How to check and set network status in TextView every 2 seconds?

Question

I want to set network status in TextView, which I want to repetitively call method and set in background, so I used AsyncTask class with infinite loop

class setNetworkText extends AsyncTask
{

    @Override
    protected Object doInBackground(Object[] params) {
        for(;;)
        {
            if(isNetworkConnected()) //check internet connection and if found it return true
                setOnline();         // it set my TextView text to Online
            else
                setOffline();        // it set my TextView text to Offline

            Thread.sleep(2000);
        }

        return null;
    }
}

but it is not working, it stops my application.

Answer 1

new CountDownTimer(30000, 1000) {

     public void onTick(long millisUntilFinished) {
        //check something on time interval here 1 second  
     }

     public void onFinish() {
         //when your task done here 3 second is time to end 
     }
  }.start();

explanation
CountDownTimer(long millisInFuture, long countDownInterval)

millisInfuture will be how long you want to run the task and countDownInterval is the interval in your case it is 2 seconds