public static final APP_ID = "asdfasdf";
mFacebook = new Facebook(APP_ID);
mAsyncRunner = new AsyncFacebookRunner(mFacebook);
mAsyncRunner.request("me", new IDRequestListener());

//call the Legacy REST API method friends.getMutualFriends
Bundle parameters = new Bundle();
parameters.putString("friends.getMutualFriends", "auth.expireSession");
String response = request(parameters);

public class WebService    {  
      
    //Bezeichnung der Klasse   
    private final String TAG = "WebService";  
    
    // globale Variable
    HttpClient httpClient;
      
    
    public void getJSONObject(String url)    {  
      
        httpClient = new DefaultHttpClient();  
        HttpGet httpGet = new HttpGet(url);  
        HttpResponse response;  
      
        try {  
            response = httpClient.execute(httpGet);  
      
            // TODO: HTTP-Status (z.B. 404) in eigener Anwendung verarbeiten.  
      
            Log.i(TAG,response.getStatusLine().toString());  
      
            HttpEntity entity = response.getEntity();  
      
            
            if (entity != null) {  
      
                InputStream instream = entity.getContent();  
                BufferedReader reader = new BufferedReader(new InputStreamReader(instream));  
                StringBuilder sb = new StringBuilder();  
      
                String line = null;  
                while ((line = reader.readLine()) != null)    {
                    sb.append(line + "n"); 
                }
                          
                String result=sb.toString(); 
                Log.i(TAG,result);
                
            }
            
            
        }    catch (ClientProtocolException e) {  
                e.printStackTrace();  
        }    catch (IOException e) {  
                e.printStackTrace();  
           }    catch (Exception e){  
                e.printStackTrace();  
           }    finally    {  
                httpGet.abort();  
           }  
           
    }
    
    
    
    public void postJSONObject(String url, JSONObject data, String objectName)    {  

        HttpPost postMethod = new HttpPost(url);  
      
        try    {  
            HttpParams params = new BasicHttpParams();  
            params.setParameter(objectName, data.toString());  
      
            postMethod.setParams(params);  
            httpClient.execute(postMethod);  
            Log.i(TAG, "Post request, data: " + params.toString());  
      
        }    catch (ClientProtocolException e)    {  
            e.printStackTrace();  
        }    catch (IOException e)    {  
            e.printStackTrace();  
        }    catch (Exception e)    {  
            e.printStackTrace();        
        }    finally    {  
            postMethod.abort();  
        }
        
    }
    
        
}

WebService s = new WebService();
s.getJSONObject("https://api.facebook.com/method/friends.getMutualFriends?target_uid=504184526&access_token=oauth_access_token");