By Bill Dudney, Christopher Adamson
Desired to boost an iPhone program, yet had by no means performed any iPhone or maybe Mac programming prior to. first-class step by step directions and targeted examples. good demonstrated pattern code and examples that have been strangely deep and necessary. cannot say sufficient approximately how strong this booklet particularly is. Took me from being a rookie to a person who can now successfully advance - and feature adequate heritage to exploit the Apple reference fabric to get to the following point.
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Additional info for iPhone SDK development: building iPhone applications
Instead you described the view in the nib file with Interface Builder. In your Hello iPhone project there was no model because the app was really simple and did not need one, but there was a view controller. Every app on the iPhone will have at least one view controller. View controllers come in many flavors. In this chapter you’ll learn more about view controllers in general. You’ll also learn about three specific types of view controllers in Chapter 4, Table Views, on page 66, Chapter 5, Navigation, on page 90, and Chapter 6, Tab Bar Controllers, on page 103.
Resources — Resources are non-code files that are nevertheless needed by your application at runtime. Such files might include graphics or sound files, localization dictionaries, and the like. plist file includes basic settings for the application including its icon and name. The resources also contain the XIB files that contain the "freeze-dried" GUI components used to present the user interface. xib file with Interface Builder in the last chapter. • Frameworks — These represent the frameworks that your application uses.
As is usually the case with Cocoa objects created in code, we first allocate memory for the object with alloc, and then initialize its contents. To create the string substitution, we can use a format string and substitute in the user value. The leading @ lets us quickly allocate a static NSString for the format, which is just Hello %@. 5 Here, we insert the value of userName. • With the format string prepared, we set it on the label in 5. We do this by getting the helloLabel instance variable, and setting its text property.