iOS 6 Recipes: A Problem-Solution Approach
iOS 6 Recipes: A Problem-Solution Approach is your code reference and guide to developing solutions on iPad, iPhone, and other iOS 6 SDK devices and platforms. This book provides in-depth code samples and discussions for scenarios that developers face every day. You'll find numerous examples of real-world cases that will enable you to build fully functional applications quickly and efficiently.
The recipes included in this book are wide in scope, and have been geared toward the professional developer. You'll find clear and concise code samples accompanying each recipe, and will be presented with cutting-edge solutions that bring forth the best that the iOS 6 SDK has to offer. The recipes include:
- Working with Autolayout to build flexible user interfaces that adapts to different screen sizes
- Building applications that incorporate multimedia
- Building location-aware apps
- Understanding best practices for application design and development
You'll find iOS 6 Recipes: A Problem-Solution Approach to be an indispensable reference for all of your iOS development.
What you’ll learn
- How to make your apps truly stand out with multimedia
- How to integrate social network services like Twitter and Facebook into you apps
- How to enhance your game apps with GameCenter
- How to develop powerful apps with the latest Xcode
- How to use Table Views and Collection Views in combination with Core Data to build powerful data-driven apps
- How to build beautiful location-based apps with the new map engine
Who this book is for
This book is intended for developers familiar with the Objective-C programming language and with an interest in developing apps for the iPhone and iPad. While a basic knowledge of Objective-C is expected, developers at all levels of app development will benefit from this book.
Recipe 2.1.) The main reason being that Interface Builder won’t let you setup constraints that are unsatisfiable or ambiguous. For example, you can’t remove or change existing constraints in such a way that violates correctness. This can be a frustrating experience, but it forces you to learn Autolayout up front and not in time-consuming debug sessions (which is worse). However, there are situations where you can’t define your Autolayout constraints in Interface Builder, for example if you create
using the Objective-C class template. On the next screen, enter MainTableViewController as the class name and select UIViewController as the subclass. It’s important that you also check the With XIB for user interface option so that Xcode creates a user interface file for your view controller. Note Some may find it more convenient to create a subclass of UITableViewController, as you are immediately given a UITableView, as well as some of the methods required to use it. The downside of this
animation (fading opacity in or out) by use of the -setSelected:animated: action. multipleSelectionBackgroundView: This UIView acts just like the selectedBackgroundView but is used for when a UITableView is enabled to allow the selection of multiple rows. accessoryView: As discussed earlier, this allows you to create entirely different views for a row’s accessory, so you could implement your own custom display and behavior beyond the preset values. editingAccessoryView: This is similar to
the item in question; in your Mail application, you can press the Edit button in the upper-rightcorner to allow the selection of multiple messages for deletion, movement, and other functions. Both of these functionalities are based on the concept of editing a UITableView. The first thing you can look at is the idea of putting your UITableView into editing mode, because for your users to use your editing functionality, they need to access it. Do this by adding an Edit button to the top-right
App Details scene. Go back to the storyboard editor and select the view controller object at the bottom of the App Details scene (see Figure 1-51). Figure 1-51. Selecting the view controller object of a scene 42 CHAPTER 1: Application Recipes With the view controller object selected, go to the Identity inspector and set the Class attribute to AppDetailsViewController, as Figure 1-52 demonstrates. Attaching a custom view controller class to a scene .xib files, using the Assistant Editor