android 如何遍历Cursor

private void showItems() {

SQLiteDatabase db = mOpenHelper.getReadableDatabase();

String col[] = { TITLE, BODY };

Cursor cur = db.query(TABLE_NAME, col, null, null, null, null, null);

int title = cur.getColumnIndex(TITLE);

int body = cur.getColumnIndex(BODY);

for(cur.moveToFirst();!cur.isAfterLast();cur.moveToNext())

{

String name = cur.getString(title);

String phoneNumber = cur.getString(body);

sb.append(name+" "+phoneNumber+"\n");

Log.i("title", name);

Log.i("body",phoneNumber);

}

setNotification();

Integer num = cur.getCount();

setTitle(Integer.toString(num) + " 条记录");

}

public void setNotification()

{

NotificationManager nmanager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);

Notification notification = new Notification(R.drawable.icon, "数据库查询结果", System.currentTimeMillis());

PendingIntent pi = PendingIntent.getActivity(this, 0, new Intent(this,ActivityMain.class), 0);

notification.setLatestEventInfo(this, "查询结果" , sb.toString(), pi);

nmanager.notify(1, notification);

}