Intent activity after facebook login opened twice – Facebook api

I have a main activity that displays login option, if the user clicked login with FB button, I will call fblogin();, and if the login success then I will do intent to open home activity.

right now, the home activity seems to open twice. (i can see it appear twice, stacked)

private void Fblogin()
{
    callbackmanager = CallbackManager.Factory.create();

    // Set permissions
    LoginManager.getInstance().logInWithReadPermissions(this, Arrays.asList("public_profile, email, user_birthday,user_friends"));

    LoginManager.getInstance().registerCallback(callbackmanager, new FacebookCallback<LoginResult>() {
        @Override
        public void onSuccess(LoginResult loginResult) {

            GraphRequest request = GraphRequest.newMeRequest(
                    loginResult.getAccessToken(),
                    new GraphRequest.GraphJSONObjectCallback() {
                        @Override
                        public void onCompleted(JSONObject object, GraphResponse response) {

                            Log.d("LoginActivity", response.toString());
                            Log.d("LoginActivity", object.toString());

                            String jsonresult = String.valueOf(object);
                            System.out.println("JSON Result" + jsonresult);
                            String str_firstname=null,str_id=null;


                            try {

                                str_firstname=object.getString("name");
                                str_id = object.getString("id");
                                String str_email = object.getString("email");

                                Intent home = new Intent(MainActivity.this , HomeActivity.class);
                                home.putExtra("name", str_firstname);
                                home.putExtra("URL", "https://graph.facebook.com/" + str_id + "/picture?width="+PROFILE_PIC_SIZE+"&height="+PROFILE_PIC_SIZE);
                                startActivity(home);


                            } catch (JSONException e) {
                                e.printStackTrace();
                                Log.d("xxxx","aa");
                            }



                        }
                    });
            Bundle parameters = new Bundle();
            parameters.putString("fields", "id,name,email,gender, birthday");
            request.setParameters(parameters);
            request.executeAsync();


        }

        @Override
        public void onCancel() {

            Log.v("LoginActivity", "cancel");
        }

        @Override
        public void onError(FacebookException exception) {

            Log.v("LoginActivity", exception.getCause().toString());

        }
    });
}

in my main activity, i call this in my on create FacebookSdk.sdkInitialize(getApplicationContext());

, iI also check for initial login status `

if ( AccessToken.getCurrentAccessToken() != null && Profile.getCurrentProfile()!=null ) {

                Intent home = new Intent(MainActivity.this , HomeActivity.class);
                startActivity(home);}

but I think that initial check has nothing to do with it becauseI tried to delete it too but it still happening.`

and in my Home Activity, I have not write any facebook related codes yet.

EDIT : I PUT WHOLE CODE (MainActivity)

import ...

public class MainActivity extends AppCompatActivity implements View.OnClickListener  {


        public static Boolean IsLoggedFB = false; //general state of fb logged
        public static Boolean IsLoggedManual =false; //status boolean if logged in by email (manual)
        public static Boolean IsLoggedGM = false; //general state of google gmail logged


        String  ID_HNBS;  //IDhnbs created when first Registered
        String  Email;

        TextView Fpassword;
        Button Daftar;
        EditText email, password;
        Button LoginEmail;
        LoginButton fb_button;
        SignInButton gplus_button;
        MainActivity myContext;
        static String personName;
        private boolean mIntentInProgress;
        FragmentManager fragmentManager;
        private CallbackManager callbackmanager;

        //for G+
        private GoogleSignInOptions gso;
        private static final int PROFILE_PIC_SIZE = 30;
        private GoogleApiClient mGoogleApiClient;
        private ConnectionResult mConnectionResult;
        private boolean mSignInClicked;
        static final int RC_SIGN_IN = 0;

        /* Is there a ConnectionResult resolution in progress? */
        private boolean mIsResolving = false;

        LinearLayout tv;
        /* Should we automatically resolve ConnectionResults when possible? */
        private boolean mShouldResolve = false;
        public static final String MyPREFERENCES = "xpp";
        SharedPreferences sharedpreferences;
        @Override

        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            FacebookSdk.sdkInitialize(getApplicationContext());
            setContentView(R.layout.activity_main);

            sharedpreferences = getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);
            SharedPreferences.Editor editor = sharedpreferences.edit();


            IsLoggedManual = sharedpreferences.getBoolean("IsLoggedManual", false); // get value of last login status
            IsLoggedGM = sharedpreferences.getBoolean("IsloggedGM", false); // get value of last login GM


            Daftar = (Button) findViewById(R.id.buttonDaftarEmail);
            LoginEmail = (Button) findViewById(R.id.buttonLoginEmail);
            fb_button = (LoginButton)findViewById(R.id.fblogin_button);




            //Initializing google signin option
            gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                    .requestEmail()
                    .build();


            gplus_button = (SignInButton) findViewById(R.id.sign_in_button);
            gplus_button.setSize(SignInButton.SIZE_STANDARD);
            gplus_button.setScopes(gso.getScopeArray());

            //Initializing google api client
            mGoogleApiClient = new GoogleApiClient.Builder(this)
                    //.enableAutoManage(this /* FragmentActivity */, this /* OnConnectionFailedListener */)
                    .addApi(Auth.GOOGLE_SIGN_IN_API, gso)
                    .build();



            Daftar.setOnClickListener(this);
            LoginEmail.setOnClickListener(this);
            fb_button.setOnClickListener(this);
            gplus_button.setOnClickListener(this);

            OptionalPendingResult<GoogleSignInResult> opr = Auth.GoogleSignInApi.silentSignIn(mGoogleApiClient);
            if (opr.isDone())
            {
                // If the user's cached credentials are valid, the OptionalPendingResult will be "done"
                // and the GoogleSignInResult will be available instantly.
                Log.d("TAG", "Got cached sign-in");

                GoogleSignInResult result = opr.get();

                handleSignInResult(result);

            }
            Log.d("TAG", "ACCESS TOKEN STATUS" + AccessToken.getCurrentAccessToken() + " --- profile=" + Profile.getCurrentProfile());

            //CHECK IF ALREADY LOGGED BY FB
            if ( AccessToken.getCurrentAccessToken() != null && Profile.getCurrentProfile()!=null ) {
                //load profile and skip (loginfragment) to Home page
                Intent home = new Intent(MainActivity.this , HomeActivity.class);
                startActivity(home);

            } else if ( IsLoggedManual ) {   //IF already LOGGED IN MANUAL (SHAREDPREF)
                Intent home = new Intent(MainActivity.this , HomeActivity.class);
                startActivity(home);

            }
        }


    @Override
    public void onClick(View v) {
        if (v.getId() == R.id.buttonDaftarEmail) {

            Intent intent = new Intent(MainActivity.this, UserRegistration.class);
            startActivity(intent);
        } else if (v.getId() == R.id.buttonLoginEmail) {

            Intent intent_signin = new Intent(MainActivity.this, LoginManual.class);
            startActivity(intent_signin);


        } else if (v.getId() == R.id.fblogin_button) {


            Fblogin();

        } else if (v.getId() == R.id.sign_in_button) //google sign in button
        {
            Intent intent_Gsignin = new Intent(MainActivity.this, GSignIn.class);
            startActivity(intent_Gsignin);
        }

    }

    private void onSignInClicked() {
        // User clicked the sign-in button, so begin the sign-in process and automatically
        // attempt to resolve any errors that occur.

        mShouldResolve = true;
        mGoogleApiClient.connect();



    }

    @Override
    public void onStart() {
        super.onStart();

    }

    @Override
    public void onStop() {
        super.onStop();

    }


    private void Fblogin()
    {
        callbackmanager = CallbackManager.Factory.create();

        // Set permissions
        LoginManager.getInstance().logInWithReadPermissions(this, Arrays.asList("public_profile, email, user_birthday,user_friends"));

        LoginManager.getInstance().registerCallback(callbackmanager, new FacebookCallback<LoginResult>() {
            @Override
            public void onSuccess(LoginResult loginResult) {
                // App code
                GraphRequest request = GraphRequest.newMeRequest(
                        loginResult.getAccessToken(),
                        new GraphRequest.GraphJSONObjectCallback() {
                            @Override
                            public void onCompleted(JSONObject object, GraphResponse response) {
                                // Application code
                                Log.d("LoginActivity", response.toString());
                                Log.d("LoginActivity", object.toString());

                                String jsonresult = String.valueOf(object);
                                System.out.println("JSON Result" + jsonresult);
                                String str_firstname=null,str_id=null;


                                try {

                                    str_firstname=object.getString("name");
                                    str_id = object.getString("id");
                                    String str_email = object.getString("email");

                                    Intent home = new Intent(MainActivity.this , HomeActivity.class);
                                    home.putExtra("name", str_firstname);
                                    home.putExtra("URL", "https://graph.facebook.com/" + str_id + "/picture?width="+PROFILE_PIC_SIZE+"&height="+PROFILE_PIC_SIZE);
                                    startActivity(home);


                                } catch (JSONException e) {
                                    e.printStackTrace();
                                    Log.d("xxxx","aa");
                                }



                            }
                        });
                Bundle parameters = new Bundle();
                parameters.putString("fields", "id,name,email,gender, birthday");
                request.setParameters(parameters);
                request.executeAsync();


            }

            @Override
            public void onCancel() {

                Log.v("LoginActivity", "cancel");
            }

            @Override
            public void onError(FacebookException exception) {

                Log.v("LoginActivity", exception.getCause().toString());

            }
        });
    }

    //After the signing we are calling this function
    private void handleSignInResult(GoogleSignInResult result) {
        //If the login succeed
        if (result.isSuccess()) {
            //Getting google account
            GoogleSignInAccount acct = result.getSignInAccount();
            //tv= (LinearLayout) tv.findViewById(R.id.layoutfragmentlogin);
            //tv.setVisibility(View.GONE); //hide include , so include now show nothing


            Intent Home=new Intent(this,HomeActivity.class);
            Home.putExtra("name",acct.getDisplayName());
            Home.putExtra("email", acct.getEmail());
            Home.putExtra("URL",acct.getPhotoUrl());
            startActivity(Home);

        } else {
            //If login fails
            Toast.makeText(this, "Login Failed on silentsign in", Toast.LENGTH_LONG).show();
        }
    }

    //@Override
    public void onConnected(Bundle bundle) {
        mSignInClicked = false;


        Toast.makeText(myContext, "User is connected!", Toast.LENGTH_LONG).show();

    }

   //@Override
    public void onConnectionSuspended(int i) {
        mGoogleApiClient.connect();
    }


    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(callbackmanager!=null) {
            callbackmanager.onActivityResult(requestCode, resultCode, data);
            Log.d("ani", "onActivityResult:" + requestCode + ":" + resultCode + ":" + data);
        }

        if (requestCode == RC_SIGN_IN) {
            // If the error resolution was not successful we should not resolve further.
            if (resultCode != this.RESULT_OK) {
                mShouldResolve = false;
            }

            mIsResolving = false;
            mGoogleApiClient.connect();
        }
    }

    //@Override
    public void onConnectionFailed(ConnectionResult connectionResult)
    {
        //prefs.edit().putBoolean("Islogin",false).commit();
        //DO Nothing..


        /*
        //==========Below is Trying to connect if googleUser not connected already =======
        // Could not connect to Google Play Services.  The user needs to select an account,
        // grant permissions or resolve an error in order to sign in. Refer to the javadoc for
        // ConnectionResult to see possible error codes.
        Log.d("ani", "onConnectionFailed:" + connectionResult);

        if (!mIsResolving && mShouldResolve) {
            if (connectionResult.hasResolution()) {
                try {
                    connectionResult.startResolutionForResult(getActivity(), RC_SIGN_IN);
                    mIsResolving = true;
                } catch (IntentSender.SendIntentException e) {
                    Log.e("ani", "Could not resolve ConnectionResult.", e);
                    mIsResolving = false;
                    mGoogleApiClient.connect();
                }
            }
        }*/

    }

    @Override
    public void onBackPressed() {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setMessage("Are you sure you want to exit?")
                .setTitle("HnBS Alert")
                .setCancelable(false)
                .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {

                        finishAffinity();

                    }
                })
                .setNegativeButton("No", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        dialog.cancel();
                    }
                });
        AlertDialog alert = builder.create();
        alert.show();
    }





}

EDIT 2 : MY HOMEACTIVITY CODE

class ViewPagerAdapter extends FragmentPagerAdapter {
    private final List<Fragment> mFragmentList = new ArrayList<>();
    private final List<String> mFragmentTitleList = new ArrayList<>();

    public ViewPagerAdapter(FragmentManager manager) {
        super(manager);
    }

    @Override
    public Fragment getItem(int position) {
        return mFragmentList.get(position);
    }

    @Override
    public int getCount() {
        return mFragmentList.size();
    }

    public void addFragment(Fragment fragment, String title) {
        mFragmentList.add(fragment);
        mFragmentTitleList.add(title);
    }

    @Override
    public CharSequence getPageTitle(int position) {
        return mFragmentTitleList.get(position);
    }
}


/**
 * react to the user tapping/selecting an options menu item
 */
@Override

public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        case R.id.action_menu_logout:
            LoginManager.getInstance().logOut();  //LogOut from Facebook

            //logout from login manual
            sharedpreferences = getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);
            SharedPreferences.Editor editor = sharedpreferences.edit();
            editor.putBoolean("IsLoggedManual",false).commit();

            //if (mGoogleApiClient.isConnected()) {
              //  if (mGoogleApiClient.isConnected())
              //      Auth.GoogleSignInApi.signOut(mGoogleApiClient);

            //}

            Toast.makeText(this, "LoggedOut!", Toast.LENGTH_SHORT).show();
            finish();
            return true;
        default:
            return super.onOptionsItemSelected(item);
    }
}

@Override
public void onBackPressed() {
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setMessage("Are you sure you want to exit?")
            .setCancelable(false)
            .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int id) {

                    finishAffinity();

                }
            })
            .setNegativeButton("No", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int id) {
                    dialog.cancel();
                }
            });
    AlertDialog alert = builder.create();
    alert.show();
}

}