public static void clearDatabase(Context context) {
CategoryDataSource categoryDataSource = new CategoryDataSource(context);
categoryDataSource.open();
categoryDataSource.clearCategory();
categoryDataSource.close();
MyListDataSource myListDataSource = new MyListDataSource(context);
myListDataSource.open();
myListDataSource.clearMyList();
myListDataSource.close();
BookDataSource bookDataSource = new BookDataSource(context);
bookDataSource.open();
bookDataSource.clearBook();
bookDataSource.close();
}
