如何使用SimpleCursorAdapter从数据库填充列表视图

Question

I get some data from the database and try to fill them in a listview. i have checked through cursor.count() there is data exist but the listview show anything :/

I use a simpleCursorAdapter:

    rubDb.open();   
    cur = rubDb.getRubParent();     
    startManagingCursor(cur);
    Log.d("cursor length",Integer.toString(cur.getCount()));
    String[] from = new String[] { RubriqueDbAdapter.RUB_NOM, RubriqueDbAdapter.RUB_VISUEL };       
    int[] to = new int[] {R.id.title, R.id.icon};
    listAdapter = new SimpleCursorAdapter(this,  R.layout.itemgauche, cur, from, to);
    listeGauche.setAdapter(listAdapter);


public Cursor getRubParent() {              
    Cursor cursorResults = mDb.rawQuery("SELECT * FROM " + TABLE_RUBRIQUE + " WHERE rub_id_parent = 0 ORDER BY rub_ordre ASC", null);       
    return cursorResults;
}

how can I get a picture from the sdcard and put it on the ImageView in the listview ?

Thanks for your help !

Answer 1

First, you should be using a CursorAdapter , perhaps a SimpleCursorAdapter , instead of manually copying all of the data into objects in an array, just to use ArrayAdapter .

Second, if your list will be anything other than a simple piece of text, you must teach the adapter how to do whatever else you want. With SimpleCursorAdapter , you could associate a ViewBinder with it, or subclass SimpleCursorAdapter and override setViewImage() , or subclass SimpleCursorAdapter and override bindView() .