php - Can't Log in with Facebook when I export my application -

i built app facebook sdk, working fine on emulator, when exported app run on mobile device, couldn't log in, frustrating because first app , thought working without errors.

my login in works registering button too. when without account tries login, automatically creates account using data facebook.

i'm using php insert data database, i'm calling function when tries log in:

case "loginfb":         facebook_func($_post['email'],$_post['name'],$_post['gender'],$_post['image']); 

my function calls query check if sent e-mail exists normal login, else, creates new account.

    function facebook_func($email,$name,$gender,$image){      $result = db_queries("select * users email='$email'");     $row = mysqli_fetch_array($result);      if($row[16] == 1){ //row 16 check if account uses social network login         if($row[0]){ //check if id exists on database         echo $row[0];         online_func($row[3],$row[0]);     }else{     //inserts new account database      //echo id user     } } 

i'm echoing id user save in java session.

session code:

public class newsession extends application {     session session = new session();     public string getuserid() {       return session.suserid;     } }   

my main activity full code:

public class mainactivity extends activity {      private edittext email, password;     private textview status;     private callbackmanager callbackmanager;     private loginbutton loginbutton;       @override     protected void onactivityresult(int requestcode, int responsecode, intent data) {         super.onactivityresult(requestcode, responsecode, data);         callbackmanager.onactivityresult(requestcode, responsecode, data);     }      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         facebooksdk.sdkinitialize(this.getapplicationcontext());         setcontentview(r.layout.activity_main);          email = (edittext) findviewbyid(r.id.email);         password = (edittext) findviewbyid(r.id.password);         status = (textview) findviewbyid(r.id.statusfield);         callbackmanager = callbackmanager.factory.create();         loginbutton = (loginbutton) findviewbyid(r.id.login_button);         list < string > permissionneeds = arrays.aslist("user_photos", "email");         loginbutton.setreadpermissions(permissionneeds);          loginbutton.registercallback(callbackmanager, new facebookcallback < loginresult > () {@override             public void onsuccess(loginresult loginresult) {                 system.out.println("onsuccess");                 graphrequest request = graphrequest.newmerequest(loginresult.getaccesstoken(), new graphrequest.graphjsonobjectcallback() {                       @override                     public void oncompleted(jsonobject object,                     graphresponse response) {                         // todo auto-generated method stub                         // application code                         log.v("loginactivity", response.tostring());                         //system.out.println("check: " + response.tostring());                         try {                             string id = object.getstring("id");                             string name = object.getstring("name");                             string image = "http://graph.facebook.com/" + id + "/picture?width=600&height=600";                             string email = object.getstring("email");                             string gender = object.getstring("gender");                             string getgender = "";                              if (getgender.equals("male")) {                                 getgender = "2";                             } else {                                 getgender = "1";                             }                             facebooklogin(email, name, getgender, image);                          } catch (jsonexception e) {                             e.printstacktrace();                         }                     }                 });                 bundle parameters = new bundle();                  parameters.putstring("fields", "id,name,email,gender");                 request.setparameters(parameters);                 request.executeasync();             }              @override             public void oncancel() {                 system.out.println("oncancel");             }              @override             public void onerror(facebookexception exception) {                 system.out.println("onerror");                 log.v("loginactivity", exception.getcause().tostring());             }         });     }      public void login(view view) {         string getemail = email.gettext().tostring();         string getpassword = password.gettext().tostring();         new signinactivity(this, status).execute(getemail, getpassword);     }      public void facebooklogin(string email, string name, string gender, string image) {         new fbsigninactivity(this, status).execute(email, name, gender, image);         toast.maketext(getbasecontext(), "...",         toast.length_long).show();     }  } 

my facebook login class

public class fbsigninactivity extends asynctask < string, void, string > {      private textview statusfield;     private context context;     private static final int long_delay = 3500; // 3.5 seconds      public fbsigninactivity(context context, textview statusfield) {         this.context = context;         this.statusfield = statusfield;     }      @override     protected string doinbackground(string...arg0) {          try {             string getemail = (string) arg0[0];             string getname = (string) arg0[1];             string getgender = (string) arg0[2];             string getimage = (string) arg0[3];             string link = "http://www.website.pt/android/index.php?section=loginfb";             string data = urlencoder.encode("email", "utf-8") + "=" + urlencoder.encode(getemail, "utf-8");             data += "&" + urlencoder.encode("name", "utf-8") + "=" + urlencoder.encode(getname, "utf-8");             data += "&" + urlencoder.encode("gender", "utf-8") + "=" + urlencoder.encode(getgender, "utf-8");             data += "&" + urlencoder.encode("image", "utf-8") + "=" + urlencoder.encode(getimage, "utf-8");             url url = new url(link);               urlconnection conn = url.openconnection();             conn.setdooutput(true);             outputstreamwriter wr = new outputstreamwriter(conn.getoutputstream());             wr.write(data);             wr.flush();              authenticator.setdefault(new authenticator() {                 protected passwordauthentication getpasswordauthentication() {                     return new passwordauthentication("user", "pass".tochararray());                 }             });              bufferedreader reader = new bufferedreader(new inputstreamreader(conn.getinputstream()));             stringbuilder sb = new stringbuilder();             string line = null;             // read server response             while ((line = reader.readline()) != null) {                 sb.append(line);                 break;             }             return sb.tostring();         } catch (exception e) {             return new string("exception: " + e.getmessage());         }     }       @override     protected void onpostexecute(string result) {          if (result == "") {             toast.maketext(context, "shows error",             toast.length_long).show();         } else {              toast.maketext(context, "welcome message",             toast.length_long).show();              string newuser = result.substring(0, 1);             string newid = result.substring(1);              if (newuser.equals("n")) {                  toast.maketext(context, "...",                 toast.length_long).show();                  session.suserid = newid;                  intent in = new intent(context,                 editprofile.class);                  in .putextra("checku", "new");                  context.startactivity( in );              }else{                 context.startactivity(new intent(context, listusersactivity.class));                 session.suserid = result;              }          }     } } 

thanks.

when create release apk, it's signed different keystore, first key hash created , put facebook app settings won't work release apk.

you need key hash, new apk, , add settings well.