Hello, I am going out of my mind for the last 2 days with an IllegalArgumentException error i receive in android code when trying to get a coordinates out of an address, or even reverse, get address out of longitude and latitude. this is the code, but i cannot see an error. is a standard code snippet that is easily found on a google search.

    public GeoPoint determineLatLngFromAddress(Context appContext,
   String strAddress) {

  Geocoder geocoder = new Geocoder(appContext,
    Locale.getDefault());
  GeoPoint g = null;

  try {
   System.out.println("str addres: " + strAddress);
   List<Address> addresses = geocoder.getFromLocationName(strAddress,
     5);
   if (addresses.size() > 0) {
    g = new GeoPoint((int) (addresses.get(0).getLatitude() * 1E6),
      (int) (addresses.get(0).getLongitude() * 1E6));
   }
  } catch (Exception e) {
   throw new IllegalArgumentException("locationName == null");
  }

  return g;
 }

These are the permissions from manifest.xml file:

    <uses-permission android:name="android.permission.INTERNET" />
 <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
 <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
 <uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />

I do have the Google Api key declared too: <uses-library android:name="com.google.android.maps" />

From the code snippet above, geo coder is not null, neither is the address or appContext, and i stumble here: geocoder.getFromLocationName(strAddress, 5);

I did a lot of google searching and found nothing that worked, and the most important info i found is this: ""The Geocoder class requires a backend service that is not included in the core android framework." Sooo, i am confuzed now. What do I have to call, import, add, use in code.... to make this work? I am using Google Api2.2, Api level 8. If somebody has found a solution for this, or a pointer for documentation, something that i didn't discover, please let us know. Thank you for your time.