gistfile1.txt

//facebook
-(NSNumber *) facebook:(NSString*)s
{
    if(!facebookState) facebookState = [[NSNumber alloc] initWithInt:0];

    if(s == @"logout") {//ログアウトの場合
        [_facebook logout:self];
        facebookState = [[NSNumber alloc] initWithInt:0];
        return facebookState;
    }

    if([facebookState intValue] == 2) return facebookState;

    //状態取得したい時
    if(s == @"") {
        if(_facebook && _facebook.isSessionValid==YES) {
            facebookState = [[NSNumber alloc] initWithInt:1];
        } else {
            facebookState = [[NSNumber alloc] initWithInt:0];
        }
        return facebookState;
    }

    //実行関連
    if([facebookState intValue] == 0) {//ログインの場合
        [self facebookAccountLogin];
    } else if([facebookState intValue] == 1) {//投稿
        [self postfacebook:s];
        facebookState = [[NSNumber alloc] initWithInt:2];
    }

    return facebookState;
}

-(void) facebooktReset
{
    facebookState = [[NSNumber alloc] initWithInt:0];
}