By Jeff LaMarche, David Mark, Jack Nutting
The authors of the bestselling starting iPhone three improvement are again, with a similar first-class fabric thoroughly up to date for iOS four and written from the floor up utilizing the newest model of Apple's Xcode three. All resource code has been up to date to exploit the most recent Xcode templates and present APIs, and all-new screenshots exhibit Xcode three in action.
Beginning iPhone four improvement is an entire direction in iOS improvement. You’ll grasp options that paintings on iPhone, iPad, and iPod contact. we begin with the fundamentals, exhibiting you the way to obtain and set up the instruments you'll desire, and the way to create your first uncomplicated program. subsequent you’ll discover ways to combine all of the interface components iOS clients have come to grasp and love, reminiscent of buttons, switches, pickers, toolbars, and sliders. You’ll grasp a number of layout styles, from the easiest unmarried view to complicated hierarchical drill-downs. The complicated paintings of desk development should be demystified, and you’ll examine strategies to avoid wasting and retrieve your info utilizing SQLite, iPhone’s integrated database administration method and middle facts, the traditional for patience that Apple delivered to iOS with the discharge of SDK 3.
And there’s even more! You’ll discover ways to draw utilizing Quartz 2nd and OpenGL ES, upload multitouch gestural help (pinches and swipes) on your purposes, and paintings with the digicam, photograph library, accelerometer, and integrated GPS. You’ll notice the effective issues of software personal tastes and how to localize your apps for a number of languages. You'll additionally methods to use the recent concurrency APIs integrated in iOS four, and make powerful multithreaded purposes utilizing Grand vital Dispatch.
* The iPhone four replace to the best-selling and so much suggested booklet for Cocoa contact developers
* Written in an available, easy-to-follow style
* jam-packed with helpful assistance and methods that can assist you turn into an iOS seasoned
<h3>What you’ll learn</h3> * every thing you want to understand to strengthen your individual best-selling iPhone and iPad apps
* top practices for optimizing your code and providing nice person reports
* find out how to create “universal” apps for either iPhone and iPad
<h3>Who this ebook is for</h3>
a person who desires to begin constructing for iPhone, iPad, and iPod contact.
Read Online or Download Beginning iPhone 4 Development: Exploring the iOS SDK PDF
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Additional resources for Beginning iPhone 4 Development: Exploring the iOS SDK
When you open a nib file from the Groups & Files pane, Interface Builder will scan your project header files for occurrences of this keyword and will allow you to make connections from your code to the nib based on these (and only these) variables. In the “Connecting Outlets” section later in this chapter, you’ll see how to actually make the connection between an outlet and a user interface object in Interface Builder. OUTLET CHANGES In the first version of the book, we placed the IBOutlet keyword before the instance variable declaration, like this: IBOutlet UIButton *myButton; Since that time, Apple’s sample code has been moving toward placing the IBOutlet keyword in the property declaration, like this: @property (nonatomic, retain) IBOutlet UIButton *myButton; Both mechanisms are supported, and for the most part, there is no difference in the way things work based on where you put the keyword.
In this case, File’s Owner represents our application’s sole instance of the Button_FunView Controller class. When we drag from the button’s event to the File’s Owner icon, we are telling Interface Builder to call the CHAPTER 3: Handling Basic Interaction selected method when the specified event occurs. So when the user touches up inside the button, the Button_FunViewController class’s buttonPressed: method will be called. Do this same sequence with the other button and then save. Now, any time the user taps one of these buttons, our buttonPressed: method will get called.
Control-dragging to connect outlets With the cursor still over the label, let go of the mouse button, and a small gray menu like the one shown in Figure 3–11 should pop up. Select statusText from the gray menu. By control-dragging from File’s Owner to an interface object, you are telling Interface Builder that you want to connect one of the File’s Owner’s outlets to this object when the nib file is loaded. In this case, the file’s owner is the class Button_FunViewController, and the Button_FunViewController outlet we are interested in is statusText.