服务运行时更改变量

Question

嗨，我正在从事android项目。我将用户ID从活动传递给notiservice。我的服务运行良好，但是当我关闭我的应用程序时，我的用户ID发生了变化。我尝试最终确定此变量，但只能在onStartCommand方法中进行初始化。 当我遇到final并初始化构造函数时，它可以工作，但是无法在onStartCommand上初始化为什么变量会更改？我该怎么办？

我写Toast来查看运行块上的用户ID。

我的代码

package com.example.asus.msql_park;


 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.app.Service;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.AsyncTask;
 import android.os.Handler;
 import android.os.IBinder;
 import android.service.notification.StatusBarNotification;
 import android.support.v4.app.NotificationCompat;
 import android.util.Log;
 import android.widget.Toast;
 import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.ResultSet;
 import java.sql.Statement;
 import java.util.logging.LogRecord;


 public class notiservice extends Service {

private final static String TAG = "notiservice";
private  String _plaka;

private Handler mHandler;
private int mInterval = 5000;
private String sikayet__id=".";
private String last_sikayet_id="";
private static boolean alert=false;
private String userid;






@Override
public void onCreate() {
    super.onCreate();
    new UpdateTask().execute();
    mHandler = new Handler();
    startRepeatingTask();
    Log.i(TAG, "Starting timer...");



}

@Override
public void onDestroy() {

    stopRepeatingTask();
    Log.i(TAG, "Timer cancelled");
    super.onDestroy();
}

Runnable mStatusChecker = new Runnable() {
    @Override
    public void run() {
        try {

            Toast.makeText(notiservice.this, userid, Toast.LENGTH_SHORT).show();
            new notiservice.UpdateTask().execute();

        } finally {
            // 100% guarantee that this always happens, even if
            // your update method throws an exception
            mHandler.postDelayed(mStatusChecker, mInterval);
        }
    }
};

void startRepeatingTask() {
    mStatusChecker.run();
}

void stopRepeatingTask() {
    mHandler.removeCallbacks(mStatusChecker);
}

@Override
public int onStartCommand(Intent intent, int flags, int startId) {

    if(intent != null)
    {
        userid=intent.getExtras().get("userid").toString();
        _plaka=intent.getExtras().get("plaka").toString();



    }


    return super.onStartCommand(intent, flags, startId);
}






@Override
public IBinder onBind(Intent arg0) {
    return null;
}




private void notification(String plaka){



    NotificationCompat.Builder builder=new NotificationCompat.Builder(this,"personal notification");
    builder.setSmallIcon(R.drawable.ic_announcement);
    builder.setContentTitle("Hatalı Park Yaptınız!");
    builder.setContentText(plaka);
    builder.setPriority(NotificationCompat.PRIORITY_DEFAULT);

    Uri alarmSound = Uri.parse("android.resource://com.example.asus.msql_park/raw/siren");
    builder.setSound(alarmSound);
    Intent intent = new Intent(this,bildirim.class);
    intent.putExtra("userid",userid);
    intent.putExtra("plaka",plaka);
    PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
            intent, PendingIntent.FLAG_UPDATE_CURRENT);


    builder.setContentIntent(contentIntent);
    NotificationManager mNotifyMgr =
            (NotificationManager) getSystemService(NOTIFICATION_SERVICE);


    boolean var=false;




    for(StatusBarNotification ntf : mNotifyMgr.getActiveNotifications()  )
    {
        if(ntf.getId()==  001 )
            var=true;


    }
    if(!var){



        if(last_sikayet_id.equals(sikayet__id)){
            if(!alert){
                mNotifyMgr.notify(001, builder.build());
                alert=true;

            }



        }

        if(!last_sikayet_id.equals(sikayet__id)){

            last_sikayet_id=sikayet__id;
            alert=false;

        }








    }




}




private class UpdateTask extends AsyncTask<String, String,String> {

    protected String doInBackground(String... urls) {

        try {

            String myDriver = "com.mysql.jdbc.Driver";
            String myUrl = "jdbc:mysql://******/u7404772_deneme?useUnicode=true&useLegacyDatetimeCode=false&serverTimezone=Turkey";
            Class.forName(myDriver);
            Connection conn = DriverManager.getConnection(myUrl, "******", "*********");

            Statement st = conn.createStatement();
            String query = "SELECT * FROM sikayetler";
            ResultSet rs = st.executeQuery(query);
            while (rs.next()){

                if (rs.getString("plaka").equals(  _plaka   )){

                    if(rs.getInt("durum") == 0){
                        publishProgress(rs.getString("plaka"),rs.getString("sikayet_id"));



                    }

                }
            }


        }

        catch (Exception e)
        {
            System.err.println("Got an exception!");
            System.err.println(e.getMessage());
        }




        return null;
    }
    @Override
    protected void onProgressUpdate(String... values) {
        int a=1;

        if(values != null) {
            for (String st : values) {
                if (a == 1)
                    notification(st);
                if (a == 2)
                    sikayet__id = st;

                a++;
            }
        }


    }


}





}