实例介绍
【实例简介】oc基础教程
【实例截图】
【核心代码】
Table of Contents The Story behind the Succinctly Series of Books.................................................................................. 8 Introduction ............................................................................................................................................... 10 The Objective-C Language .................................................................................................................... 10 Sample Code ......................................................................................................................................... 11 Setting Up .............................................................................................................................................. 11 Installation .............................................................................................................................................. 12 Creating an Application .......................................................................................................................... 12 Getting to Know the Xcode IDE ............................................................................................................. 14 Editing Files .........................................................................................................................................15 Compiling Code ...................................................................................................................................15 Summary................................................................................................................................................ 16 Chapter 1 Hello, Objective-C................................................................................................................... 17 Creating a Class..................................................................................................................................... 17 Components of a Class.......................................................................................................................... 18 Defining Methods ................................................................................................................................... 19 Instantiating Objects............................................................................................................................... 20 Calling Methods ..................................................................................................................................... 21 Adding Method Parameters ................................................................................................................... 21 Defining Properties ................................................................................................................................ 22 Summary................................................................................................................................................ 23 Chapter 2 Data Types............................................................................................................................... 24 Displaying Values................................................................................................................................... 24 Primitive Data Types .............................................................................................................................. 25 Booleans ..............................................................................................................................................25 Chars....................................................................................................................................................26 Short Integers ......................................................................................................................................26 “Normal” Integers .................................................................................................................................26 Long Integers .......................................................................................................................................27 Floats ...................................................................................................................................................27 Doubles................................................................................................................................................27 Structs ..................................................................................................................................................28 Arrays...................................................................................................................................................28 5 Void ......................................................................................................................................................30 nil and NULL ........................................................................................................................................31 Primitive Data Type Summary ............................................................................................................... 31 Foundation Data Structures ................................................................................................................... 31 NSNumber ...........................................................................................................................................31 NSDecimalNumber ..............................................................................................................................32 NSString...............................................................................................................................................34 NSMutableString ..................................................................................................................................35 NSArray ...............................................................................................................................................36 NSMutableArray...................................................................................................................................38 NSSet and NSMutableSet ...................................................................................................................39 NSDictionary and NSMutableDictionary ..............................................................................................41 The id Data Type..................................................................................................................................42 The Class Data Type ...........................................................................................................................43 Foundation Data Structures Summary.................................................................................................43 Chapter 3 Properties................................................................................................................................ 45 Declaring Properties .............................................................................................................................. 45 Implementing Properties ........................................................................................................................ 45 Instance Variables.................................................................................................................................. 46 Customizing Accessors........................................................................................................................47 Dot Syntax............................................................................................................................................48 Summary................................................................................................................................................ 49 Chapter 4 Memory Management............................................................................................................. 50 Manual Memory Management ............................................................................................................... 50 Auto-Releasing Objects .......................................................................................................................55 Manual Retain-Release Attributes .......................................................................................................56 Automatic Reference Counting .............................................................................................................. 57 ARC Attributes .....................................................................................................................................58 Summary................................................................................................................................................ 59 Chapter 5 Methods................................................................................................................................... 60 Instance vs. Class Methods ................................................................................................................... 60 The super Keyword................................................................................................................................ 61 Initialization Methods ............................................................................................................................. 61 Class Initialization ................................................................................................................................63 6 Deallocation Methods ............................................................................................................................ 64 Deallocation in MMR............................................................................................................................64 Deallocation in ARC.............................................................................................................................65 Private Methods ..................................................................................................................................... 65 Selectors ................................................................................................................................................ 67 Method Names and Selectors .............................................................................................................69 Performing Selectors ...........................................................................................................................70 Checking for the Existence of Selectors ..............................................................................................70 Using Selectors....................................................................................................................................71 Summary................................................................................................................................................ 73 Chapter 6 Categories and Extensions ................................................................................................... 74 Categories.............................................................................................................................................. 74 Protected Methods...............................................................................................................................77 Caveats ................................................................................................................................................80 Extensions.............................................................................................................................................. 80 Private Methods ...................................................................................................................................82 Summary................................................................................................................................................ 83 Chapter 7 Protocols ................................................................................................................................. 84 Creating a Protocol ................................................................................................................................ 84 Adopting a Protocol................................................................................................................................ 85 Advantages of Protocols ........................................................................................................................ 86 Protocols As Pseudo-Types ................................................................................................................... 87 Dynamic Conformance Checking ........................................................................................................88 Forward-Declaring Protocols ................................................................................................................. 89 Summary................................................................................................................................................ 90 Chapter 8 Exceptions and Errors ........................................................................................................... 91 Exception Handling ................................................................................................................................ 91 The NSException Class.......................................................................................................................92 Generating Exceptions.........................................................................................................................92 Catching Exceptions ............................................................................................................................93 Throwing Exceptions............................................................................................................................94 Error Handling........................................................................................................................................ 96 The NSError Class...............................................................................................................................97 Error Domains......................................................................................................................................97 7 Capturing Errors...................................................................................................................................98 Custom Errors......................................................................................................................................99 Summary.............................................................................................................................................. 100 Chapter 9 Blocks.................................................................................................................................... 102 Creating Blocks.................................................................................................................................... 102 Parameter-less Blocks.......................................................................................................................103 Using Blocks as Callbacks................................................................................................................... 103 Storing and Executing Blocks .............................................................................................................. 105 Parameter-less Block Variables .........................................................................................................106 Working with Variables......................................................................................................................... 106 Blocks Are Closures...........................................................................................................................107 Mutable Block Variables.....................................................................................................................108 Defining Methods that Accept Blocks ................................................................................................109 Summary.............................................................................................................................................. 110 Conclusion................................................................................................................................................111 iOS Succinctly.......................................................................................................................................111
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