android 听外发短信不起作用

我正在尝试收听传出的短信。我正在遵循已接受的答案here https://stackoverflow.com/questions/5808577/listen-to-outgoing-sms-or-sent-box但它不起作用。我不确定我哪里出错了。我对内容观察者一点也不熟悉，所以请原谅我的无知。

我想在服务中创建它，这样它就可以一直运行。这是我在该服务中的代码：

import android.app.Service;
import android.content.ContentResolver;
import android.content.Intent;
import android.database.ContentObserver;
import android.database.Cursor;
import android.net.Uri;
import android.os.Handler;
import android.os.IBinder;
import android.util.Log;

public class SmsOutgoingObserver extends Service {
    public SmsOutgoingObserver() {
    }
    /* this method handles a single incoming request */
    @Override
    public int onStartCommand(Intent intent, int flags, int id) {

        Log.d("OUTGOING", "RUNNING SERVICE");

        return START_STICKY; // stay running
    }
    @Override
    public IBinder onBind(Intent intent) {
        return null; // disable binding
    }

    public class SmsObserver extends ContentObserver {

        public SmsObserver(Handler handler) {
            super(handler);
        }

        @Override
        public void onChange(boolean selfChange) {
            super.onChange(selfChange);

            Uri uriSMSURI = Uri.parse("content://sms/out");
            Cursor cr = SmsOutgoingObserver.this.getContentResolver().query(uriSMSURI, null, null, null, null);

            cr.moveToNext();
            String address = cur.getString(cr.getColumnIndex("body"));

            Log.d("OUTGOING", address);

            cr.close();

            //Database.messageReceived(SmsOutgoingObserver.this, address);
        }
    }
}

我究竟做错了什么？

除了@CommonsWare 指出的我的愚蠢错误之外，我还错过了

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

    ContentResolver contentResolver = this.getContentResolver();
    contentResolver.registerContentObserver(Uri.parse("content://sms/out"),true, new SmsObserver(new Handler()));
}

另一个问题实际上是在这两行中

contentResolver.registerContentObserver(Uri.parse("content:&‌​#47;/sms/out‌​"),true, new SmsObserver(new Handler()));

and

Uri uriSMSURI = Uri.parse("content://sms/out");

我在哪里改变了content://sms/out to content://sms然后继续检查类型以确保我收到的更改实际上是传出消息。我还必须确保检查多个调用，如下所示：

if (cr.getInt(cr.getColumnIndex("type")) == 2) {
    if(id != cr.getInt(cr.getColumnIndex(cr.getColumnName(0)))) {
        id = cr.getInt(cr.getColumnIndex(cr.getColumnName(0)));

        String address = cr.getString(cr.getColumnIndex("address"));
        Database.messageSent(SmsOutgoingObserver.this, address);
            Log.d("OUTGOING", address);
        } else {
            Log.d("OUTGOING", "MESSAGE ALREADY LOGGED");
        }
     };
}

并简单定义private int id = 0;作为全局变量