GeoCoder AsyncTask doesn't update TextView in background

Scenario:

So what I have done so far is Created an AsyncTask to handle my GeoCoder that updates every 3 min (for testing purposes). Then I set up a TimerTask that shows a toast message with the users current Address every 4 minutes. (TimerTasks not included in code)

So heres the problem:

When I am in my app, everything is fine, however when my app is running in the background, the Toast messages stay stuck at whatever address the app was last set at before I exited my app. I know for sure that the AsyncTask does run in the background (Checked LogCats) and it seems like everything is running in the background fine, I just cant display the current address on my Toast.

All thoughts and inputs will be appreciated!

Here is my code:

 public class statuspage extends MapActivity {
 
 LocationManager locationManager;
 MapView mapView;
 Criteria criteria;
 Location location;
 Geocoder gc;
 Address address;
 
 String bestProvider;
 String LOCATION_SERVICE = "location";
 String addressString = "Searching for Nearest Address";
 StringBuilder sb;
 
 private MapController mapController;
 private MyLocationOverlay myLocation;
 
 @Override
 public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.statuspage);
 
     // Get Mapping Controllers etc //
     mapView = (MapView) findViewById(R.id.mapView);
     mapController = mapView.getController();
     mapController.setZoom(17);
     mapView.setBuiltInZoomControls(true);
 
     // Add the MyLocationOverlay //
     myLocation = new MyLocationOverlay(this, mapView);
     mapView.getOverlays().add(myLocation);
     myLocation.enableCompass();
     myLocation.enableMyLocation();
 
     // Animates the map to GPS Position //
     myLocation.runOnFirstFix(new Runnable() {
         @Override
         public void run() {
             mapController.animateTo(myLocation.getMyLocation());
 
         }
     });
 }
 
 @Override
 protected boolean isRouteDisplayed() {
 
     // Location Manager Intiation
     locationManager = (LocationManager) statuspage.this
             .getSystemService(LOCATION_SERVICE);
     criteria = new Criteria();
 
     // More accurate, GPS fix.
     criteria.setAccuracy(Criteria.ACCURACY_FINE); // More accurate, GPS fix.
     bestProvider = locationManager.getBestProvider(criteria, true);
 
     location = locationManager.getLastKnownLocation(bestProvider);
     updateWithNewLocation(location);
 
     locationManager.requestLocationUpdates(bestProvider, 60000, 10,
             locationListener); // 1800000 = 30 Min
 
     return false;
 }
 
 class GeoCoder extends AsyncTask<Void, Void, Void> {
 
     String lat = "Acquiring";
     String lng = "Acquiring";
 
     @Override
     protected Void doInBackground(Void... params) {
         if (location != null) {
 
             /**
              * double latitude = myLocation.getMyLocation().getLatitudeE6();
              * double longitude =
              * myLocation.getMyLocation().getLongitudeE6();
              */
 
             double latitude = location.getLatitude();
             double longitude = location.getLongitude();
 
             lat = "" + latitude;
             lng = "" + longitude;
 
             // gc = new Geocoder(statuspage.this, Locale.getDefault());
             Geocoder gc = new Geocoder(getApplicationContext(),
                     Locale.getDefault());
             try {
 
                 List<Address> addresses = gc.getFromLocation(latitude,
                         longitude, 1);
 
                 sb = new StringBuilder();
                 if (addresses != null && addresses.size() > 0) {
                     address = addresses.get(0);
 
                     int noOfMaxAddressLine = address
                             .getMaxAddressLineIndex();
                     if (noOfMaxAddressLine > 0) {
                         for (int i = 0; i < address
                                 .getMaxAddressLineIndex(); i++) {
                             sb.append(address.getAddressLine(i)).append(
                                     "\n");
                         }
                         addressString = sb.toString();
 
                     }
                 }
             } catch (Exception e) {
 
                 addressString = "Sorry, we are trying to find information about this location";
             }
 
         }
         return null;
     }
 
 
     @Override
     protected void onPostExecute(Void result) {
         TextView scrollview = (TextView) findViewById(R.id.scrollview);
 
         // Latitude and Longitude TextView
         TextView etlongitude = (TextView) findViewById(R.id.etlongitude);
         TextView etlatitude = (TextView) findViewById(R.id.etlatitude);
 
         // TextView to display GeoCoder Address
         scrollview.setGravity(Gravity.CENTER);
         scrollview.setText("Your location:" + "\n"
                 + "(Accurate to 500 meters)" + "\n" + (addressString));
 
         Log.d("Address", (addressString));
 
         // Latitude and Longitude TextView Display Coordinates //
         etlongitude.setText(lng);
         etlatitude.setText(lat);
 
         // Log.d("GeoCoder", "In-Task");
 
         return;
     }
 

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