IOS GameKit

知識 10-10

簡介

GameKit是iOS SDK中一個常用的框架。其核心功能有3個：

交互遊戲平台Game Center，
P2P設備通訊功能
In-Game Voice。

IOS GameKit

實例步驟

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

IOS GameKit

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