使用 graph api 在 Facebook 上发布高分

Question

编辑：10-10-9
我认为当 JSON 库尝试解析

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

我如何格式化它以便 JSON 可以解析它时，应用程序崩溃了？

这是 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];

任何人都可以向我指出如何执行此操作的教程吗？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 Facebook 帖子附件部分。

 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 2 周之差的时间间隔，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]]

这是整个日期我从以下位置获取上面字符串的代码块：

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];

Answer 1

尝试 stringWithFormat [NSString stringWithFormat:@"%@", highscore]; 而不是 highscore