- Foundation
- UIKit
- CoreData
This assignment has been about adding persistence to an existent app. Initially the app presented a hard coded array of sandwiches and, in case a new element was added, there was no data persistence between relaunches.
First of all, the filter sauce amount selection has been handled by using UserDefaults to save user's last selection. On the other hand, the original array has been replaced for a JSON file whose elements' are automatically saved to CoreData on the first launch when there is still no data. Using a property list object could have been an alternative to the JSON file. Moreover any new sandwich can now be stored in CoreData keeping the same original functionality. Deleting an element by a left swipe removes the selected sandwich from the table-view array and CoreData as well.
The table-view can be sorted by name, sauce amount or rating and the selection being toggled from a menu bar button. Sandwich sorting persists accordingly between relaunches and even when any filter is applied.
Finally, rating is an additional feature that allows any sandwich to be rated on creation and to be updated by a contextual menu, presented after a long tap on the respective cell.
Those are the most relevant screenshots of the app.
