Android MatrixCursor

I am trying to get a basic matrix cursor running, but for some reason the list remains empty. Would appreciate if someone could spot what may be wrong with the code?

    String []columns = new String[] {"_id","Title","Desc"} ;
    MatrixCursor mc = new MatrixCursor(columns);
    startManagingCursor(mc);

    for(int i=0; i< 200;i++)
    {
        mc.addRow(new Object[]{i, "test"+i ,"..."});
    }

    ListView lv = (ListView)findViewById(R.id.alist);

    int [] r = new int[1];
    r[0] = R.id.atext;           // the id of the textview in test_list_item layout
    String [] s= new String[1];  
    s[0] = mc.getColumnName(1);  // the column to be used "Title"
    SimpleCursorAdapter adapter = new SimpleCursorAdapter(this,android.R.layout.test_list_item,mc,s,r);

    lv.setAdapter(adapter);

The reason the layout was not read was due to the incorrect layout being called:
SimpleCursorAdapter(this,android.R.layout.list_item,mc,s,r); Instead of: SimpleCursorAdapter(this,R.layout.my_list_item,mc,s,r);