Objective-C Fundamentals

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Sample application 225 rentingFor:275.9f atAddress:@"17 Kipling Street, Riccarton"], [CTRentalProperty rentalPropertyOfType:Mansion rentingFor:1500.0f atAddress:@"4 Everglade Ridge, Sumner"], [CTRentalProperty rentalPropertyOfType:Mansion rentingFor:2000.0f atAddress:@"19 Islington Road, Clifton"], nil]; filteredProperties = [[NSMutableArray alloc] initWithArray:allProperties]; Create array for filtered properties } self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Filter" style:UIBarButtonItemStylePlain target:self action:@selector(filterList)]; - (void)filterList { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Filter" message:nil delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:nil]; Add “Filter” button [alert addButtonWithTitle:@"All"]; [alert addButtonWithTitle:@"Properties on Roads"]; [alert addButtonWithTitle:@"Less than $300pw"]; [alert addButtonWithTitle:@"Between $250 and $450pw"]; Create alert for filtered options } [alert show]; [alert release]; - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex { if (buttonIndex != 0) { NSPredicate *predicate; Check user doesn’t click Cancel Create filter predicate switch (buttonIndex) { case 1: predicate = [NSPredicate predicateWithFormat:@"TRUEPREDICATE"]; break; case 2: predicate = [NSPredicate predicateWithFormat:@"address CONTAINS 'Road'"]; break; case 3: predicate = [NSPredicate predicateWithFormat:@"rentalPrice < 300"]; break; case 4:
226 CHAPTER 11 Key-Value Coding and NSPredicate } predicate = [NSPredicate predicateWithFormat: @"rentalPrice BETWEEN { 250, 450 }"]; break; [filteredProperties release]; filteredProperties = [[allProperties filteredArrayUsingPredicate:predicate] retain]; } } [self.tableView reloadData]; - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return [filteredProperties count]; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; Save new filtered values } UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease]; } CTRentalProperty *property = [filteredProperties objectAtIndex:indexPath.row]; int indexOfComma = [property.address rangeOfString:@","].location; NSString *address = [property.address substringToIndex:indexOfComma]; NSString *city = [property.address substringFromIndex:indexOfComma + 2]; cell.textLabel.text = address; NSString *imageName = [cityMappings objectForKey:city]; cell.imageView.image = [UIImage imageNamed:imageName]; cell.detailTextLabel.text = [NSString stringWithFormat:@"Rents for $%0.2f per week", property.rentalPrice]; return cell; - (void)dealloc { [cityMappings release]; [allProperties release]; [filteredProperties release]; } @end [super dealloc]; Get property from filteredProperties Get and display correct city image
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Christopher K. Fairbairn Johannes F
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Objective-C Fundamentals CHRISTOPHE
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PART 1 brief contents GETTING START
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viii CONTENTS 1.5 Compiling the Coi
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x CONTENTS 5.4 Declared properties
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xii CONTENTS PART 3 MAKING MAXIMUM
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preface Having been involved in the
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ACKNOWLEDGMENTS xvii Christopher wo
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ABOUT THIS BOOK xix skills. There
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author online Purchase of Objective
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Part 1 Getting started with Objecti
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4 CHAPTER 1 Building your first iOS
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10 CHAPTER 1 Building your first iO
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Data types, variables, and constant
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30 CHAPTER 2 Data types, variables,
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56 CHAPTER 3 An introduction to obj
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Storing data in collections This ch
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76 CHAPTER 4 Storing data in collec
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Creating classes This chapter cover
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Declaring the interface of a class
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Providing an implementation for a c
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Declared properties 109 - (Property
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Declared properties 111 Let’s bri
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Declared properties 113 Although @s
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Creating and destroying objects 115
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Using the class in the Rental Manag
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Summary 123 a number of rental prop
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Subclassing 125 the only class you
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Adding new instance variables 127 s
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Accessing existing instance variabl
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Overriding methods 131 } return gen
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Overriding methods 133 } "for $%@ p
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Class clusters 135 Figure 6.2 Graph
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Categories 137 This code tells the
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Subclassing in your demo applicatio
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Subclassing in your demo applicatio
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Summary 143 6.8 Summary Object-orie
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Defining a protocol 145 Mastering t
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Implementing a protocol 147 7.2.1 C
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Implementing a protocol 149 Listing
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Important protocols 151 iPhone UIKi
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Important protocols 153 executed. T
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Important protocols 155 Any table v
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Important protocols 157 or in table
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Important protocols 159 For s
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Important protocols 161 Listing 7.1
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Dynamic typing and runtime type inf
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Static vs. dynamic typing 165 If yo
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How messaging works 167 Messages ar
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How messaging works 169 8.3.2 Handl
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Runtime type information 171 The if
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Runtime type information 173 8.4.3
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Page 200 and 201: Memory management This chapter cove
Page 202 and 203: Reference counting 179 Figure 9.1 A
Page 204 and 205: Reference counting 181 the object i
Page 206 and 207: Reference counting 183 Keep yoursel
Page 208 and 209: Autorelease pools 185 Ideally, you
Page 210 and 211: Autorelease pools 187 With knowledg
Page 212 and 213: Autorelease pools 189 i * 1000 + j]
Page 214 and 215: Memory zones 191 Memory zones have
Page 216 and 217: Responding to low-memory warnings 1
Page 222 and 223: Summary 199 addObserver:selector:na
Page 224 and 225: Part 3 Making maximum use of framew
Page 226 and 227: Error and exception handling This c
Page 228 and 229: NSError—handling errors the Cocoa
Page 230 and 231: Creating NSError objects 207 chapte
Page 232 and 233: Creating NSError objects 209 10.2.2
Page 234 and 235: Summary 211 10.3.2 Catching excepti
Page 236 and 237: Making your objects KVC-compliant 2
Page 238 and 239: Making your objects KVC-compliant 2
Page 240 and 241: Handling special cases 217 This que
Page 242 and 243: Filtering and matching with predica
Page 250 and 251: Summary 227 The core of the logic o
Page 252 and 253: Core Data history 229 Structured Qu
Page 254 and 255: Core Data objects 231 In Xcode you
Page 256 and 257: Core Data resources 233 careful to
Page 258 and 259: Building the PocketTasks applicatio
Page 274 and 275: Beyond the basics 251 How do you us
Page 276 and 277: Beyond the basics 253 All you do is
Page 278 and 279: Beyond the basics 255 attributeName
Page 280 and 281: Blocks and Grand Central Dispatch T
Page 282 and 283: The syntax of blocks 259 What if yo
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Page 286 and 287: The syntax of blocks 263 } [super d
Page 288 and 289: Performing work asynchronously 265
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Summary 275 more to learn about GCD
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Building an application, complete w
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Understanding NSLog 279 Figure 14.3
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Bringing memory leaks under control
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Bringing memory leaks under control
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Detecting zombies 285 (and the appl
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Summary 287 and its ease of use and
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Preparing your iOS device for devel
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Preparing your iOS device for devel
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appendix B The basics of C Througho
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Variable naming conventions 295 As
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Expressions 297 Table B.3 Relationa
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Expressions 299 B.2.4 Assignment op
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Conditional statements 301 based on
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Conditional statements 303 The gene
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Looping statements 305 Not as strai
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Looping statements 307 One importan
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Looping statements 309 As in a do l
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Summary 311 CONTINUE The continue s
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A short history of Objective-C 313
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The iPhone SDK: Safari 315 C.2 Alte
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The iPhone SDK: Safari 317 C.3.2 ha
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The iPhone SDK: Safari 319 It’s i
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Scripting languages: Lua and Ruby 3
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Mono (.NET) 323 the iOS platform. F
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Summary 325 Xamarin announced a fol
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index Symbols ^ operator 298 - oper
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INDEX 329 application-specific quer
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INDEX 331 collections (continued) e
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INDEX 333 E e character 35 editButt
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INDEX 335 iOS Developer account 9 i
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INDEX 337 mutableCopyWithZone 190 M
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INDEX 339 Organizer window 291 over
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INDEX 341 setFlag 164 setNilValueFo
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INDEX 343 vardic method 75 variable
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