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iOS GameKit

編輯:IOS入門簡介

IOS GameKit


簡介

GameKit是iOS SDK中一個常用的框架。其核心功能有3個:

  • 交互游戲平台Game Center,
  • P2P設備通訊功能
  • In-Game Voice。

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

gamekitInterface

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

輸出

運行該應用程序,輸出結果如下

gamekit_Output1

當我們單擊顯示排行榜時,屏幕顯示如下:

gamekit_Output2

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

gamekit_Output3

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