Classes/SampleViewController.m
/* |
File: SampleViewController.m |
Abstract: Provide an example of how to successfully submit scores to leaderboards |
and store them when submission fails. |
Version: 1.0 |
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*/ |
#import "SampleViewController.h" |
@implementation SampleViewController |
@synthesize player; |
- (id)initWithCoder:(NSCoder *)aDecoder |
{ |
self = [super initWithCoder:aDecoder]; |
if (self) { |
context = 0; |
} |
return self; |
} |
- (void) viewDidLoad |
{ |
[self enableGameCenter:NO]; |
} |
- (IBAction)showLeaderboardButtonAction:(id)event |
{ |
NSString * leaderboardCategory = @"com.appledts.GameCenterSampleApps.leaderboard.seconds"; |
// The intent here is to show the leaderboard and then submit a score. If we try to submit the score first there is no guarentee |
// the server will have recieved the score when retreiving the current list |
[self showLeaderboard:leaderboardCategory]; |
[self insertCurrentTimeIntoLeaderboard:leaderboardCategory]; |
} |
#pragma mark - |
#pragma mark Example of a score to be inserted |
// Using time as as an int of seconds from 1970 gives us a good rolling number to test against |
- (void)insertCurrentTimeIntoLeaderboard:(NSString*)leaderboard |
{ |
NSDate *today = [NSDate date]; |
int64_t score = [today timeIntervalSince1970]; |
GKScore * submitScore = [[GKScore alloc] initWithCategory:leaderboard]; |
[submitScore setValue:score]; |
// New feature in iOS5 tells GameCenter which leaderboard is the default per user. |
// This can be used to show a user's favorite course/track associated leaderboard, or just show the latest score submitted. |
[submitScore setShouldSetDefaultLeaderboard:YES]; |
// New feature in iOS5 allows you to set the context to which the score was sent. For instance this will set the context to be |
//the count of the button press per run time. Information stored in context isn't accessable in standard GKLeaderboardViewController, |
//instead it's accessable from GKLeaderboard's loadScoresWithCompletionHandler: |
[submitScore setContext:context++]; |
[self.player submitScore:submitScore]; |
[submitScore release]; |
} |
// Example of how to bring up a specific leaderboard |
- (void)showLeaderboard:(NSString *)leaderboard |
{ |
GKLeaderboardViewController * leaderboardViewController = [[GKLeaderboardViewController alloc] init]; |
[leaderboardViewController setCategory:leaderboard]; |
[leaderboardViewController setLeaderboardDelegate:self]; |
[self presentModalViewController:leaderboardViewController animated:YES]; |
[leaderboardViewController release]; |
} |
- (void)leaderboardViewControllerDidFinish:(GKLeaderboardViewController *)viewController |
{ |
[self dismissModalViewControllerAnimated: YES]; |
} |
// Disable GameCenter options from view |
- (void)enableGameCenter:(BOOL)enableGameCenter |
{ |
[showLeaderboardButton setEnabled:enableGameCenter]; |
} |
- (void)didReceiveMemoryWarning |
{ |
// Releases the view if it doesn't have a superview. |
[super didReceiveMemoryWarning]; |
// Release any cached data, images, etc that aren't in use. |
} |
- (void)dealloc |
{ |
[player release]; |
[super dealloc]; |
} |
@end |
Copyright © 2011 Apple Inc. All Rights Reserved. Terms of Use | Privacy Policy | Updated: 2011-12-06