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listview using customAdapter
public class customAdapter extends SimpleCursorAdapter {
Context c;
private ToDo ob;
public customAdapter(Context context, int layout, Cursor c, String[] from,
        int[] to) {
    super(context, layout, c, from, to);
    this.c = context;
    //lv.getListView();
    this.ob=(ToDo)context;

}


@Override
public View getView(int position, View convertView, ViewGroup parent) {

     long id=getItemId(position);//rowid

    View v = convertView;

    LayoutInflater vi =                   (LayoutInflater)c.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    v = vi.inflate(R.layout.simple, null);

    TextView tv1= (TextView)v.findViewById(R.id.Text1);

    TextView tv2= (TextView)v.findViewById(R.id.Text2);

    Button btn = (Button) v.findViewById(R.id.delete1);

    btn.setTag(id);

     System.out.println(btn.getTag());


    btn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Log.i("ToDo", "delete Row");
            long id = (Long) v.getTag();
    ob.DeleteRow( id);   //moment control reaches this line process terminates
            Log.i("ToDo", "delete after");
                    notifyDataSetChanged();
            Log.i("ToDo", "delete ");
        }

    });
    v.setLongClickable(true);
    return v;
}

}

private void fillData() {
    Cursor c = mDbHelper.fetchAll();
    startManagingCursor(c);
         String[] from = new String[] { ToDoDBAdapter.KEY_TITLE,
            ToDoDBAdapter.KEY_CREATED_ON };
     int[] to = new int[] {R.id.Text1, R.id.Text2 };

    // to display list and time


     Log.i("ToDo", "Created custom adapter");

       this.lv = getListView();
      this.todo = new customAdapter(this,R.layout.simple, c, from,to);
      lv. setAdapter(todo);


}