iOS 5 Programming Cookbook phần 3 pps

... 1 63 Figure 2 -33 . A navigation button added to a navigation bar That was simple and easy. But if you are an iOS user, you probably have noticed that the system apps that come preconfigured on iOS ... Presenting Multiple View Controllers with UITabBarController | 1 85 And the results are exactly what we were looking for: Figure 2- 35 . A system Add button The first parameter of the ini...

Ngày tải lên: 13/08/2014, 18:20

... Accessing Variables in Block Objects 36 2 5. 3 Invoking Block Objects 36 9 5. 4 Dispatching Tasks to Grand Central Dispatch 37 0 5. 5 Performing UI-Related Tasks with GCD 37 1 5. 6 Performing Non-UI-Related ... Existing Project 34 9 5. Concurrency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 3 5. 1 Constructi...

Ngày tải lên: 13/08/2014, 18:20

... the image shown in Figure 15- 32 will start moving towards the bottom-right corner, as shown in Figure 15- 33 , over a period of 5 seconds. 15. 13 Animating and Moving Views | 8 05 - (BOOL) application:(UIApplication ... animations at 1 p.m., image 1 will start its animation at 13: 00:00 and finish it at 13: 00: 03, while image 2 starts at 13: 00:02 and finishes at 13: 00: 05. Here is...

Ngày tải lên: 13/08/2014, 18:20

... around 30 % of iOS devices today are running iOS versions that are about a year or a year and a half old. If today we are working with iOS 5, there are still iOS devices out there running iOS, 3 for ... runs on iOS 5 out to the App Store. Some of the classes that we use are available only on specific versions of iOS. For in- stance, the NSJSONSerialization class is available...

Ngày tải lên: 13/08/2014, 18:20

... nil){ return YES; } else { return NO; 2.22 Displaying Popovers with UIPopoverController | 255 3. 3 Populating a Table View with Data Problem You would like to populate your table view with data. Solution Conform ... result = 3; break; } case 1:{ result = 5; break; } case 2:{ result = 8; break; } } } return result; } So up to now, we have asked the table view to render...

Ngày tải lên: 13/08/2014, 18:20

... num = 1} 5. 5 Performing UI-Related Tasks with GCD | 3 75 }); }); In this chapter, you will learn all there is to know about GCD and how to use it to write modern multithreaded apps for iOS and ... choose what you want to do at runtime and change the activity of a program. In 5. 0 Introduction | 35 5 See Also XXX 5. 3 Invoking Block Objects Problem You've learned how to constr...

Ngày tải lên: 13/08/2014, 18:20

... shown in Figure 6-6. 6.6 Displaying Custom Pins on a Map View | 451 CHAPTER 8 Networking, JSON, XML and Twitter 8.0 Introduction iOS apps, when connected to the internet, become more liveley. That ... standard, or hybrid. In this example, we are using the satellite map type (see Figure 6 -3) . 6.1 Creating a Map View | 433 During the UIGestureRecognizerStateEnded state, the reported x and...

Ngày tải lên: 13/08/2014, 18:20

... makeKeyAndVisible]; return YES; } 10 .3 Retrieving Properties of Address Book Entries | 55 5 9.6 Playing Video Files Problem You would like to be able to play video files in your iOS application. Solution Use ... Music Library | 53 9 withFlags:(NSUInteger)flags{ if (flags == AVAudioSessionInterruptionFlags_ShouldResume && player != nil){ [player play]; } } Discussion On...

Ngày tải lên: 13/08/2014, 18:20

... iPhone 3G, iPhone 3GS, iPhone 4, and iPod Touch (second and third generations), provided that the iOS on these devices has been updated to iOS 4.0 or iOS 5. Furthermore, a device could have iOS 5. 0 ... "Saving_and_Loading_the_State_of_Multitasking _iOS_ AppsAppDelegate.h" @implementation Saving_and_Loading_the_State_of_Multitasking _iOS_ AppsAppDelegate 12.6 Saving and...

Ngày tải lên: 13/08/2014, 18:20

... pixels. 15. 0 Introduction | 7 35 Figure 15- 4. Saving our Xcode project on disk 4. On the right side, select Objective-C class, and then press Next (see Figure 15- 5). 15. 0 Introduction | 739 Figure 15- 6. ... instance, compare the iPhone 3GS to the iPhone 4. Both devices have 3 .5- inch displays. However, the number of pixels that iPhone 3GS can draw in portrait mode is 32 0×480. T...

Ngày tải lên: 13/08/2014, 18:20