Question

I’ve been working on a simple app for android – and i’m trying to login using Single Sign-On using the Facebook Android SDK.

I’m trying to save the profile picture and username. I’m not quite sure what’s wrong – but nothing seems to happen after I Sign In on Facebook.

Here’s my code:

public class fbLogin extends Activity {
 Facebook facebook = new Facebook("MY-APP-ID");
 private SharedPreferences mPrefs;
 public boolean flag=false;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.fblogin_screen);
        mPrefs=getPreferences(MODE_PRIVATE);
        String acces_token=mPrefs.getString("acces_token",null);
        long expires=mPrefs.getLong("acces_expires", 0);

        if(acces_token!=null)
        {
            facebook.setAccessToken(acces_token);
        }
        if(expires!=0)
        {
            facebook.setAccessExpires(expires);
        }

        if(!facebook.isSessionValid())
        {
        facebook.authorize(this, new DialogListener() {

            public void onComplete(Bundle values) {
                flag=true;
                 SharedPreferences.Editor editor = mPrefs.edit();
                 editor.putString("access_token", facebook.getAccessToken());
                 editor.putLong("access_expires", facebook.getAccessExpires());
                 editor.commit();

            }

            public void onFacebookError(FacebookError error) {}

            public void onError(DialogError e) {}

            public void onCancel() {}
        });
    } else{
        flag=true;
        }

        if(flag==true)
        {
            try {
                JSONObject me = new JSONObject(facebook.request("me"));
                String id=me.getString("id");
                String userName=me.getString("username");
                ImageView picture;
                TextView usr = (TextView)findViewById(R.id.userName);
                picture = (ImageView) findViewById(R.id.profilePicture);
                URL image_value= new URL("http://graph.facebook.com/" + userName + "/pictures" );
                Bitmap profPict=BitmapFactory.decodeStream(image_value.openConnection().getInputStream());
                picture.setImageBitmap(profPict);
                usr.setText(userName);
            } catch (MalformedURLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (JSONException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        facebook.authorizeCallback(requestCode, resultCode, data);
    }

What am I doing wrong?

Answer 1

Change this
URL image_value= new URL(“http://graph.facebook.com/” + userName + “/pictures” );
to this
URL image_value= new URL(“http://graph.facebook.com/” + userName + “/picture” );