Thread: Some help with looper

Hi all,
I am creating an Android App and i got stack when i realised i had to use Looper(something i havent done before)
I want my application to work on the background (in a way the user doesnt realise) and when the time is right (under some conditions) to pop up a message, a toast for example.
so i have this:

protected void onCreate(Bundle savedInstanceState) {		
		  httpclient = new DefaultHttpClient();
		     httppost = new HttpPost(addrs);		   
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
	try {
//Do my stuff
		time=new getTime().execute().get();
	DeleteOld(readTickets());
 
 
	//start a new thread to communicate with the server
new Thread(new Runnable() {
	    public void run() {
	    	try {Looper.prepare();
	    		while(true){	    			
	    			long sleepTime=100000;//millisecond (1000ms=1second)
	    			Thread.sleep(sleepTime);
	    			refresh();
                        }//while
			} catch (InterruptedException e){
                           //ToDo
			}	     
	    }
	  }).start();
 
	} catch (InterruptedException | ExecutionException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}		
	}//onCreate
 
public void refresh(){		
       try {
    	   //Read Data from file
           CharSequence[] data=readTickets();
//for all lines from the file
       for (int i=0;i<data.length;i++){
        	if(condition)	   
	            	   {
	           		   Toast.makeText(getApplicationContext(), "comming", Toast.LENGTH_LONG).show();
	                   }
	            	   else{
	            		     Toast.makeText(getApplicationContext(), "else", Toast.LENGTH_LONG).show();
	            		    }
	 }//for
			} catch (UnknownHostException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} // connect to the server
	}

This gave me an error about looper. So after some reasearch i realised that i need to use that, but i have no idea how. With practice i learned that i need a Looper.prepare(), Looper.Loop() and Looper.myLooper().quitSafely().
But i dont know how to use them properly. I have tried some things, but i cant get it right, at the best, i managed to run the refresh function once, getting the pop up message, but then the programm crashed.

Could someone point me to the right direction?

Thanks, ilias

I didnt think of AsyncTask. Will give it a try.
At first i run the code as described above, and when executed, i got an error saying that

java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()

Thats why I start looking at looper.

I tried to implement it using AsyncTask, but again when it came acros the toast command, i got the same error.

--- Update ---

OK, figured it out.
I had to use the toast command on the onPostExecute() method.
now it seems to be working.

Thanks