Avant de Géocodage exemple de Code pour android?

Quelqu'un a développé un code pour la conversion d'une adresse à un lat/long en valeur.
Je suis de se confondre avec l'Geocoder.
Il serait d'une grande aide si je peux obtenir des exemples de code, je suis à l'aide de code ci-dessous. il donne toujours une erreur no address found. ne se bloque

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
myMap = (MapView) findViewById(R.id.simpleGM_map); //Get map from XML
btnSearch = (Button) findViewById(R.id.simpleGM_btn_search); //Get button from xml
adress = (EditText) findViewById(R.id.simpleGM_adress); //Get address from XML
gc = new Geocoder(this); //create new geocoder instance
btnSearch.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
pd = ProgressDialog.show(simpleGoogleMaps.this, "Working..", "Searching your address", true, false); //Show a progress dialog
//Thread thread = new Thread(simpleGoogleMaps.this); //then create a new thread
// thread.start(); //and start the thread. it will automatically call the standard run-function.
searchAdress = new Thread() {
public void run(){
String addressInput = adress.getText().toString(); //Get input text
try {
foundAdresses = gc.getFromLocationName(addressInput, 5); //Search addresses
Thread.sleep(1500);
} catch (Exception e) {
//@todo: Show error message
}
showAdressResults.sendEmptyMessage(0);                      
}
};
searchAdress.start();
}
});
}
private Handler showAdressResults = new Handler() {
@Override
public void handleMessage(Message msg) {
pd.dismiss();
if (foundAdresses.size() == 0) { //if no address found,
//display an error
Dialog locationError = new AlertDialog.Builder(
simpleGoogleMaps.this).setIcon(0).setTitle(
"Error").setPositiveButton(R.string.ok, null)
.setMessage(
"Sorry, your address doesn't exist.")
.create();
locationError.show();
} else { //else display address on map
for (int i = 0; i < foundAdresses.size(); ++i) {
//Save results as Longitude and Latitude
//@todo: if more than one result, then show a
//select-list
Address x = foundAdresses.get(i);
lat = x.getLatitude();
lon = x.getLongitude();
}
navigateToLocation((lat * 1000000), (lon * 1000000),myMap); //display the found address
}
}
};  
/**
* Navigates a given MapView to the specified Longitude and Latitude
* 
* @param latitude
* @param longitude
* @param mv
*/
public static void navigateToLocation(double latitude, double longitude, MapView mv) {
GeoPoint p = new GeoPoint((int) latitude, (int) longitude); //new
//GeoPoint
mv.displayZoomControls(true); //display Zoom (seems that it doesn't
//work yet)
MapController mc = mv.getController();
mc.animateTo(p); //move map to the given point
int zoomlevel = mv.getMaxZoomLevel(); //detect maximum zoom level
mc.setZoom(zoomlevel - 1); //zoom
mv.setSatellite(false); //display only "normal" mapview
}
}