This is an asyncTask using the geocoder falling back to a HttpRequest using volley to find a location

gistfile1.java

/**
 * Task to lookup the LatLng of an address
 */
public class SearchForLocationTask extends AsyncTask<String, Void, LatLng> {
  private static final String TAG = SearchForLocationTask.class.getSimpleName();

	Context mContext;
	
    //Get static reference to requestQueue
	RequestQueue mRequestQueue = MyApplication.getInstance().getRequestQueue();
	
	String mAddress;
	
	SearchForLocationTaskEventListener mListener;
	
	public interface SearchForLocationTaskEventListener {
		public void onFinish(LatLng result);
	}
	
	public SearchForLocationTask(Context context, SearchForLocationTaskEventListener listener) {
		mContext = context;
		mListener = listener;
	}

	@Override
	protected LatLng doInBackground(String... params) {
		if(Log.isLoggable(TAG, Log.INFO))Log.i(TAG, "doInBackground");
		mAddress = params[0];
		LatLng returnedLocation = null;
		Geocoder geocoder = new Geocoder(mContext);
		List<Address> addressList = null;
		if(Log.isLoggable(TAG, Log.INFO))Log.i(TAG, "Using geocoder");
		try {
			addressList = geocoder.getFromLocationName(mAddress, 5);
		} catch (IOException e) {
			if(Log.isLoggable(TAG, Log.ERROR))Log.e(TAG, "Error geocoding address", e);
		}

		if(addressList.size() > 0) {
			returnedLocation = new LatLng(addressList.get(0).getLatitude(), addressList.get(0).getLongitude());
		}
		if(returnedLocation == null) {
			if(Log.isLoggable(TAG, Log.INFO))Log.i(TAG, "Using geocoder failed, try using google");
			RequestFuture<JSONObject> future = RequestFuture.newFuture();
			try {
				JsonRequest<JSONObject> addressRequest = new JsonRequest<JSONObject>(Method.GET,
						"http://maps.google.com/maps/api/geocode/json?address=" + URLEncoder.encode(mAddress, "utf-8") + "&ka&sensor=false",
						"",
						future,
						future) {

					@Override
					protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
						JSONObject jsonResponse = null;
						String jsonString = new String(response.data);
						if(!TextUtils.isEmpty(jsonString)) {
							try {
								jsonResponse = new JSONObject(jsonString);
							} catch(JSONException e) {}
						}

						return Response.success(jsonResponse, HttpHeaderParser.parseCacheHeaders(response)) ;
					};
				};
				future.setRequest(mRequestQueue.add(addressRequest));

				JSONObject response = future.get();
				returnedLocation = MapUtils.getLatLngFromGoogleJson(response);
			} catch(InterruptedException e) {
				if(Log.isLoggable(TAG, Log.ERROR))Log.e(TAG, "", e);
			} catch (ExecutionException e) {
				if(Log.isLoggable(TAG, Log.ERROR))Log.e(TAG, "", e);
			} catch (UnsupportedEncodingException e) {
				if(Log.isLoggable(TAG, Log.ERROR))Log.e(TAG, "", e);
			}
		}
		return returnedLocation;
	}

	@Override
	protected void onPostExecute(LatLng result) {
		if(Log.isLoggable(TAG, Log.INFO))Log.i(TAG, "onPostExecute");
		super.onPostExecute(result);
		
		if(mListener != null) {
			mListener.onFinish(result);
		}
	}

}