public static final String TAG = DBHelper.class.getSimpleName();
    public static final int DATEBASE_VERSION = 1;
    public static final String DATEBASE_NAME = "ContactDB";
    public static final String TABLE_CONTACT = "Contact";

    public static final String KEY_ID = "ID";
    public static final String KEY_NAME = "Name";
    public static final String KEY_LOGIN = "Login";
    public static final String KEY_PASS = "Pass";
    public static int countUser = 0;

    public DBHelper(Context context) {
        super(context, DATEBASE_NAME, null, DATEBASE_VERSION);
    }

    public static final String CREATE_TABLE_USERS = "CREATE TABLE " + TABLE_CONTACT + " ( "
            + KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, "
            + KEY_NAME + " TEXT, "
            + KEY_LOGIN + " TEXT, "
            + KEY_PASS + " TEXT);";


    @Override
    public void onCreate(SQLiteDatabase db) {
        db.execSQL(CREATE_TABLE_USERS);
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        db.execSQL("DROP TABLE IF EXISTS " + TABLE_CONTACT);

        onCreate(db);
    }

    @Override
    public void addContact(Contact contact) {
        SQLiteDatabase db = this.getWritableDatabase();

        ContentValues value = new ContentValues();
        value.put(KEY_NAME, contact.getName());
        value.put(KEY_LOGIN, contact.getLogin());
        value.put(KEY_PASS, contact.getPass());

        Long id = db.insert(TABLE_CONTACT, null, value);
        db.close();

        Log.d(TAG, "user inserted" + id);
        countUser++;
    }