Gold Challenge: Favorite Items
by Christian Keur,
Aaron Hillegass
iOS Programming: The Big Nerd Ranch Guide, 7th Edition
- Title Page
- Acknowledgments
- Table of Contents
- Introduction
- 1. A Simple iOS Application
- 2. The Swift Language
- 3. Views and the View Hierarchy
- 4. View Controllers
- 5. Programmatic Views
- 6. Text Input and Delegation
- 7. Internationalization and Localization
- 8. Debugging
- 9. UITableView and UITableViewController
- 10. Subclassing UITableViewCell
- 11. Stack Views
- 12. Navigation Controllers
- 13. Saving, Loading, and Scene States
- Codable
- Property Lists
- Error Handling
- Application Sandbox
- Scene States and Transitions
- Persisting the Items
- Bronze Challenge: Throwing Errors
- Gold Challenge: Support Multiple Windows
- For the More Curious: Manually Conforming to Codable
- For the More Curious: Scene State Transitions
- For the More Curious: The Application Bundle
- 14. Presenting View Controllers
- 15. Camera
- Displaying Images and UIImageView
- Taking Pictures and UIImagePickerController
- Creating ImageStore
- Giving View Controllers Access to the Image Store
- Creating and Using Keys
- Persisting Images to Disk
- Loading Images from the ImageStore
- Bronze Challenge: Editing an Image
- Silver Challenge: Removing an Image
- For the More Curious: Navigating Implementation Files
- 16. Adaptive Interfaces
- 17. Extensions and Container View Controllers
- 18. Custom Controls
- 19. Controlling Animations
- 20. Web Services
- Starting the Photorama Application
- Building the URL
- Sending the Request
- Modeling the Photo
- JSON Data
- Enumerations and Associated Values
- Passing the Photos Around
- Downloading and Displaying the Image Data
- The Main Thread
- Bronze Challenge: Printing the Response Information
- Silver Challenge: Fetch Recent Photos from Flickr
- For the More Curious: HTTP
- 21. Collection Views
- 22. Core Data
- 23. Core Data Relationships
- 24. Accessibility
- 25. Afterword
- Index
Allow the user to select favorite items by swiping right on them. You will want to use the table view edit actions to accomplish this. This is a bit involved; you will need to:
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Add an isFavorite property to the Item class.
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Investigate the UITableViewDataSource for a way to add edit actions to a row, then implement this to toggle the isFavorite property on the item.
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Display whether an item is favorited. This could be done by appending (Favorite) to the item’s name on the textLabel property.
Bonus: Implement a way to show only favorited items. This could be done with an additional button in the table view header view that toggles which items are displayed.
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