GameKit是iOS SDK中一個常用的框架。其核心功能有3個:
1.在鏈接 iTunes 時請確保擁有一個唯一的 App ID( unique App ID),App ID在我們應用程序更新 bundle ID時及在Xcode代碼簽名與相應的配置文件需要使用到。
2.創建新的應用程序和更新應用程序信息。在添加新的應用程序文檔可以了解更多有關信息。
3.打開你申請的application,點擊Manage Game Center選項。進入後點擊Enable Game Center使你的Game Center生效。接下來設置自己的Leaderboard和Achievements。
4.下一步涉及處理代碼,並為我們的應用程序創建用戶界面。
5.創建一個single view application,並輸入 bundle identifier 。
6.更新 ViewController.xib,如下所示
7.選擇項目文件,然後選擇目標,然後添加GameKit.framework
8.為已添加的按鈕創建IBActions
9.更新ViewController.h文件,如下所示
#import <UIKit/UIKit.h> #import <GameKit/GameKit.h> @interface ViewController : UIViewController <GKLeaderboardViewControllerDelegate> -(IBAction)updateScore:(id)sender; -(IBAction)showLeaderBoard:(id)sender; @end
10.更新ViewController.m ,如下所示
#import "ViewController.h" @interface ViewController () @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; if([GKLocalPlayer localPlayer].authenticated == NO) { [[GKLocalPlayer localPlayer] authenticateWithCompletionHandler:^(NSError *error) { NSLog(@"Error%@",error); }]; } } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } - (void) updateScore: (int64_t) score forLeaderboardID: (NSString*) category { GKScore *scoreObj = [[GKScore alloc] initWithCategory:category]; scoreObj.value = score; scoreObj.context = 0; [scoreObj reportScoreWithCompletionHandler:^(NSError *error) { // Completion code can be added here UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"Score Updated Succesfully" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles: nil]; [alert show]; }]; } -(IBAction)updateScore:(id)sender{ [self updateScore:200 forLeaderboardID:@"tutorialsPoint"]; } -(IBAction)showLeaderBoard:(id)sender{ GKLeaderboardViewController *leaderboardViewController = [[GKLeaderboardViewController alloc] init]; leaderboardViewController.leaderboardDelegate = self; [self presentModalViewController: leaderboardViewController animated:YES]; } #pragma mark - Gamekit delegates - (void)leaderboardViewControllerDidFinish: (GKLeaderboardViewController *)viewController{ [self dismissModalViewControllerAnimated:YES]; } @end
運行該應用程序,輸出結果如下
當我們單擊顯示排行榜時,屏幕顯示如下:
當我們點擊更新分數,比分將被更新到我們排行榜上,我們會得到一個信息,如下圖所示