在程序中添加Game Center功能（转）

转自：http://blog.youkuaiyun.com/qxue2000/article/details/6569357

在程序中添加Game Center功能

步骤：
1. 在iTunes Connect中启用Game Center。
2. 配置程序的Bundle identifier
3. 导入Game Kit Framework
4. 导入头文件<GameKit/GameKit.h>
5. 检测当前设备是否支持Game Center
6. 对于不支持Game Center的设备，对Game Kit Framework的引用应改为‘弱引用’（weak link）。
7. 程序启动后，认证用户。
一、iTunes Connect的配置
iTunes Connect Developer Guide
https://itunesconnect.apple.com/docs/iTunesConnect_DeveloperGuide.pdf/
二、配置程序的Bundle identifier
com.myCompany.myCoolGame  与 iTunes Connect中配置相同
三、添加FrameWork （weak－link）检测当前设备是否支持Game Center
Target->’Get info’ ->’Genaral’ Linkd libray -> 将Required改为Weak

BOOL isGameCenterAvailable()
{
// Check for presence of GKLocalPlayer API.
Class gcClass = (NSClassFromString(@”GKLocalPlayer”));
// The device must be running running iOS 4.1 or later.
NSString *reqSysVer = @”4.1″;
NSString *currSysVer = [[UIDevice currentDevice] systemVersion];
BOOL osVersionSupported = ([currSysVer compare:reqSysVer
options:NSNumericSearch] != NSOrderedAscending);
return (gcClass && osVersionSupported);
} 

四、认证用户
用户必须具有账户才可以访问Game center。程序启动或在需要调用Game Center功能的地方，认证当前的使用账户。
- (void) authenticateLocalUser{
if([GKLocalPlayer localPlayer].authenticated == NO){
[[GKLocalPlayer localPlayer] authenticateWithCompletionHandler:^(NSError *error){
if(error == nil){
//认证成功
}else{
//失败
UIAlertView* alert= [[[UIAlertView alloc] initWithTitle: @”Game Center Account Required”message: [NSString stringWithFormat: @"Reason: %@", [error localizedDescription]]delegate: self cancelButtonTitle: @”Try Again…” otherButtonTitles: NULL] autorelease];[alert show];
}}];
}
} 

五、排行榜功能
5.1 在iTunes Connect中配置排行榜
（得分格式、排行榜分类）等
5.2 将得分发送到Game Center
- (void) reportScore: (int64_t) score forCategory: (NSString*) category
{
GKScore *scoreReporter = [[[GKScore alloc] initWithCategory:category] autorelease];
scoreReporter.value = score;
[scoreReporter reportScoreWithCompletionHandler: ^(NSError *error){
if(error != nil){
//处理储物
}else{
//显示排行榜
}}];
} 
 
5.3 显示排行榜（LeaderboardController）
- (void) showLeaderboard{
GKLeaderboardViewController *leaderboardController = [[GKLeaderboardViewController alloc] init];
if (leaderboardController != nil) {
leaderboardController.leaderboardDelegate = self;
[self presentModalViewController: leaderboardController animated: YES];
}
} 

在显示leaderboard之前，可以配置leaderboard view Controller的一些属性。（category 属性，配置显示哪中分类下的排行榜；timeScope属性，配置显示哪个时间段内的排行榜)
//响应用户关闭排行榜的事件：
-(void)leaderboardViewControllerDidFinish:(GKLeaderboardViewController *)viewController
{
[self dismissModalViewControllerAnimated:YES];
} 
 
5.4 获取排行榜数据，自定义排行榜显示的view
//获取所有用户
-(void) retrieveTopTenScores
{
GKLeaderboard *leaderboardRequest = [GKLeaderboard alloc] init];
if (leaderboardRequest != nil) {
leaderboardRequest.playerScope = GKLeaderboardPlayerScopeGlobal;
leaderboardRequest.timeScope = GKLeaderboardTimeScopeAllTime;
leaderboardRequest.range = NSMakeRange(1,10);
[leaderboardRequest loadScoresWithCompletionHandler: ^(NSArray *scores, NSError *error) {
if (error != nil)
// handle the error.
if (scores != nil)
// process the score information.
}];
}//获取特定用户的排行榜数据
-(void) receiveMatchBestScores: (GKMatch*) match
{
GKLeaderboard *query = [[GKLeaderboard alloc] initWithPlayers: match.players];
if (query != nil){
[query loadScoresWithCompletionHandler: ^(NSArray *scores, NSError *error) {}
if (error != nil) 
// handle the error.
if (scores != nil) 
// process the score information.
}];
} 

六、Cocos2d 中加入 Game Center
6.1 方式1 （直接获取数据、自定义排行榜的view）
6。2 0.99.5 sdk of cocos2d have a RootViewController
6.3 方式3  使用viewcontroller
创建一个viewcontroller 将其view属性添加到cocos2d的 glview
UIViewController *tempVC=[[UIViewController alloc] init];
GKMatchRequest *request = [[[GKMatchRequest alloc] init] autorelease];
request.minPlayers = 2;
request.maxPlayers = 2;
request.playersToInvite = playersToInvite;
GKMatchmakerViewController *mmvc = [[[GKMatchmakerViewController alloc] initWithMatchRequest:request] autorelease];
mmvc.matchmakerDelegate = self;
[[[CCDirector sharedDirector] openGLView] addSubview:tempVC.view];
[tempVC presentModalViewController:mmvc animated:YES];
//响应事件
-(void)matchmakerViewControllerWasCancelled:(GKMatchmakerViewController *)viewController
{
[tempVC dismissModalViewControllerAnimated:YES];
[tempVC.view removeFromSuperview];
}
//退出时
-(void) onExit
{
[super onExit];[tempVC release];
}
- (void) showLeaderboard
{
GKLeaderboardViewController *leaderboardController = [[[GKLeaderboardViewController alloc] init] autorelease];
if (leaderboardController != nil){
leaderboardController.leaderboardDelegate = self;
[[[CCDirector sharedDirector] openGLView] addSubview:tempVC.view];
[tempVC presentModalViewController:leaderboardController animated: YES];
}
}
- (void)leaderboardViewControllerDidFinish:(GKLeaderboardViewController *)viewController
{
[tempVC dismissModalViewControllerAnimated:YES];
[tempVC.view removeFromSuperview];
} 

Categories:iphone/ipadTags:
获取iphone、ipad、ipod具体版本信息
/*
Erica Sadun, http://ericasadun.com
iPhone Developer’s Cookbook, 3.0 Edition
BSD License, Use at your own risk
*/
// Thanks to Emanuele Vulcano, Kevin Ballard/Eridius, Ryandjohnson, Matt Brown, etc.
#include <sys/socket.h> // Per msqr
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/if_dl.h>
#import “UIDevice-Hardware.h”
@implementation UIDevice (Hardware)
/*
Platforms

iFPGA -> ??
iPhone1,1 -> iPhone 1G
iPhone1,2 -> iPhone 3G
iPhone2,1 -> iPhone 3GS
iPhone3,1 -> iPhone 4/AT&T
iPhone3,2 -> iPhone 4/Other Carrier?
iPhone3,3 -> iPhone 4/Other Carrier?
iPhone4,1 -> ??iPhone 5
iPod1,1   -> iPod touch 1G
iPod2,1   -> iPod touch 2G
iPod2,2   -> ??iPod touch 2.5G
iPod3,1   -> iPod touch 3G
iPod4,1   -> iPod touch 4G
iPod5,1   -> ??iPod touch 5G

iPad1,1   -> iPad 1G, WiFi
iPad1,?   -> iPad 1G, 3G <- needs 3G owner to test
iPad2,1   -> iPad 2G (iProd 2,1)

AppleTV2,1 -> AppleTV 2
i386, x86_64 -> iPhone Simulator
*/
#pragma mark sysctlbyname utils
- (NSString *) getSysInfoByName:(char *)typeSpecifier
{
size_t size;
sysctlbyname(typeSpecifier, NULL, &size, NULL, 0);
char *answer = malloc(size);
sysctlbyname(typeSpecifier, answer, &size, NULL, 0);
NSString *results = [NSString stringWithCString:answer encoding: NSUTF8StringEncoding];
free(answer);
return results;
}
- (NSString *) platform
{
return [self getSysInfoByName:"hw.machine"];
}
// Thanks, Atomicbird
- (NSString *) hwmodel
{
return [self getSysInfoByName:"hw.model"];
}
#pragma mark sysctl utils
- (NSUInteger) getSysInfo: (uint) typeSpecifier
{
size_t size = sizeof(int);
int results;
int mib[2] = {CTL_HW, typeSpecifier};
sysctl(mib, 2, &results, &size, NULL, 0);
return (NSUInteger) results;
}
- (NSUInteger) cpuFrequency
{
return [self getSysInfo:HW_CPU_FREQ];
}
- (NSUInteger) busFrequency
{
return [self getSysInfo:HW_BUS_FREQ];
}
- (NSUInteger) totalMemory
{
return [self getSysInfo:HW_PHYSMEM];
}
- (NSUInteger) userMemory
{
return [self getSysInfo:HW_USERMEM];
}
- (NSUInteger) maxSocketBufferSize
{
return [self getSysInfo:KIPC_MAXSOCKBUF];
}
#pragma mark file system — Thanks Joachim Bean!
- (NSNumber *) totalDiskSpace
{
NSDictionary *fattributes = [[NSFileManager defaultManager] attributesOfFileSystemForPath:NSHomeDirectory() error:nil];
return [fattributes objectForKey:NSFileSystemSize];
}
- (NSNumber *) freeDiskSpace
{
NSDictionary *fattributes = [[NSFileManager defaultManager] attributesOfFileSystemForPath:NSHomeDirectory() error:nil];
return [fattributes objectForKey:NSFileSystemFreeSize];
}
#pragma mark platform type and name utils
- (NSUInteger) platformType
{
NSString *platform = [self platform];
// if ([platform isEqualToString:@"XX"]) return UIDeviceUnknown;
if ([platform isEqualToString:@"iFPGA"]) return UIDeviceIFPGA;
if ([platform isEqualToString:@"iPhone1,1"]) return UIDevice1GiPhone;
if ([platform isEqualToString:@"iPhone1,2"]) return UIDevice3GiPhone;
if ([platform hasPrefix:@"iPhone2"]) return UIDevice3GSiPhone;
if ([platform hasPrefix:@"iPhone3"]) return UIDevice4iPhone;
if ([platform hasPrefix:@"iPhone4"]) return UIDevice5iPhone;
if ([platform isEqualToString:@"iPod1,1"])   return UIDevice1GiPod;
if ([platform isEqualToString:@"iPod2,1"])   return UIDevice2GiPod;
if ([platform isEqualToString:@"iPod3,1"])   return UIDevice3GiPod;
if ([platform isEqualToString:@"iPod4,1"])   return UIDevice4GiPod;
if ([platform isEqualToString:@"iPad1,1"])   return UIDevice1GiPad;
if ([platform isEqualToString:@"iPad2,1"])   return UIDevice2GiPad;
if ([platform isEqualToString:@"AppleTV2,1"]) return UIDeviceAppleTV2;
/*
MISSING A SOLUTION HERE TO DATE TO DIFFERENTIATE iPAD and iPAD 3G…. SORRY!
*/
if ([platform hasPrefix:@"iPhone"]) return UIDeviceUnknowniPhone;
if ([platform hasPrefix:@"iPod"]) return UIDeviceUnknowniPod;
if ([platform hasPrefix:@"iPad"]) return UIDeviceUnknowniPad;
if ([platform hasSuffix:@"86"] || [platform isEqual:@"x86_64"]) // thanks Jordan Breeding
{
if ([[UIScreen mainScreen] bounds].size.width < 768)
return UIDeviceiPhoneSimulatoriPhone;
else
return UIDeviceiPhoneSimulatoriPad;
return UIDeviceiPhoneSimulator;
}
return UIDeviceUnknown;
}
- (NSString *) platformString
{
switch ([self platformType])
{
case UIDevice1GiPhone: return IPHONE_1G_NAMESTRING;
case UIDevice3GiPhone: return IPHONE_3G_NAMESTRING;
case UIDevice3GSiPhone: return IPHONE_3GS_NAMESTRING;
case UIDevice4iPhone: return IPHONE_4_NAMESTRING;
case UIDevice5iPhone: return IPHONE_5_NAMESTRING;
case UIDeviceUnknowniPhone: return IPHONE_UNKNOWN_NAMESTRING;
case UIDevice1GiPod: return IPOD_1G_NAMESTRING;
case UIDevice2GiPod: return IPOD_2G_NAMESTRING;
case UIDevice3GiPod: return IPOD_3G_NAMESTRING;
case UIDevice4GiPod: return IPOD_4G_NAMESTRING;
case UIDeviceUnknowniPod: return IPOD_UNKNOWN_NAMESTRING;
case UIDevice1GiPad : return IPAD_1G_NAMESTRING;
case UIDevice2GiPad : return IPAD_2G_NAMESTRING;
case UIDeviceAppleTV2 : return APPLETV_2G_NAMESTRING;
case UIDeviceiPhoneSimulator: return IPHONE_SIMULATOR_NAMESTRING;
case UIDeviceiPhoneSimulatoriPhone: return IPHONE_SIMULATOR_IPHONE_NAMESTRING;
case UIDeviceiPhoneSimulatoriPad: return IPHONE_SIMULATOR_IPAD_NAMESTRING;
case UIDeviceIFPGA: return IFPGA_NAMESTRING;
default: return IPOD_FAMILY_UNKNOWN_DEVICE;
}
}
#pragma mark MAC addy
// Return the local MAC addy
// Courtesy of FreeBSD hackers email list
// Accidentally munged during previous update. Fixed thanks to mlamb.
- (NSString *) macaddress
{
int mib[6];
size_t len;
char *buf;
unsigned char *ptr;
struct if_msghdr *ifm;
struct sockaddr_dl *sdl;
mib[0] = CTL_NET;
mib[1] = AF_ROUTE;
mib[2] = 0;
mib[3] = AF_LINK;
mib[4] = NET_RT_IFLIST;
if ((mib[5] = if_nametoindex(“en0″)) == 0) {
printf(“Error: if_nametoindex error/n”);
return NULL;
}
if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) {
printf(“Error: sysctl, take 1/n”);
return NULL;
}
if ((buf = malloc(len)) == NULL) {
printf(“Could not allocate memory. error!/n”);
return NULL;
}
if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) {
printf(“Error: sysctl, take 2″);
return NULL;
}
ifm = (struct if_msghdr *)buf;
sdl = (struct sockaddr_dl *)(ifm + 1);
ptr = (unsigned char *)LLADDR(sdl);
// NSString *outstring = [NSString stringWithFormat:@"%02x:%02x:%02x:%02x:%02x:%02x", *ptr, *(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5)];
NSString *outstring = [NSString stringWithFormat:@"%02x%02x%02x%02x%02x%02x", *ptr,*(ptr+1), *(ptr+2), *(ptr+3), *(ptr+4), *(ptr+5)];
free(buf);
return [outstring uppercaseString];
}
- (NSString *) platformCode
{
switch ([self platformType])
{
case UIDevice1GiPhone: return @”M68″;
case UIDevice3GiPhone: return @”N82″;
case UIDevice3GSiPhone: return @”N88″;
case UIDevice4iPhone: return @”N89″;
case UIDevice5iPhone: return IPHONE_UNKNOWN_NAMESTRING;
case UIDeviceUnknowniPhone: return IPHONE_UNKNOWN_NAMESTRING;
case UIDevice1GiPod: return @”N45″;
case UIDevice2GiPod: return @”N72″;
case UIDevice3GiPod: return @”N18″;
case UIDevice4GiPod: return @”N80″;
case UIDeviceUnknowniPod: return IPOD_UNKNOWN_NAMESTRING;
case UIDevice1GiPad: return @”K48″;
case UIDevice2GiPad: return IPAD_UNKNOWN_NAMESTRING;
case UIDeviceUnknowniPad: return IPAD_UNKNOWN_NAMESTRING;
case UIDeviceAppleTV2: return @”K66″;
case UIDeviceiPhoneSimulator: return IPHONE_SIMULATOR_NAMESTRING;
default: return IPOD_FAMILY_UNKNOWN_DEVICE;
}
}
// Illicit Bluetooth check — cannot be used in App Store
/*
Class  btclass = NSClassFromString(@”GKBluetoothSupport”);
if ([btclass respondsToSelector:@selector(bluetoothStatus)])
{
printf(“BTStatus %d/n”, ((int)[btclass performSelector:@selector(bluetoothStatus)] & 1) != 0);
bluetooth = ((int)[btclass performSelector:@selector(bluetoothStatus)] & 1) != 0;
printf(“Bluetooth %s enabled/n”, bluetooth ? “is” : “isn’t”);
}
*/
@end

另外有一个关于GameCenter的联网游戏文章写的很好，提供的代码，我还测试过，联网非常好。下边是传送门：
（译）如何使用GameCenter制作一个简单的多人游戏教程：第一部分
（译）如何使用GameCenter制作一个简单的多人游戏教程：第二部分

另外还有一个关于游戏中心的博客也写的非常不错。

http://www.himigame.com/iphone-cocos2d/535.html

下边这个可能更详细：

编写苹果游戏中心应用程序（翻译 1.1 GCD和块对象介绍）

编写苹果游戏中心应用程序（翻译 1.2 创建游戏中心账户）

编写苹果游戏中心应用程序（翻译 1.3 为iOS应用程序设置游戏中心）

编写苹果游戏中心应用程序（翻译 1.4 添加游戏工具包框架）

编写苹果游戏中心应用程序（翻译 1.5 在游戏中心验证本地玩家）

编写苹果游戏中心应用程序（翻译 1.6 获取本地玩家的信息）

编写苹果游戏中心应用程序（翻译 1.7 在游戏中心添加朋友）

编写苹果游戏中心应用程序（翻译 1.8 获取本地玩家的好友信息）

编写苹果游戏中心应用程序（翻译 1.9 在iTunes Connect中创建排行榜）

编写苹果游戏中心应用程序（翻译 1.10 向排行榜提交得分）

编写苹果游戏中心应用程序（翻译 1.11 编程获取排行榜信息）
编写苹果游戏中心应用程序（翻译 1.12 向玩家显示排行榜）
编写苹果游戏中心应用程序（翻译 1.13 在iTunes Connect中创建成就）

编写苹果游戏中心应用程序（翻译 1.14 向游戏中心提交成就）

编写苹果游戏中心应用程序（翻译 1.15 编程获取成就信息）