November 2013
Intermediate to advanced
576 pages
19h 3m
English
book
iOS Components and Frameworks: Understanding the Advanced Features of the iOS SDK
by Kyle Richter, Joe Keeley
Content preview from iOS Components and Frameworks: Understanding the Advanced Features of the iOS SDK
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Achievement Challenges
iOS 6 brought a new feature to Game Center called Challenges, in which a user can challenge a Game Center friend to beat her score or match her achievements, as shown in Figure 4.5.
Figure 4.5 Challenging a friend to complete an achievement that is still being progressed.
Note
Game Center allows the user to challenge a friend to beat an unearned achievement as long as it is visible to the user.
- (void)showChallenges{ [[GKGameCenterViewController sharedController]setDelegate:self]; [[GKGameCenterViewController sharedController] setViewState: GKGameCenterViewControllerStateAchievements ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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