Login logic in Android using SQLite DB

Hi All,
Use this code to impliment login logic in Android using SQLite
Use the below function 'HUP1(View view)' in the click of a Button.

public void HUP1(View view)

{

      

       SQLiteDatabasehupdb;

       hupdb=this.openOrCreateDatabase("hup", MODE_PRIVATE, null);

       hupdb.openDatabase("data/data/com.example.hupdb1/databases/hup", null, SQLiteDatabase.OPEN_READONLY);

       String s="select * from registration where username=’admin’ and password=’admin’";

       Cursor c=hupdb.rawQuery(s, null);

       if(c!=null)

       {

              if(c.moveToFirst())

              {

              do

              {

                     String username=c.getString(0);

                     String abc=c.getString(1);

                     //write Intent code here

              }while(c.moveToNext());

              }//if

}//if

//Write Toast message here showing invalid login

}