如何在sqlite DB中存储登录和注销时间

我在时间类中占用了机器时间，然后将我的登录用户名和密码插入sqlite表中的登录类中，并且我必须插入从另一个类中获取的值，因为我已经创建了一个变量（timedate ）在登录时从时间类中获取时间，同时调用方法insertEntry（userName，timedate），但是如果有人对此有任何想法，我无法发送，请帮助我。

这是我的代码

   import android.app.Activity;
    import android.content.Intent;
    import android.os.Bundle;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.Button;
    import android.widget.EditText;
    import android.widget.SimpleCursorAdapter;
    import android.widget.Toast;

    public class HomeActivity extends Activity implements OnClickListener
    {
        public static String userName;
        EditText editTextUserName,editTextpassword;
        Button btnSignIn;
        SimpleCursorAdapter adapter;
        LoginDataBaseAdapter loginDataBaseAdapter;
        String timedate = time.formattedDate;
        @Override
        protected void onCreate(Bundle savedInstanceState) 
        {
             super.onCreate(savedInstanceState);
             setContentView(R.layout.loginpage);

             // create a instance of SQLite Database
             loginDataBaseAdapter=new LoginDataBaseAdapter(this);
             loginDataBaseAdapter=loginDataBaseAdapter.open();
             editTextUserName=(EditText)findViewById(R.id.editTextUserNameToLogin); 
                editTextpassword=(EditText)findViewById(R.id.editTextUserPasswordToLogin); 
                btnSignIn=(Button)findViewById(R.id.buttonSignIn); 
     btnSignIn.setOnClickListener((OnClickListener) this);

    }
    public void onClick(View v) {
        String  userName=editTextUserName.getText().toString();
            @SuppressWarnings("unused")
            String password=editTextpassword.getText().toString();


                    if(userName.equals(""))     
        {
                    Toast.makeText(getApplicationContext(), "userName does not match", Toast.LENGTH_LONG).show();
                    return;
                }
    {   
            loginDataBaseAdapter.insertEntry(userName,timedate);

            Toast.makeText(getApplicationContext(), "Congrats: Login Successfull", Toast.LENGTH_LONG).show();
      Toast.makeText(this, timedate, Toast.LENGTH_SHORT).show();

                Intent name=new Intent(HomeActivity.this,enteredlogin.class);
                startActivity(name);
    }}

DBHelper类，

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;

public class LoginDataBaseAdapter 
{
        static final String DATABASE_NAME = "login.db";
        static final int DATABASE_VERSION = 1;
        public static final int NAME_COLUMN = 1;

        static final String DATABASE_CREATE = "create table "+"LOGIN"+
                                     "( " +"ID"+" integer primary key autoincrement,"+ "USERNAME  text,FORMATTEDDATE text); ";

        public  SQLiteDatabase db;
        // Context of the application using the database.
        private final Context context;

        private DataBaseHelper dbHelper;
        public  LoginDataBaseAdapter(Context _context) 
        {
            context = _context;
            dbHelper = new DataBaseHelper(context, DATABASE_NAME, null, DATABASE_VERSION);
        }
        public  LoginDataBaseAdapter open() throws SQLException 
        {
            db = dbHelper.getWritableDatabase();
            return this;
        }
        public void close() 
        {
            db.close();
        }

        public  SQLiteDatabase getDatabaseInstance()
        {
            return db;
        }

        public void insertEntry(String userName,String timedate)
        {
           ContentValues newValues = new ContentValues();

            newValues.put("USERNAME", userName);
            newValues.put("FORMATTEDDATE",timedate);

            // Insert the row into your table
            db.insert("LOGIN", null, newValues);
            ///Toast.makeText(context, "Reminder Is Successfully Saved", Toast.LENGTH_LONG).show();
        }