dbhelper public methods

package at.android.twhk;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.sql.SQLException;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;


public class DataBaseHelper extends SQLiteOpenHelper{
 
    //The Android's default system path of your application database.
    private static String DB_PATH = "/data/data/at.android.twhk/databases/";
    private static String DB_NAME = "twhk_android_sqlite";

 
    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 DataBaseHelper(Context context) {
 
        super(context, DB_NAME, null, 1);
        this.myContext = context;
    }    
 
  /**
     * Creates a empty database on the system and rewrites it with your own database.
     * */
    public void createDataBase() throws IOException{
 
        boolean dbExist = checkDataBase();
 
        if(dbExist){
            //do nothing - database already exist
        }else{
 
            //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.getReadableDatabase();
 
            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_READONLY);
 
        }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_READONLY);
 
    }
 
    @Override
    public synchronized void close() {
 
            if(myDataBase != null)
                myDataBase.close();
 
            super.close();
 
    }
    
    
    
    
[COLOR=Red]    // 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.[/COLOR]
    
    

    @Override
    public void onCreate(SQLiteDatabase db) {
        // TODO Auto-generated method stub
        
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        // TODO Auto-generated method stub
        
    }

    public void open() {
        // TODO Auto-generated method stub
        
    }

    

    
        
        

    

}

private StorageDBOpenHelper dbHelper;

public oncreate(){
dbHelper = new StorageDBOpenHelper(this);
}

public void getDataFromDB(){
String statement = "select * from listen_with_info";
SQLiteDatabase db = dbHelper.getWritableDatabase();

Cursor cursor = db.rawQuery(statement, new String[] {});
                
                String listResult = "";
                while (cursor.moveToNext())
                {
                    for (int i = 0; i < cursor.getColumnCount(); i++)
                    {
                        if (i > 0)
                        {
                            
                            listResult += cursor.getString(i);
                          
                        }
                    }
                    
                    stringsForList.add(listResult);
                    listResult = "";
                   
                }
}
}