HELP!!!! Android Studio, fetch specific database row on login and diplay it

I have a sqlite database that the user can register to! I have successfully created a login form and when the login is successful (database’s username and password match what the user has entered on the form) the user is redirected to another activity. What i want is in the activity that the user is redirected,
to display his entire database row (id,username, books,email,course, password, student name) based on his username or id!! Any ideas?? I would really appreciate if you could help me…This is urgent!!!

Here is my code for creating the database:

static final String DATABASE_CREATE = "create table "+"LOGIN"+
    "( " +"ID"+" integer primary key autoincrement,"+ "USERNAME  varchar2," +
    "PASSWORD varchar2, COURSE varchar2, EMAIL varchar2, STUDENT_NAME varchar2); ";

Here is the code for storing users to the database:

public void insertEntry(String userName,String password,String course,String email, String student_name)
    ContentValues newValues = new ContentValues(); 
   // Assign values for each row. 

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

and finally here is the login code:

            Toast.makeText(MyActivity.this, "Congrats: Login Successfull", Toast.LENGTH_LONG).show();
            startActivity(new Intent(MyActivity.this, Login_home.class));
            Toast.makeText(MyActivity.this, "User Name or Password does not match", Toast.LENGTH_LONG).show();

Can you please provide me with the class that does what I’m after??? I’ve checked everything and this is really important!! Thanks in advance!!