[cocos2d Advent Calendar 2011]TwitterのOAuth認証のライブラリをcocos2dで使用する方法（サンプル付き）

-(NSNumber ) twit:(NSString)s;
-(void) twitReset;

#import <uikit/UIKit.h>

//twitter
#import "SA_OAuthTwitterEngine.h"
#import "SA_OAuthTwitterController.h"
#define kOAuthConsumerKey                   @"xxxxx"                        //REPLACE ME
#define kOAuthConsumerSecret                @"xxxxx"   //REPLACE ME

@class RootViewController;

@interface AppDelegate : NSObject <uiapplicationDelegate> {
	UIWindow			*window;
	RootViewController	*viewController;

    //twitter
    SA_OAuthTwitterEngine *twitterEngine;
    NSNumber *twitterState;//0.ログイン前 1.ログイン後 2.つぶやき終了
}

@property (nonatomic, retain) UIWindow *window;

//twitter
-(NSNumber *) twit:(NSString*)s;

@end

-(NSNumber *) twit:(NSString*)s
{
    if(!twitterState) twitterState = [[NSNumber alloc] initWithInt:0];

    //
    if(s == @"") {
        if([twitterState intValue] == 0) if(twitterEngine && [twitterEngine isAuthorized]==YES) twitterState = [[NSNumber alloc] initWithInt:1];
        return twitterState;
    }

    UIViewController *controller = nil;
    if (!twitterEngine || [twitterEngine isAuthorized]==NO) {
        twitterEngine = [[SA_OAuthTwitterEngine alloc] initOAuthWithDelegate: self];
        twitterEngine.consumerKey = kOAuthConsumerKey;
        twitterEngine.consumerSecret = kOAuthConsumerSecret;
        controller = [SA_OAuthTwitterController controllerToEnterCredentialsWithTwitterEngine:twitterEngine delegate: nil];
        [viewController presentModalViewController: controller animated: YES];
    } else {
        if([twitterState intValue] != 2) {//2重投稿禁止
            [twitterEngine sendUpdate:s];
            twitterState = [[NSNumber alloc] initWithInt:2];
        }
    }
    return twitterState;
}

-(void) twitReset
{
    twitterState = [[NSNumber alloc] initWithInt:0];
}