Question

my code is a ListActvity to Load data from dabase to listview

public class ViewList extends ListActivity {
private ListViewAdapter lAdapter;   

@Override
public void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    lAdapter = new ListViewAdapter();
    DBAdapter db = new DBAdapter(this);
    db.open();      
    Cursor cursor = db.fetchAllDeliveryItem();
    lAdapter.setCursor(cursor);
    cursor.moveToFirst();
    //Toast.makeText(getApplicationContext(), cursor.getString(1), Toast.LENGTH_SHORT).show();
    setListAdapter(lAdapter);

}
private class ListViewAdapter extends BaseAdapter{
    //String data [] = {"_id","itemname","pickupaddress","deliveryaddress","delivered"};
    private LayoutInflater mInflater;
    //private ArrayList mData = new ArrayList();
    private Cursor cursor;  
     public ListViewAdapter() {
            mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        }

    public void setCursor(Cursor cursor)
    {
        this.cursor = cursor;
    }

    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder = null;
        Log.i("GetView RUN","Runing runing");
        if (convertView == null) 
        {
            convertView = mInflater.inflate(R.layout.receiverow, null);
            holder = new ViewHolder();
            holder.textView = (TextView)convertView.findViewById(R.id.label);
            holder.checkbox = (CheckBox)convertView.findViewById(R.id.check);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder)convertView.getTag();
        }           
       // String getPosition[] = (String) mData.get(position);
        //holder.textView.setText(mData.get(position));    
       //holder.textView.setText(cursor.getString(1));
        holder.textView.setText("Test");
       if(cursor.getInt(4)!=0)
       holder.checkbox.setChecked(true);
       else
           holder.checkbox.setChecked(false);
        return convertView;
    }

}
public static class ViewHolder {
    public TextView textView;
    public CheckBox checkbox;
}

}

I see in Log cat the method public View getView(int position, View convertView, ViewGroup parent) doen’t invoked and listviewitems doesn’t appear on listview
how to fix it?
Thank you for support.

Answer 1

Don’t roll your own adapter when you can use SimpleCursorAdapter:

@Override
public void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);

    DBAdapter db = new DBAdapter(this);
    db.open();
    Cursor cursor = db.fetchAllDeliveryItem();

    // *** replace these strings with the actual *column names* of your query!
    String[] from = { "name_label_column", "name_check_column" };
    int[] to = { R.id.label, R.id.check };

    setListAdapter(new SimpleCursorAdapter(this, R.layout.receiverow, cursor, from, to));
}