How to avoid already-authorized in Android Facebook SDK

Question

I\'m getting a completely useless page when I use the Single Sign on for Facebook\'s Android SDK.

\"You have already authorized happyapp. Press \"O

Answer 1

using the suggestion here, this is the code that worked for me, hope it helps someone

before login do this

SharedPreferences prefs= PreferenceManager.getDefaultSharedPreferences(FacebookLogin.this); 
                        String access_token = prefs.getString("access_token", null); 
                        Long expires = prefs.getLong("access_expires", -1);


                        if (access_token != null && expires != -1)
                        {
                            facebook.setAccessToken(access_token);
                            facebook.setAccessExpires(expires);
                        }


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

after you successfully logged in do this

String token = facebook.getAccessToken();
long token_expires = facebook.getAccessExpires();

SharedPreferences prefs= PreferenceManager.getDefaultSharedPreferences(FacebookLogin.this);

prefs.edit().putLong("access_expires", token_expires).commit();

prefs.edit().putString("access_token", token).commit();