how do i store contact after picking in android app?

Question

package com.example.abhishek.detector;

import android.app.Activity;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import java.util.ArrayList;

public class Main2Activity extends AppCompatActivity implements View.OnClickListener {

Button Contact;
TextView txt;
private ArrayList<String> contactList;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);

Contact = (Button) findViewById(R.id.button4);
txt = (TextView) findViewById(R.id.textView);

Contact.setOnClickListener(this);
}


@Override
public void onClick(View arg0) {
if (arg0 == Contact) {
try {
Intent intent = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
startActivityForResult(intent, 1);
SharedPreferences.Editor editor = sharedpreferences.edit();
} catch (Exception e) {
e.printStackTrace();
Log.e("Error in intent : ", e.toString());
}
}
}


@Override
public void onActivityResult(int reqCode, int resultCode, Intent data) {
super.onActivityResult(reqCode, resultCode, data);

try {
if (resultCode == Activity.RESULT_OK) {
Uri contactData = data.getData();
Cursor cur = managedQuery(contactData, null, null, null, null);
ContentResolver contect_resolver = getContentResolver();

if (cur.moveToFirst()) {
String id = cur.getString(cur.getColumnIndexOrThrow(ContactsContract.Contacts._ID));
String name = "";
String no = "";

Cursor phoneCur = contect_resolver.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[]{id}, null);

if (phoneCur.moveToFirst()) {
name = phoneCur.getString(phoneCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
no = phoneCur.getString(phoneCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
}

Log.e("Phone no & name :***: ", name + " : " + no);
txt.append(name + " : " + no + "\n");

id = null;
name = null;
no = null;
phoneCur = null;
}
contect_resolver = null;
cur = null;
// populateContacts();
}
} catch (IllegalArgumentException e) {
e.printStackTrace();
Log.e("IllegalArgumentException::", e.toString());
} catch (Exception e) {
e.printStackTrace();
Log.e("Error :: ", e.toString());
}
}




}