How to create Sqlite databse in sdcard

I was looking for the proper solution for creating database in sdcard android after many crashes and links i made the code.

package com.android.database;

import java.io.File;

import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.util.Log;

public class DatabaseHelper

{
	private static final String TAG  = "DatabaseHelper";
	public static final String  DATABASE_FILE_PATH = "/sdcard";
	public static final String  DATABASE_NAME = "testDatabase";

	private static final String TRACKS_TABLE_CREATE =
		"create table if not exists casecategory (_id INTEGER primary key autoincrement, "
		+ "category_name TEXT not null);";
	
	private SQLiteDatabase database;
	
	public DatabaseHelper()
	{  
		try
		{
//			database = SQLiteDatabase.openDatabase(DATABASE_FILE_PATH + File.separator + DATABASE_NAME, null,SQLiteDatabase.OPEN_READWRITE + SQLiteDatabase.CREATE_IF_NECESSARY);
			database = SQLiteDatabase.openOrCreateDatabase(DATABASE_FILE_PATH + File.separator + DATABASE_NAME, null);
			createTables();
		}

		catch (SQLiteException ex)
		{
//			createTables();
			Log.e(TAG, "error -- " + ex.getMessage(), ex);
		}
		finally
		{
			DatabaseUtil.closeDataBase(database);
		}
	}

	private void createTables()
	{
		try {
			database.execSQL(TRACKS_TABLE_CREATE);
		} catch (SQLException e) {
			e.printStackTrace();
		}
	}

	public void close()
	{
		DatabaseUtil.closeDataBase(database);
	}

	public SQLiteDatabase getReadableDatabase()
	{
		database = SQLiteDatabase.openDatabase(DATABASE_FILE_PATH

				+ File.separator + DATABASE_NAME, null,

				SQLiteDatabase.OPEN_READONLY);
		return database;
	}

	public SQLiteDatabase getWritableDatabase()
	{
		database = SQLiteDatabase.openDatabase(DATABASE_FILE_PATH

				+ File.separator + DATABASE_NAME, null,

				SQLiteDatabase.OPEN_READWRITE);

		return database;
	}
}

package com.android.database;

import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;

public class DatabaseUtil
{
	public static void closeCursor(Cursor cursor)
	{
		if (cursor != null)
		{
			cursor.close();
		}
	}

	public static void closeDataBase(SQLiteDatabase database)
	{
		if (database != null)
		{
			database.close();
		}
	}
}

package com.android.database;

import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;

public class DBAdapter {

	private DatabaseHelper databaseHelper;
	private SQLiteDatabase database;
	
	public DBAdapter open() throws Exception{
		databaseHelper = new DatabaseHelper();
		database = databaseHelper.getWritableDatabase();
		return this;
	}
	
	public boolean insertIntoTable(){
		try {
			database.execSQL("insert into casecategory values('5','v2');");
			return true;
		} catch (Exception e) {
			e.printStackTrace();
			return false;
		}
	}
	
	public Cursor getData(){
		return database.rawQuery("select _id,category_name from casecategory;", null);
	}
	
	public void close() throws Exception{
		database.close();
	}
	
}

package com.android.sdcardDatabase;

import com.android.database.DBAdapter;

import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.widget.Toast;

public class SdCardDatabaseActivity extends Activity {

	/** Called when the activity is first created. */

	DBAdapter dbAdapter;
	
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);


		dbAdapter = new DBAdapter();
		try {
			dbAdapter.open();
		} catch (Exception e) {
			e.printStackTrace();
		}

		setContentView(R.layout.main);
		//		
		boolean flag = dbAdapter.insertIntoTable();
		if(flag==true){
			Toast.makeText(this,"True  ",Toast.LENGTH_LONG).show();
		}else{
			Toast.makeText(this,"False  ",Toast.LENGTH_LONG).show();
		}



		Cursor c = dbAdapter.getData();
		if (c != null ) {
			if  (c.moveToFirst()) {
				do {
					String firstName = c.getString(c.getColumnIndex("category_name"));
					System.out.println("fir ::"+firstName);
				}while (c.moveToNext());
			} 
		}
	}
	
	@Override
	protected void onDestroy() {
		super.onDestroy();
		try {
			dbAdapter.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
}