سلام یه سوال به کدوم بخش این کد SharedPreferences اضافه کنم؟

طراح فروشگاه اندروید, [08.10.17 12:08]
package ir.pasina.pasina;

import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import org.json.JSONException;
import org.json.JSONObject;

import java.util.HashMap;

import ir.pasina.pasina.utils.CallbackDialog;
import ir.pasina.pasina.utils.DialogUtils;
import ir.pasina.pasina.utils.Shared;
import uk.co.chrisjenx.calligraphy.CalligraphyContextWrapper;

public class LoginActivity extends AppCompatActivity {
    String strusername;
    String strpassword;
    String userid;
    String name;
    String familyname;
    String invitecode;
    String onvan;
    String message;
    String soaltitle;
    String item1;
    String item2;
    String item3;
    String item4;
    String tr;
    String soalid = "NULL";
    ProgressDialog alertDialog2;

    @Override
    public void onBackPressed() {
        finish();
    }

    @Override
    protected void attachBaseContext(Context newBase) {
        super.attachBaseContext(CalligraphyContextWrapper.wrap(newBase));
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        Shared.init(LoginActivity.this);
        onvan = Shared.read("onvan", null);
        message = Shared.read("message", null);
        if (onvan.equals("null")) {
            Log.i("f", "f");
        } else {
            AlertDialog.Builder builder = new AlertDialog.Builder(LoginActivity.this);
            builder.setTitle(onvan);
            Shared.write("onvan", "null");
            builder.setMessage(message);
            builder.setPositiveButton("تست", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int id) {
                    dialog.dismiss();

                }
            });
            AlertDialog alert = builder.create();
            alert.show();
        }

        final EditText edtusername = (EditText) findViewById(R.id.edtusername);
        final EditText edtpassword = (EditText) findViewById(R.id.edtpassword);
        Button loginbtn = (Button) findViewById(R.id.loginbtn);
        Button registerbtn = (Button) findViewById(R.id.registerbtn);
        final TextView txtforgetpass = (TextView) findViewById(R.id.txtforgetpass);

        txtforgetpass.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Uri uri = Uri.parse("http://test/");
                Intent intent = new Intent(Intent.ACTION_VIEW, uri);
                startActivity(intent);
            }
        });

        registerbtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Uri uri = Uri.parse("http://test/");
                Intent intent = new Intent(Intent.ACTION_VIEW, uri);
                startActivity(intent);
            }
        });

        loginbtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                AlertDialog.Builder builder1 = new AlertDialog.Builder(LoginActivity.this);
                builder1.setMessage("تست");
                builder1.setCancelable(true);
                AlertDialog alert11 = builder1.create();
                alert11.show();

                strusername = edtusername.getText().toString().trim();
                strpassword = edtpassword.getText().toString().trim();


Request req = new Request();
                String url = "GetLogin.php";
                HashMap<String, String> meMap = new HashMap<String, String😠);
                meMap.put("SECRET", "UIOH#(@HER(*@#H#*123$N(!*@4432984#^C$*(^!@#($&!@#&");
                meMap.put("Login", "1");
                meMap.put("Username", strusername);
                meMap.put("Password", strpassword);
                String result = req.performPostCall(url, meMap);
                try {

                    JSONObject json = new JSONObject(result);
                    if (json.has("Code")) {
                        if (json.getString("Code").equals("200")) {
                            if (json.has("Qid")) {
                                soaltitle = json.getString("onvan");
                                item1 = json.getString("g1");
                                item2 = json.getString("g2");
                                item3 = json.getString("g3");
                                item4 = json.getString("g4");
                                tr = json.getString("tr");
                                soalid = json.getString("Qid");
                                Shared.init(LoginActivity.this);
                                Shared.write("soaltitle", soaltitle);
                                Shared.write("item1", item1);
                                Shared.write("item2", item2);
                                Shared.write("item3", item3);
                                Shared.write("item4", item4);
                                Shared.write("tr", tr);
                                Shared.write("soalid", soalid);
                            } else {
                                Shared.write("soalid", "null");
                            }

                            userid = json.getString("userid");
                            name = json.getString("name");
                            familyname = json.getString("fname");

                            Shared.init(LoginActivity.this);
                            Shared.write("userid", userid);
                            Shared.write("name", name);
                            Shared.write("familyname", familyname);
                            Intent intent = new Intent(LoginActivity.this, MainActivity.class);
                            startActivity(intent);
                            finish();

                        } else {
                            alert11.dismiss();
                            Dialog dialog = new DialogUtils(LoginActivity.this).buildDialogWarning(R.string.tavajoh, R.string.loginwrong, R.string.TRY_AGAIN, R.string.CLOSE, R.drawable.img_no_connect, new CallbackDialog() {
                                @Override
                                public void onPositiveClick(Dialog dialog) {
                                    dialog.dismiss();
                                }

                                @Override
                                public void onNegativeClick(Dialog dialog) {
                                    finish();
                                }
                            });
                            dialog.show();
                        }
                    }
                } catch (JSONException e) {
                    alert11.dismiss();
                    e.printStackTrace();
                }
            }
        });


    }
}