Game Center complete !!!

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//  Afro Penguin
//
//  Created by julong on 2/21/14.
//  Copyright julong 2014. All rights reserved.
//
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
1) .h
#import <GameKit/GameKit.h>
<GKLeaderboardViewControllerDelegate,GKAchievementViewControllerDelegate>
uint64_t context;
    bool enableGameCenter;
    NSLock *writeLock;
@property(nonatomic)bool enableGameCenter;
@property (readonly, nonatomic) NSMutableArray * storedScores;
@property (readonly, nonatomic) NSString *storedScoresFilename;

-(void)storeScore:(GKScore *)score ;
-(void)resubmitStoredScores;
-(void)authenticateLocalPlayer;
-(void)showLeaderboardNSString:(NSString *)leaderboard ;
-(void)insertCurrentTimeIntoLeaderboard:(NSString*)leaderboard ;
-(void)enableGameCenter:(BOOL)enableGameCenter ;

2).m
///////////////////////////////////////
//        Game Center
         NSString * leaderboardCategory = @"LeaderID";
        //[self enableGameCenter:NO];
        [self authenticateLocalPlayer];
       // [self showLeaderboardNSString:leaderboardCategory];
        //[self insertCurrentTimeIntoLeaderboard:leaderboardCategory];

        __block id copy_self = self;
        // Leaderboard Menu Item using blocks
        CCMenuItem *itemLeaderboard = [CCMenuItemFont itemWithString:@"Leaderboard" block:^(id sender) {


            GKLeaderboardViewController *leaderboardViewController = [[GKLeaderboardViewController alloc] init];
            leaderboardViewController.leaderboardDelegate = copy_self;

            AppController *app = (AppController*) [[UIApplication sharedApplication] delegate];

            [[app navController] presentModalViewController:leaderboardViewController animated:YES];

            [leaderboardViewController release];
        }];
        CCMenuItem *sendScore = [CCMenuItemFont itemWithString:@"send score" block:^(id sender)
                                 {

                                     NSString * leaderboardCategory2 = @"LeaderID";
                                     [self insertCurrentTimeIntoLeaderboard:leaderboardCategory2];

                                 }
                                 ];
        CCMenu *menu = [CCMenu menuWithItems:itemLeaderboard,sendScore,nil];

        [menu alignItemsHorizontallyWithPadding:20];
        [menu setPosition:ccp( size.width/2, size.height/2 - 50)];

        // Add the menu to the layer
        [self addChild:menu z:9999];


///////////////////////////////////////
//////////////////////////////////////////////////////////
//    SCORE
//////////////////////////////////////////////////////////
- (void)insertCurrentTimeIntoLeaderboard:(NSString*)leaderboard{
    NSLog(@"current time state");

    int khighScore = [[NSUserDefaults standardUserDefaults] integerForKey:kHighScoreKey];

    int64_t score =khighScore;
    NSLog(@"iับค่าจาก KhighScore int64 %lld",khighScore);

    GKScore * submitScore = [[[GKScore alloc] initWithCategory:leaderboard] autorelease];

    NSLog(@"set submitscore value state!");
    [submitScore setValue:score];
    NSLog(@"after set submitscore value is %lld",submitScore.value);

   latest score submitted.
    [submitScore setShouldSetDefaultLeaderboard:YES];


    [submitScore setContext:context++];

    [self submitScore:submitScore];
    [submitScore release];
}
- (void)submitScore:(GKScore *)score{
    if ([GKLocalPlayer localPlayer].authenticated) {
        if (!score.value) {
            // Unable to validate data.
            NSLog(@"No data from score.value %lld",score.value);
            return;
        }

        // Store the scores if there is an error.

        [score reportScoreWithCompletionHandler:^(NSError *error){
            if (!error || (![error code] && ![error domain])) {
                // Score submitted correctly. Resubmit others
                NSLog(@"resubmit");
                [self resubmitStoredScores];
            } else {
                // Store score for next authentication.
                NSLog(@"Store score");
                [self storeScore:score];
            }
        }];
    }
}
// Attempt to resubmit the scores.
- (void)resubmitStoredScores
{
    NSLog(@"resubmit state");
    if (storedScores) {
        // Keeping an index prevents new entries to be added when the network is down
        int index = [storedScores count]-1;
        while( index >= 0 ) {
            GKScore * score = [storedScores objectAtIndex:index];
            [self submitScore:score];
            [storedScores removeObjectAtIndex:index];
            index--;
        }
        [self writeStoredScore];
    }
}
// Store score for submission at a later time.
- (void)storeScore:(GKScore *)score
{
    NSLog(@"store state");
    [storedScores addObject:score];
    [self writeStoredScore];
}
// Save stored scores to file.
- (void)writeStoredScore
{
    [writeLock lock];
    NSData * archivedScore = [NSKeyedArchiver archivedDataWithRootObject:storedScores];
    NSError * error;
    [archivedScore writeToFile:storedScoresFilename options:NSDataWritingFileProtectionNone error:&error];
    if (error) {
        //  Error saving file, handle accordingly
    }
    [writeLock unlock];
}


///////////////////////
#pragma mark GameKit delegate
///////////////////////////////////////
//  Game Center
-(void)authenticateLocalPlayer{
    GKLocalPlayer *localPlayer = [GKLocalPlayer localPlayer];

    localPlayer.authenticateHandler = ^(UIViewController *viewController, NSError *error){
        /*if (viewController != nil) {
            [self presentViewController:viewController animated:YES completion:nil];
        }
        else{
         */
            if ([GKLocalPlayer localPlayer].authenticated) {
                //enableGameCenter = YES;

                // Get the default leaderboard identifier.
                [[GKLocalPlayer localPlayer] loadDefaultLeaderboardIdentifierWithCompletionHandler:^(NSString *leaderboardIdentifier, NSError *error) {

                    if (error != nil) {
                        NSLog(@"%@", [error localizedDescription]);
                    }
                    else{
                        leaderboardIdentifier = leaderboardIdentifier;
                        NSLog(@" รับค่า  leaderboard %@",leaderboardIdentifier);
                    }
                }];
            /*}

            else{
                enableGameCenter = NO;
            }*/
        }
    };

}

- (void)leaderboardViewControllerDidFinish:(GKLeaderboardViewController *)viewController
{
    AppController *app = (AppController*) [[UIApplication sharedApplication] delegate];
    [[app navController] dismissModalViewControllerAnimated:YES];
}
//////////////