Я пытаюсь использовать класс AsyncTask на Android, но у меня есть проблема.

Вот мой код:

 public void CheckIfUserIsLogedIn ()
{
    int userPresence = localDatabase.CheckUserPresence();
    if (userPresence == 0) 
    {
        setContentView(R.layout.main);
        new checkCountryAsync().execute();
    }
    else
    {
        setContentView(R.layout.userlogedon);
    }
}  

class checkCountryAsync extends AsyncTask<String, String, String> {

    @Override
    protected void onPreExecute() {
        super.onPreExecute(); 
    }
    @Override
    protected String doInBackground(String... aurl) {
        int countryPresence = localDatabase.CheckCountryPresence();
        if (countryPresence == 0) 
        {
            CountryTable country = new CountryTable() ;
            country.EnterCountry();
        }
        return null;
    }
}

Я не знаю, где я делаю что-то не так. Метод CheckCountryPresence () из класса LocalDatabase только делает запрос и возвращает результат.

Спасибо.

Редактировать: вот logCat:

02-20 08:41:25.804: W/dalvikvm(26458): threadid=10: thread exiting with uncaught exception (group=0x4001d5a0)
02-20 08:41:25.834: E/AndroidRuntime(26458): FATAL EXCEPTION: AsyncTask #1
02-20 08:41:25.834: E/AndroidRuntime(26458): java.lang.RuntimeException: An error occured while executing doInBackground()
02-20 08:41:25.834: E/AndroidRuntime(26458):    at android.os.AsyncTask$3.done(AsyncTask.java:200)
02-20 08:41:25.834: E/AndroidRuntime(26458):    at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:274)
02-20 08:41:25.834: E/AndroidRuntime(26458):    at java.util.concurrent.FutureTask.setException(FutureTask.java:125)
02-20 08:41:25.834: E/AndroidRuntime(26458):    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:308)
02-20 08:41:25.834: E/AndroidRuntime(26458):    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
02-20 08:41:25.834: E/AndroidRuntime(26458):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088)
02-20 08:41:25.834: E/AndroidRuntime(26458):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581)
02-20 08:41:25.834: E/AndroidRuntime(26458):    at java.lang.Thread.run(Thread.java:1027)
02-20 08:41:25.834: E/AndroidRuntime(26458): Caused by: java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
02-20 08:41:25.834: E/AndroidRuntime(26458):    at android.os.Handler.<init>(Handler.java:121)
02-20 08:41:25.834: E/AndroidRuntime(26458):    at android.app.Activity.<init>(Activity.java:717)
02-20 08:41:25.834: E/AndroidRuntime(26458):    at milos.mdpi.CountryTable.<init>(CountryTable.java:5)
02-20 08:41:25.834: E/AndroidRuntime(26458):    at milos.mdpi.MDPIActivity$checkCountryAsync.doInBackground(MDPIActivity.java:367)
02-20 08:41:25.834: E/AndroidRuntime(26458):    at milos.mdpi.MDPIActivity$checkCountryAsync.doInBackground(MDPIActivity.java:1)
02-20 08:41:25.834: E/AndroidRuntime(26458):    at android.os.AsyncTask$2.call(AsyncTask.java:185)
02-20 08:41:25.834: E/AndroidRuntime(26458):    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:306)
02-20 08:41:25.834: E/AndroidRuntime(26458):    ... 4 more