Ios 使用graph api在facebook上发布高分

编辑：10-9-10
我认为当JSON库试图解析

[NSString stringWithFormat:@"%d weeks",[components week]];  

我将如何格式化它以便JSON能够解析它

下面是JSON代码行

NSString *attachmentStr = [jsonWriter stringWithObject:attachment];
        NSMutableDictionary* params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                              kAppId, @"api_key",
                               @"Share on Facebook",  @"user_message_prompt",
                               actionLinksStr, @"action_links",
                              attachmentStr, @"attachment",
                               nil];

有人能给我指一个关于如何做到这一点的教程吗？我可以轻松地在下面的代码块中发布静态文本，但我无法将

NSString

与动态数据集成，它不会显示在Fb post附件部分

 NSDictionary *attachment = [NSDictionary dictionaryWithObjectsAndKeys:
                        @"Testing", @"name",
                         @"testing2", @"caption",
                          [NSString stringWithFormat:@"%d weeks",[components week]], @"description"//Xcode says components undeclared 

//highscore, @"description", //here's the problem, highscore is the NSString variable.
                          @"http://testing.com/", @"href", nil];

更新： 问题是，我使用的字符串来自两周的时间间隔，输出是

[components week]

，然后xcode告诉我components是一个未声明的变量

[NSString stringWithFormat:@"%d weeks",[components week]]

下面是我从中获取上述字符串的整个日期代码块：

NSString *dateStr = @"20100716";
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:@"yyyyMMdd"];
NSDate *startDate = [dateFormat dateFromString:dateStr]; 
NSDate *endDate = [NSDate date];

NSCalendar *gregorian = [[NSCalendar alloc]
initWithCalendarIdentifier:NSGregorianCalendar];

NSUInteger unitFlags = NSWeekCalendarUnit | NSDayCalendarUnit;

NSDateComponents *components = [gregorian components:unitFlags
fromDate:startDate
toDate:endDate options:0];

NSInteger weeks = [components week];
NSInteger days = [components day];

---

尝试stringWithFormat

[NSString stringWithFormat:@“%@”，高分]而不是高分