book

iOS 7 Programming Fundamentals

by Matt Neuburg

October 2013

Beginner

422 pages

12h 35m

English

O'Reilly Media, Inc.

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VersionsAcknowledgmentsFrom the Programming iOS 4 PrefaceConventions Used in This BookUsing Code ExamplesSafari® Books OnlineHow to Contact Us
Compilation, Statements, and CommentsVariable Declaration, Initialization, and Data TypesStructsPointersArraysOperatorsFlow Control and ConditionsFunctionsPointer Parameters and the Address OperatorFilesThe Standard LibraryMore Preprocessor DirectivesData Type Qualifiers
ObjectsMessages and MethodsClasses and InstancesClass MethodsInstance VariablesThe Object-Based Philosophy
An Object Reference Is a PointerInstance References, Initialization, and nilInstance References and AssignmentInstance References and Memory ManagementMethods and MessagesCalling a MethodDeclaring a MethodNesting Method CallsNo OverloadingParameter ListsWhen Message Sending Goes WrongMessages to nilUnrecognized SelectorsTypecasting and the id TypeMessages as Data TypeC FunctionsCFTypeRefsBlocks
Subclass and SuperclassInterface and ImplementationHeader File and Implementation FileClass MethodsThe Secret Life of Classes
How Instances Are CreatedReady-Made InstancesInstantiation from ScratchInitializationThe designated initializerNib-Based InstantiationPolymorphismThe Keyword selfThe Keyword superInstance Variables and AccessorsKey–Value CodingPropertiesHow to Write an InitializerReferring to Instances
New ProjectThe Project WindowThe Navigator PaneThe Utilities PaneThe EditorThe Project File and Its DependentsThe TargetBuild PhasesBuild SettingsConfigurationsSchemes and DestinationsRenaming Parts of a ProjectFrom Project to Running AppBuild SettingsProperty List SettingsNib FilesAdditional ResourcesCode and the App Launch ProcessFrameworks and SDKs

A Tour of the Nib Editor InterfaceThe Document OutlineCanvasInspectors and LibrariesNib LoadingOutlets and the Nib OwnerCreating an OutletMisconfiguring an OutletDeleting an OutletMore Ways to Create OutletsOutlet CollectionsAction ConnectionsAdditional Initialization of Nib-Based Instances
The Documentation WindowClass Documentation PagesSample CodeOther ResourcesQuick HelpSymbolsHeader FilesInternet Resources
Device Architecture and Conditional CodeVersion ControlEditing Your CodeAutocompletionSnippetsFix-it and Live Syntax CheckingNavigating Your CodeRunning in the SimulatorDebuggingCaveman DebuggingThe Xcode DebuggerUnit TestingStatic AnalyzerCleanRunning on a DeviceObtaining a CertificateObtaining a Development Provisioning ProfileRunning the AppProfile and Device ManagementGauges and InstrumentsLocalizationArchiving and DistributionAd Hoc DistributionFinal App PreparationsIcons in the AppOther IconsLaunch ImagesScreenshotsProperty List SettingsSubmission to the App Store
SubclassingCategoriesSplitting a ClassClass ExtensionsProtocolsInformal ProtocolsOptional MethodsSome Foundation ClassesUseful Structs and ConstantsNSString and FriendsNSDate and FriendsNSNumberNSValueNSDataEquality and ComparisonNSIndexSetNSArray and NSMutableArrayNSSet and FriendsNSDictionary and NSMutableDictionaryNSNullImmutable and MutableProperty ListsThe Secret Life of NSObject
Reasons for EventsSubclassingNotificationsReceiving a NotificationUnregisteringPosting a NotificationNSTimerDelegationCocoa DelegationImplementing DelegationData SourcesActionsThe Responder ChainDeferring ResponsibilityNil-Targeted ActionsSwamped by EventsDelayed Performance
AccessorsKey–Value CodingKVC and OutletsKey PathsArray AccessorsMemory ManagementPrinciples of Cocoa Memory ManagementThe Rules of Cocoa Manual Memory ManagementWhat ARC Is and What It DoesHow Cocoa Objects Manage MemoryAutoreleaseMemory Management of Instance Variables (Non-ARC)Memory Management of Instance Variables (ARC)Retain Cycles and Weak ReferencesUnusual Memory Management SituationsNib Loading and Memory ManagementMemory Management of Global VariablesMemory Management of CFTypeRefsMemory Management of Pointer-to-Void Context InfoPropertiesProperty Memory Management PoliciesProperty Declaration SyntaxProperty Accessor SynthesisDynamic Accessors
Visibility by InstantiationVisibility by RelationshipGlobal VisibilityNotificationsKey–Value ObservingModel–View–Controller

Content preview from iOS 7 Programming Fundamentals

Chapter 1. Just Enough C

Do you believe in C? Do you believe in anything that has to do with me?

—Leonard Bernstein and Stephen Schwartz, Mass

To program for iOS, you need to speak to iOS. Everything you say to iOS will be in accordance with the iOS API. (An API, for application programming interface, is a list or specification of things you are allowed to say when communicating.) Therefore, you will need some knowledge of the C programming language, for two reasons:

Most of the iOS API involves the Objective-C language, and most of your iOS programming will be in the Objective-C language. Objective-C is a superset of C. This means that Objective-C presupposes C; everything that is true of C trickles up to Objective-C. A common mistake is to forget that “Objective-C is C” and to neglect a basic understanding of C.
Some of the iOS API involves C rather than Objective-C. Even in Objective-C code, you often need to use C data structures and C function calls. For example, a rectangle is represented as a CGRect, which is a C struct, and to create a CGRect from four numbers you call CGRectMake, which is a C function. The iOS API documentation will very often show you C expressions and expect you to understand them.

The best way to learn C is to read The C Programming Language (PTR Prentice Hall, 1988) by Brian W. Kernighan and Dennis M. Ritchie, commonly called K&R (Ritchie was the creator of C). It is one of the best computer books ever written: brief, dense, and stunningly precise and ...