How to get data from database file in Assest folder

package com.adeptpros.trivia.db;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

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

import com.adeptpros.trivia.quiz.Level;
import com.adeptpros.trivia.quiz.Question;


public class DBHelper extends SQLiteOpenHelper{

//The Android's default system path of your application database.
private static String DB_PATH = "/data/data/com.adeptpros.trivia/databases/";
private static String DB_NAME = "questionsDb";
private SQLiteDatabase myDataBase;
private final Context myContext;

/**
* Constructor
* Takes and keeps a reference of the passed context in order to access to the application assets and resources.
* @param context
*/
public DBHelper(Context context) {
super(context, DB_NAME, null, 1);
this.myContext = context;
System.out.println("With in Constructor......................");
}

/**
* Creates a empty database on the system and rewrites it with your own database.
* */
public void createDataBase() throws IOException{

boolean dbExist = checkDataBase();
if(!dbExist)
{
//By calling this method and empty database will be created into the default system path
//of your application so we are gonna be able to overwrite that database with our database.
this.getWritableDatabase();

try {
copyDataBase();
} catch (IOException e) {
throw new Error("Error copying database");
}
}
}

/**
* Check if the database already exist to avoid re-copying the file each time you open the application.
* @return true if it exists, false if it doesn't
*/
private boolean checkDataBase(){
SQLiteDatabase checkDB = null;
try{
String myPath = DB_PATH + DB_NAME;
checkDB = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READWRITE);
}catch(SQLiteException e){
//database does't exist yet.
}
if(checkDB != null){
checkDB.close();
}

return checkDB != null ? true : false;
}

/**
* Copies your database from your local assets-folder to the just created empty database in the
* system folder, from where it can be accessed and handled.
* This is done by transfering bytestream.
* */
private void copyDataBase() throws IOException{

//Open your local db as the input stream
InputStream myInput = myContext.getAssets().open(DB_NAME);

// Path to the just created empty db
String outFileName = DB_PATH + DB_NAME;

//Open the empty db as the output stream
OutputStream myOutput = new FileOutputStream(outFileName);

//transfer bytes from the inputfile to the outputfile
byte[] buffer = new byte[1024];
int length;
while ((length = myInput.read(buffer))>0){
myOutput.write(buffer, 0, length);
}

//Close the streams
myOutput.flush();
myOutput.close();
myInput.close();

}

public void openDataBase() throws SQLException{
//Open the database
String myPath = DB_PATH + DB_NAME;
myDataBase = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READWRITE);
}


public synchronized void close() {
if(myDataBase != null)
myDataBase.close();
super.close();
}


public void onCreate(SQLiteDatabase db) {
}


public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}

// Add your public helper methods to access and get content from the database.
// You could return cursors by doing "return myDataBase.query(....)" so it'd be easy
// to you to create adapters for your views.




public List<Question> getQuestionSet(int difficulty, int numQ){
List<Question> questionSet = new ArrayList<Question>();
Cursor c = myDataBase.rawQuery("SELECT * FROM QUESTIONS WHERE DIFFICULTY=" + difficulty, null);
while (c.moveToNext()){
//Log.d("QUESTION", "Question Found in DB: " + c.getString(1));
Question q = new Question();
q.setQuestion(c.getString(1));
q.setAnswer(c.getString(2));
q.setOption1(c.getString(3));
q.setOption2(c.getString(4));
q.setOption3(c.getString(5));
q.setNote(c.getString(7));
q.setDiduknw(c.getString(8));
q.setRating(difficulty);
questionSet.add(q);
}
return questionSet;
}

public Level getSelectedLevel(int levelPosition){
openDataBase();
Cursor c = myDataBase.rawQuery("SELECT * FROM Levels WHERE Level_Number=" + levelPosition,null);
c.moveToFirst();
Level level=new Level();
level.setLevel_No(c.getInt(0));
level.setBest_Score(c.getInt(1));
level.setStar_Rating(c.getDouble(2));
level.setIsUnlocked(c.getString(3));
return level;
}


public ArrayList<Level> getUnlockedLevelsfromdb()
{

Cursor c = myDataBase.rawQuery("SELECT * FROM Levels WHERE is_Unlocked='Yes'" ,null);
c.moveToFirst();
ArrayList<Level> levels=new ArrayList<Level>();
for (int i = 0; i < c.getCount(); i++) {
Level level=new Level();
level.setLevel_No(c.getInt(0));
level.setBest_Score(c.getInt(1));
level.setStar_Rating(c.getDouble(2));
level.setIsUnlocked(c.getString(3));
levels.add(level);
c.moveToNext();
}
c.close();
return levels;
}

public void updateBestScore(int selectedPosition,ContentValues contentValues)
{
int k=myDataBase.update("Levels", contentValues, "Level_Number="+selectedPosition, null);
if(k>0)
{
System.out.println("Score Updated in Database.....");
}

}
public void updateStarCount(int selectedLevel,ContentValues contentValues)
{
int k=myDataBase.update("Levels", contentValues, "Level_Number="+selectedLevel, null);
if(k>0)
{
System.out.println("StarCount Updated in Database....."+selectedLevel);
}
}

public void UnlockNextLevel(int selectedPosition)
{
if(!myDataBase.isOpen())
openDataBase();
ContentValues contentValues=new ContentValues();
contentValues.put("is_Unlocked", "Yes");
int k=myDataBase.update("Levels",contentValues,"Level_Number="+(selectedPosition+1), null);
if(k>0)
{
System.out.println("Unlocked Successfully....."+(selectedPosition+1));
}
}
public double getStar_Rating(int level)
{
Cursor c = myDataBase.rawQuery("SELECT * FROM Levels WHERE Level_Number=" + (level) ,null);
c.moveToFirst();
if(c.getCount()!=0)
return c.getDouble(2);
else
return 0;
}


}