Describe new things in iOS 5 and Xcode 4

1. iOS5

3. Xcode4
2012.1.18

4.
EungShik

5. Kim

6. WHAT’S

7. NEW

8. IN

9. IOS5

11. Xcode Tools
Instruments

12. Xcode Tools Language Objective-C
Instruments

13. Xcode Tools Language
Objective-C
Instruments
Frameworks
Foundation
UIKit
Core Data
Core Location
(etc)

14. Xcode Tools Language
Objective-C
Instruments
Frameworks Patterns
Foundation
UIKit
Core Data
Core Location
(etc)
MVC
Delegation
Target-Action

15. iOS

16. Development

17. Process

18.
testing

19. /

20. debugging

21. /

22. provisioning

23. /

24. app

25. submission
Xcode Tools Language
Objective-C
Instruments
Frameworks Patterns
Foundation
UIKit
Core Data
Core Location
(etc)
MVC
Delegation
Target-Action

26. iOS

27. Development

28. Process
Tools Language
Frameworks Patterns

29. iOS

30. Development

31. Process
Tools Language
Frameworks Patterns
Xcode 4.2
LLVM 3.0 Compiler
ARC Support
Storyboarding

32. iOS

33. Development

34. Process
Tools Language
Frameworks Patterns
Enhancements
for ARC

35. iOS

36. Development

37. Process
Tools Language
Frameworks Patterns
Twitter
Newsstand Kit
UIKit
Foundation
No Siri Support (Jan 2012)

38. iOS

39. Development

40. Process
Tools Language
Frameworks Patterns

41. iOS

42. Device

43. Support

44. iOS

45. Device

46. Support
iPhone 4S
iPhone 4

47. iOS

48. Device

49. Support
iPhone 4S
iPhone 4
iPhone 3GS
iPod Touch 3G/4G

50. iOS

51. Device

52. Support
iPhone 4S
iPhone 4
iPhone 3GS
iPod Touch 3G/4G
iPad
iPad 2

53. INTRODUCTION

54. TO

55. ARC

56. INTRODUCTION

57. TO

58. ARC
AUTOMATIC

59. REFERENCE

60. COUNTING

62. ARC

63. Concept

64. ARC

65. Concept
MyClass *myObj = [[MyClass alloc] init];
[myObj someMethod]; // etc.
[myObj release];

66. ARC

67. Concept

68. ARC

69. Concept
myObj
MyClass *myObj = [[MyClass alloc] init];
[myObj someMethod]; // etc.
[myObj release];

70. ARC

71. Concept
myObj dangling pointer
MyClass *myObj = [[MyClass alloc] init];
[myObj someMethod]; // etc.
[myObj release];

72. ARC

73. Concept
myObj dangling pointer
MyClass *myObj = [[MyClass alloc] init];
[myObj someMethod]; // etc.
[myObj release];
[myObj someMethod]; // Boom!

74. ARC

75. Concept
myObj dangling pointer
MyClass *myObj = [[MyClass alloc] init];
[myObj someMethod]; // etc.
[myObj release];
[myObj someMethod]; // boom!

76. ARC

77. Concept
myObj dangling pointer
MyClass *myObj = [[MyClass alloc] init];
[myObj someMethod]; // etc.
[myObj release];
[myObj someMethod]; // boom!
myObj2
MyClass *myObj2 = [[MyClass alloc] init];
[myObj2 someMethod]; // etc.
!

78. ARC

79. Concept
myObj dangling pointer
MyClass *myObj = [[MyClass alloc] init];
[myObj someMethod]; // etc.
[myObj release];
[myObj someMethod]; // boom!
memory leak

80. ARC

81. Concept
MyClass *myObj = [[MyClass alloc] init];
[myObj someMethod]; // etc.
[myObj release];

82. WHAT

83. ARC

84. MANAGE

85. WHAT

86. ARC

87. DOES

88. AND

89. DOESN’T

90. MANAGE

91. WHAT

92. ARC

93. DOES

94. AND

95. DOESN’T

96. MANAGE
myObj
MyClass *myObj = [[MyClass alloc] init];

97. WHAT

98. ARC

99. DOES

100. AND

101. DOESN’T

102. MANAGE
strong references
myObj msg
MyClass *myObj = [[MyClass alloc] init];
NSString *msg = [NSString stringWithFormat:@Hello];

103. WHAT

104. ARC

105. DOES

106. AND

107. DOESN’T

108. MANAGE
strong references
myObj msg
MyClass *myObj = [[MyClass alloc] init];
NSString *msg = [NSString stringWithFormat:@Hello];

109. WHAT

110. ARC

111. DOES

112. AND

113. DOESN’T

114. MANAGE
strong references
myObj msg
MyClass *myObj = [[MyClass alloc] init];
NSString *msg = [NSString stringWithFormat:@Hello];
msg = nil;

115. WHAT

116. ARC

117. DOES

118. AND

119. DOESN’T

120. MANAGE
NSString *msg = [NSString stringWithFormat:@Hello];
msg = nil;

121. ARC

122. IS

123. NOT

124. GABAGE

125. COLLECTION

126. ARC

127. IS

128. NOT

129. GABAGE

130. COLLECTION
GARBAGE COLLECTION
runtime
requires garbage collector
nondeterministic

131. ARC

132. IS

133. NOT

134. GABAGE

135. COLLECTION
GARBAGE COLLECTION
runtime
requires garbage collector
nondeterministic
ARC
compile-time
no charge to runtime model
predictable

136. THE

137. RULE

138. OF

139. ARC

140. #1:

141. DON’T

142. CALL

143. MEMORY

144. MANAGEMENT

145. METHOD

146. #1:

147. DON’T

148. CALL

149. MEMORY

150. MANAGEMENT

151. METHOD
no retain

152. #1:

153. DON’T

154. CALL

155. MEMORY

156. MANAGEMENT

157. METHOD
no retain
no release
no autorelease

158. #1:

159. DON’T

160. CALL

161. MEMORY

162. MANAGEMENT

163. METHOD
no retain
no release
no autorelease
no retainCount

164. #1:

165. DON’T

166. CALL

167. MEMORY

168. MANAGEMENT

169. METHOD
no retain
no release
no autorelease
no retainCount
no dealloc
- (void)dealloc
{
[imageIcon release];
[name release];
[price release];
[super dealloc];
}

170. #1:

171. DON’T

172. CALL

173. MEMORY

174. MANAGEMENT

175. METHOD
no retain
no release
no autorelease
no retainCount
no dealloc

176. #2:

177. DON’T

178. USE

179. NSAUTORELEASEPOOL

181. #2:

182. DON’T

183. USE

184. NSAUTORELEASEPOOL

185.
NSAutoReleasePool

186. replaced

187. by

188. @autoreleasepool

189.
block

191. #2:

192. DON’T

193. USE

194. NSAUTORELEASEPOOL

195.
NSAutoReleasePool

196. replaced

197. by

198. @autoreleasepool

199.
block

200.
int main(int argc, char *argv[])
{
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
int retVal = UIApplicationMain(argc, argv, nil, nil);
[pool release];
return retVal;
}

201. #2:

202. DON’T

203. USE

204. NSAUTORELEASEPOOL

205.
NSAutoReleasePool

206. replaced

207. by

208. @autoreleasepool

209.
block

210.
int main(int argc, char *argv[])
{
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
int retVal = UIApplicationMain(argc, argv, nil, nil);
[pool release];
return retVal;
}

211. #2:

212. DON’T

213. USE

214. NSAUTORELEASEPOOL

215.
NSAutoReleasePool

216. replaced

217. by

218. @autoreleasepool

219.
block

220.
int main(int argc, char *argv[])
{
@autoreleasepool {
return UIApplicationMain(argc, argv, nil,
NSStringFromClass([AppDelegate class]));
}
}

221. #3:

222. NO

223. OBJECT

224. REFERENCES

225. IN

226. C

227. STRUCTS

228. #3:

229. NO

230. OBJECT

231. REFERENCES

232. IN

233. C

234. STRUCTS
struct myStruct {
int amount;
NSString *name;
};

235. #3:

236. NO

237. OBJECT

238. REFERENCES

239. IN

240. C

241. STRUCTS
struct myStruct {
int amount;
NSString *name;
};

242. #4:

243. NO

244. CASUAL

245. CASTING

246. BETWEEN

247. ID

248. AND

249. VOID*

250. #4:

251. NO

252. CASUAL

253. CASTING

254. BETWEEN

255. ID

256. AND

257. VOID*
NSString *myString = (NSString *) myCFRef;
!!!
CFStringRef myNewCFRef = (CFStringRef) myObj;

258. #4:

259. NO

260. CASUAL

261. CASTING

262. BETWEEN

263. ID

264. AND

265. VOID*
NSString *myString = (NSString *) myCFRef;
!!!
CFStringRef myNewCFRef = (CFStringRef) myObj;

266. #4:

267. NO

268. CASUAL

269. CASTING

270. BETWEEN

271. ID

272. AND

273. VOID*
NSString *myString = (NSString *) myCFRef;
!!!
CFStringRef myNewCFRef = (CFStringRef) myObj;

274. #4:

275. NO

276. CASUAL

277. CASTING

278. BETWEEN

279. ID

280. AND

281. VOID*
NSString *myString = (__bridge_transfer NSString *) myCFRef;
!!!
CFStringRef myNewCFRef = (__bridge_retained CFStringRef) myObj;

282. OTHER

283. RULES

284. OTHER

285. RULES
no NSZone
no NSAllocateObject
no NSDeallocateObject

286. USING

287. WEAK

288. REFERENCES

289. OBJECT

290. GRAPHS

291. OBJECT

292. GRAPHS
MyObjectA
B C
C NSString NSDate NSArray
NSString NSString NSString

293. RETAIN

294. CYCLES
strong references
weak references

295. RETAIN

296. CYCLES
Button A
strong references
weak references

297. RETAIN

298. CYCLES
Button A
B
strong references
weak references

299. RETAIN

300. CYCLES
Button A
B
C
strong references
weak references

301. RETAIN

302. CYCLES
Button A
B
C
1
2
1
strong references
weak references

303. RETAIN

304. CYCLES
Button A
B
C
1
2
1
strong references
weak references

305. RETAIN

306. CYCLES
Button A
B
C
1
2
1
strong references
weak references

307. RETAIN

308. CYCLES
A
B
C
1
2
1
strong references
weak references

309. RETAIN

310. CYCLES
A
B
C
2
1
strong references
weak references
0

311. RETAIN

312. CYCLES
B
C
2
1
strong references
weak references

313. RETAIN

314. CYCLES
B
C 1
strong references
weak references
1

315. RETAIN

316. CYCLES
B
C 1
strong references
weak references
1

317. WEAK

318. REFERENCES
SomeObject *myParent = parentRef;

319. WEAK

320. REFERENCES
SomeObject __weak *myParent = parentRef;

321. WEAK

322. REFERENCES
SomeObject __weak *myParent = parentRef;
@property (weak) IBOutlet UILabel *myLabel;
!
@property (strong) NSString *myProperty;

323. RETAIN

324. CYCLES
Button A
B
C
strong references
weak references

325. RETAIN

326. CYCLES
Button A
B
C
strong references
weak references

327. RETAIN

328. CYCLES
A
B
C
strong references
weak references

329. RETAIN

330. CYCLES
B
C
strong references
weak references

331. RETAIN

332. CYCLES
C
strong references
weak references

333. RETAIN

334. CYCLES
strong references
weak references

335. WEAK

336. REFERENCES
Button A
B
C
strong references
weak references

337. WEAK

338. REFERENCES
Button A
B
C
strong references
weak references
zeroing weak references

339. WEAK

340. REFERENCES
Button A
B
C
strong references
weak references
someVar
zeroing weak references

341. WEAK

342. REFERENCES
someVar
zeroing weak references

343. WEAK

344. REFERENCES
someVar
nil
zeroing weak references

345. ARC

346. REFERENCES

347. ARC

348. REFERENCES
Transitioning to ARC Release Notes
http://developer.apple.com/library/ios/#releasenotes/ObjectiveC/RN-TransitioningToARC/_
index.html

354. =

355. Common Issues While Converting a Project

356.
!
Xcode

357. 4.x

359. Organizer

361. Documentation

363. iOS

364. 5.0

365. Library

367.
Tools

369. Languages

371. Objective-C

373. Transitioning

374. to

375. ARC

376.
Release

377. Notes

383. =

384. Common Issues While Converting a Project

385. USING

386. STORYBOARDS

387. STORYBOARDS

388. STORYBOARDS

389. ONE

390. STORYBOARD

391. PER

392. APP

393. ONE

394. STORYBOARD

395. PER

396. APP

397. ONE

398. STORYBOARD

399. PER

400. APP

401. SCENES

402. AND

403. SEGUES

404. SCENES

405. AND

406. SEGUES
scene scene

407. SCENES

408. AND

409. SEGUES
segue
scene scene

410. NEW

411. IN

412. UIVIEWCONTROLLER
prepareForSegue:sender

413. Demo
StoryboardExample

414. 1:

415. CREATE

416. THE

417. STORYBOARD

418. 1:

419. CREATE

420. THE

421. STORYBOARD

422. 2:

423. CREATE

424. CUSTOM

425. CLASS

426. 2:

427. CREATE

428. CUSTOM

429. CLASS
#import Foundation/Foundation.h
!
@interface Photo : NSObject
!
@property (nonatomic, strong) NSString *name;
@property (nonatomic, strong) NSString *filename;
@property (nonatomic, strong) NSString *notes;
!
@end

430. 3:

431. ADD

432. CUSTOM

433. VIEW

434. CONTROLLER

435. CLASSES

436. 3:

437. ADD

438. CUSTOM

439. VIEW

440. CONTROLLER

441. CLASSES

442. 4:

443. LOAD

444. THE

445. DATA

446. 4:

447. LOAD

448. THE

449. DATA

450. 5:

451. PASS

452. THE

453. OBJECT

454. BETWEEN

455. SCENES

456. 5:

457. PASS

458. THE

459. OBJECT

460. BETWEEN

461. SCENES
photo

462. Demo
PassingPhotoData

463. ADDITIONAL

464. FEATURES

465. ADDITIONAL

466. FEATURES

467. ADDITIONAL

468. FEATURES
iCloud
Newsstand
Twitter Integration

469. ADDITIONAL

470. FEATURES
iCloud
Newsstand
Twitter Integration
UIStepper

471. ADDITIONAL

472. FEATURES
iCloud
Newsstand
Twitter Integration
UIStepper
UIPageViewController

473. ADDITIONAL

474. FEATURES
iCloud
Newsstand
Twitter Integration
UIStepper
UIPageViewController

475. ADDITIONAL

476. FEATURES
UIAlertViewStyle

478. ADDITIONAL

479. FEATURES
UIAlertViewStyle

481. ADDITIONAL

482. FEATURES
UIAlertViewStyle

484. ADDITIONAL

485. FEATURES
UIAlertViewStyle

487. 감사합니다.

488.
!
@neoroman