通过 JSON 获取来自 YouTube 用户的上传总数

Question

我一直在尝试查找某个用户的上传总数，并找到了以下线程。

如何检索特定 Youtube 用户上传的视频数量？

这个问题的答案效果很好，当我从浏览器点击 URL 时，但是当我进入 Obj-C 点击以下 URL 时，它会为我返回 NULL。

https://gdata.youtube.com/feeds/api/users/megangore/uploads?v=2&alt=jsonc&max-results=0

我

正在使用以下代码，有人可以告诉我我做错了什么吗？我快

疯了。

NSString *URL = @"https://gdata.youtube.com/feeds/api/users/megangore/uploads?v=2&alt=jsonc&max-results=2";
NSLog(@"*******%@", URL);
dispatch_async(kBgQueue, ^{NSData* data = [NSData dataWithContentsOfURL:[NSURL URLWithString:URL]];
    @autoreleasepool{
        NSLog(@"******* PERFORMING STUFF *******");
        [self performSelectorOnMainThread:@selector(processOrders:)withObject:data waitUntilDone:YES];
    }
});

而这反过来又调用

//GOES TO SERVER AND LOOKS AT WORK ORDERS
-(void)processOrders:(NSData *)responseData
{
NSError* error;
NSDictionary* json = [NSJSONSerialization
                      JSONObjectWithData:responseData //1
                      options:kNilOptions
                      error:&error];
//AMOUNT OF WORK ORDERS
NSArray* Orders = [json objectForKey:@"body"]; //2
NSDictionary* nextOrder = [Orders objectAtIndex:0];
NSString* TotalNumber = [nextOrder objectForKey:@"totalItems"];
NSLog(@"**********************************%@", TotalNumber);
}

也：

#define kBgQueue dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0) //1

---

这是答案

NSError* error;
NSDictionary* json = [NSJSONSerialization
                      JSONObjectWithData:responseData //1
                      options:kNilOptions
                      error:&error];
//AMOUNT OF WORK ORDERS
NSDictionary *returnedData = json[@"data"];
NSNumber *uploadCount = returnedData[@"totalItems"];
int value = [uploadCount intValue];
NSLog(@"loans: %i", value);

Answer 1

查看提供的链接的输出

 {"apiVersion":"2.1","data":{"updated":"2013-10-08T17:44:29.337Z","totalItems":115,"startIndex":1,"itemsPerPage":0}}

没有"body"键，也没有数组。如果上传中的项目总数计数，

   NSDictionary *returnedData = json[@"data"];
   NSNumber *uploadCount = returnedData[@"totalItems"];