how to store image from url to sqlite?

sorry, i'm new in adnroid programming , i try combination JSONParse and sqlite, when i store (insert) data to sqlite my column image = null (not save in sqlite), how to get image from url and store(insert) to sqlite ?

this is my code main activity

public class MainActivity extends Activity {

    Button Btngetdata;

    // URL to get JSON Array
    private static String url = "http://ift.tt/176xioY";

    private String IMAGEURL = "http://ift.tt/1zDPsW1";

    private byte[] logoImage;

    // JSON Node Names
    private static final String TAG_DATA = "data";
    public static final String TAG_IDT = "idt";
    public static final String TAG_IDL = "idl";
    public static final String TAG_NAMA = "nama";
    public static final String TAG_ALAMAT = "alamat";
    public static final String TAG_IMAGE = "image";

    JSONArray user = null;

    private DatabaseHandler databaseHelper;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        databaseHelper = new DatabaseHandler(MainActivity.this);

        Btngetdata = (Button) findViewById(R.id.getdata);
        Btngetdata.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                new JSONParse().execute();
            }
        });
    }

    private class JSONParse extends AsyncTask<String, String, JSONObject> {
        final String TAG = "AsyncTaskParseJson.java";
        private ProgressDialog pDialog;

        @Override
        protected void onPreExecute() {
            super.onPreExecute();

            pDialog = new ProgressDialog(MainActivity.this);
            pDialog.setMessage("Getting Data ...");
            pDialog.setIndeterminate(false);
            pDialog.setCancelable(true);
            pDialog.show();
        }

        @Override
        protected JSONObject doInBackground(String... args) {
            JSONParser jParser = new JSONParser();
            // Getting JSON from URL
            JSONObject json = jParser.getJSONFromUrl(url);
            return json;
        }

        @Override
        protected void onPostExecute(JSONObject json) {
            pDialog.dismiss();
            try {
                // Getting JSON Array
                user = json.getJSONArray(TAG_DATA);
                // loop through all users
                for (int i = 0; i < user.length(); i++) {

                    JSONObject c = user.getJSONObject(i);
                    // Storing JSON item in a Variable
                    String idt = c.getString(TAG_IDT);
                    String idl = c.getString(TAG_IDL);
                    String nama = c.getString(TAG_NAMA);
                    String alamat = c.getString(TAG_ALAMAT);
                    String image = c.getString(TAG_IMAGE);

                    // code for get image url and make byte
                    logoImage = getLogoImage(IMAGEURL+image);

                    databaseHelper.saveCategoryRecord(idt, idl, nama, alamat, image, logoImage);

                    // Set JSON Data in TextView
                //  uid.setText(idt);
                    //name1.setText(name);
                    // email1.setText(email);
                    // show the values in our logcat
                    Log.e(TAG, "nama >>>> " + idt + "  alamat>>>>> " + nama);

                }
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
    }
    // try get url and make byte
    private byte[] getLogoImage(String geturl) {
        try {
            URL imageUrl = new URL(geturl);
            URLConnection ucon = imageUrl.openConnection();

            InputStream is = ucon.getInputStream();
            BufferedInputStream bis = new BufferedInputStream(is);

            ByteArrayBuffer baf = new ByteArrayBuffer(500);
            int current = 0;

            while ((current = bis.read()) != -1) {
                baf.append((byte) current);
            }

            return baf.toByteArray();
        } catch (Exception e) {
            Log.d("ImageManager", "Error: " + e.toString());
        }
        return null;
    }

}

and this is mydatabase handler

public class DatabaseHandler {
    private static final int DATABASE_VERSION = 1;
    private static final String DATABASE_NAME = "bantul";
    private static final String TABLE_NAME = "tb_alldata";
    public static final String TAG_IDT = "idt";
    public static final String TAG_IDL = "idl";
    public static final String TAG_NAMA = "nama";
    public static final String TAG_ALAMAT = "alamat";
    public static final String TAG_GAMBAR = "gambar";
    public static final String TAG_FILE_IMAGE = "file_image";

    Category openHelper;
    private SQLiteDatabase database;

    public DatabaseHandler(Context context){
        openHelper = new Category(context);
        database = openHelper.getWritableDatabase();
    }
    public void saveCategoryRecord(String idt, String idl, String nama, String alamat, String gambar, byte[] logoImage) {
        ContentValues contentValues = new ContentValues();
        contentValues.put(TAG_IDT, idt);
        contentValues.put(TAG_IDL, idl);
        contentValues.put(TAG_NAMA, nama);
        contentValues.put(TAG_ALAMAT, alamat);
        contentValues.put(TAG_GAMBAR, gambar);
        contentValues.put(TAG_FILE_IMAGE, logoImage);

        database.insert(TABLE_NAME, null, contentValues);
        }
    public Cursor getTimeRecordList() {
        return database.rawQuery("select * from " + TABLE_NAME, null);
        }

    private class Category extends SQLiteOpenHelper {

        public Category(Context context) {
            // TODO Auto-generated constructor stub
            super(context, DATABASE_NAME, null, DATABASE_VERSION);
        }

        @Override
        public void onCreate(SQLiteDatabase db) {
            // TODO Auto-generated method stub
            db.execSQL("CREATE TABLE " + TABLE_NAME + "( "
                    + TAG_IDT + " INTEGER PRIMARY KEY, "
                    + TAG_IDL + " INTEGER, "+ TAG_NAMA + " TEXT, "+ TAG_ALAMAT + " TEXT, "+ TAG_GAMBAR + " TEXT, "
                    + TAG_FILE_GAMAR + " BLOB, )" );
        }

        @Override
        public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
            // TODO Auto-generated method stub
            db.execSQL("DROP TABLE IF EXISTS"+ TABLE_NAME);
            onCreate(db);
        }

    }