By Alasdair Allan
Get the hands-on adventure you want to software for the iPhone and iPod contact. With this easy-to-follow advisor, you'll construct a number of pattern functions via studying the best way to use Xcode instruments, the Objective-C programming language, and the center frameworks. earlier than you recognize it, you'll not just have the talents to strengthen your personal apps, you'll understand how to sail throughout the means of filing apps to the iTunes App shop.
Whether you're a developer new to Mac programming or an skilled Mac developer able to take on the iPhone and iPod contact, Learning iPhone Programming offers you a head begin on development market-ready iPhone apps.
* commence utilizing Xcode instantaneously, and how you can paintings with Interface Builder
* benefit from model-view-controller (MVC) structure with Objective-C
* construct a data-entry interface, and how you can parse and shop the information you obtain
* resolve common difficulties whereas construction a number of hard pattern apps
* comprehend the calls for and information of App shop and advert hoc distribution
* Use iPhone's accelerometer, proximity sensor, GPS, electronic compass, and digicam
* combine your app with iPhone's choice pane, media playback, and more
Read or Download Learning iPhone Programming: From Xcode to App Store PDF
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Extra resources for Learning iPhone Programming: From Xcode to App Store
Subclasses Classes can also inherit functionality from an existing class (the parent or base classes, commonly known as the superclass); classes that inherit functionality in this way are referred to as subclasses. This means you can invoke a method of the parent class on an object that is an instance of a subclass of the parent. Subclassing is normally done so that you can extend the functionality of that class with additional methods or data. For example, when writing applications for the iPhone you commonly define a subclass of the UIViewController class to manage your views, instead of using the class directly.
M file. We briefly discussed this in Chapter 3, but let’s take some time to look at it in more detail here. Declaring a Class with the Interface Let’s return to the declaration of the HelloWorldViewController class from Chapter 3, which illustrates a typical class interface. The interface begins with the @interface keyword, followed by the name of the class being declared and ending with a colon followed by the name of the base (or parent) class: @interface HelloWorldViewController : UIViewController 41 An Objective-C class cannot inherit from multiple classes; however, the class it inherits from may in turn inherit from another class.
For instance, in Chapter 5 you’ll see the UITableView class and associated delegate protocols in action. Now let’s examine the applicationDidFinishLaunching method. This is where we can insert our own code to customize the application after it launches. See Chapter 5 and the City Guide application for an example of this sort of customization. view]; [window makeKeyAndVisible]; You make an object perform an operation by sending a message to the object. Messages are enclosed in square brackets. Inside the brackets, the object receiving the message is on the left side and the message (along with any parameters the message requires) is on the right.