android - How to avoid login multiple times in Facebbok login by using in SDK 3.01 -

i using latest faceboook android sdk 3.01 in application. using able share on facebook wall it's working fine, login it's asking login on every time when want share on facebbok. when login facebook , closing application coming app (open again) , try try sharing on facebook again it's asking login. in previous sdk commented code in facebbok class , code not available in facebook class. trying

utility.mfacebook = new facebook(app_id);          utility.masyncrunner = new asyncfacebookrunner(utility.mfacebook); sessionstore.restore(utility.mfacebook, this); boolean see =  utility.isactive();       if(!utility.mfacebook.issessionvalid()) {    utility.mfacebook.authorize(this, permissions, authorize_activity_result_code, new logindialoglistener()); } else {                posttowall(); } 

how avoid login multiple times ?

it seems have diabled singlesignon feature altogether.

find method authorize(..) , enable singlesignon there.

like..

public void authorize(activity activity, string[] permissions,             final dialoglistener listener) {         authorize(activity, permissions, default_auth_activity_code/*force_dialog_auth*/, listener);//force_dialog_auth-- disable singlesignonstarted.      }