View Basics
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
Recall from Chapter 1 that views are objects that are visible to the user, like buttons, text fields, and sliders. View objects make up an application’s UI. A view:
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is an instance of UIView or one of its subclasses
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knows how to draw itself
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can handle events, like touches
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exists within a hierarchy of views whose root is the application’s window
Let’s look at the view hierarchy in greater detail.
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