ListView which is uses a custom object adapter, but I can't find any useful samples. The included code is very simplified, so no- keep in mind I can't use an regular ArrayAdapter. I have a EditText above the ListView, and when the user enters text in the EditText widget I would like to filter the ListView by the text written in the EditText. Any suggestions would be much appreciated!

Here is the snippet from the activity class:

public class management_objects extends Activity {
           private static List
           
             UserList;private EfficientAdapter adapter = null;private ListView objectListView = null;private EditText SearchText = null;private static class EfficientAdapter extends BaseAdapter implements Filterable{
               private LayoutInflater mInflater;       public EfficientAdapter(Context context) {
                   mInflater = LayoutInflater.from(context);    }    public int getCount() {
                   return UserList.size();    }    public Object getItem(int position) {
                   return position;    }    public long getItemId(int position) {
                   return position;    }    public View getView(int position, View convertView, ViewGroup parent) {
                   ViewHolder holder;         if (convertView == null) {
                        convertView = mInflater.inflate(R.layout.imagelayout_2lines, null);            holder = new ViewHolder();            holder.text = (TextView) convertView.findViewById(R.id.managementObjectText);            holder.subtext = (TextView) convertView.findViewById(R.id.managementObjectSubText);            holder.icon = (ImageView) convertView.findViewById(R.id.managementObjectIcon);            convertView.setTag(holder);        }        else {
                       holder = (ViewHolder) convertView.getTag();        }        holder.text.setText(UserList.get(position).getFirstName());        holder.subtext.setText(UserList.get(position).getLastName());        holder.icon.setImageResource(R.drawable.user);        return convertView;    }    static class ViewHolder {
                    TextView text;        TextView subtext;        ImageView icon;    }    @Override    public Filter getFilter() {
                   return null;    }}@Overridepublic void onCreate(Bundle savedInstanceState) {
               super.onCreate(savedInstanceState);    setContentView(R.layout.adobjectlist);    Bundle extras = getIntent().getExtras();    SearchText = (EditText) findViewById(R.id.SearchBox);        SearchText.addTextChangedListener(filterTextWatcher);    objectListView = (ListView) findViewById(R.id.ObjectList);    objectListView.setOnItemClickListener(Item_Click);    adapter = new EfficientAdapter(this);    ComputerName = extras.getString("COMPUTER_NAME");    //Get User list from webservice    ShowUsers();}
           

Here is The User class:

public class User {
             private int UserId;  private String FirstName;  private String LastName;    public int getUserId() {
                   return UserId;    }    public void setUserId(int UserId) {
                   this.UserId = UserId;    }    public String getFirstName() {
                   return FirstName;    }    public void setFirstName(String FirstName) {
                   this.FirstName = FirstName;    }    public String getLastName() {
                   return LastName;    }    public void setLastName(String LastName) {
                   this.LastName = LastName;    }}