Facebook Graph API - 获取相册ID [英] Facebook Graph API - get a photos album ID

问题描述

我正在写一个将照片上传到Facebook的应用程序。我没有提供相册ID，因此我的应用程序是创建专辑。

我的问题是：如何获取照片上传到的相册ID ？

当我 GET 照片信息相册不存在于我的希望的JSON。

解决方案

这个问题一直在追赶我一段时间，但我认为我已经破解了坚果。

专辑ID被隐藏在链接值中，因此如果您有Graph API中的照片文本对象，则可以如下检索相册ID：

  NSString * link = [item valueForKey：@link]; 
 NSString * album_id = nil; 
 NSRange fRange = [link rangeOfString：@set = a。]; 
 if（fRange.location！= NSNotFound）{
 NSInteger firstPos = fRange.location + 6; 
 NSInteger endPos = [link rangeOfString：@。选项：NSLiteralSearch范围：NSMakeRange（firstPos，25）]。 
 album_id = [[link substringWithRange：NSMakeRange（firstPos，endPos  -  firstPos）] copy]; 
} 
  

它可能都被删除到一行代码，但我认为这更可读。
获取相册信息使用：

  [facebook requestWithGraphPath：album_id andDelegate：delegate]; 
  

为了让相册中的所有照片使用：

  [facebook requestWithGraphPath：[NSString stringWithFormat：@％@ / photos，album_id] andDelegate：delegate]; 
  

希望这可以帮助某人。

I'm writing an application that uploads a photo to facebook. I'm not supplying an album ID so an album is created on behalf of my app.

My question is: how do I get the album ID the photo was uploaded to?

When I GET the the photo information the album isn't present in the JSON which was my hope.

解决方案

This issue has been bugging me for a while as well, but I think I have cracked the nut.

The album ID is hidden in the link value, so if you have a photo-post object from the Graph API, you can retrieve the Album ID like this:

NSString *link = [item valueForKey:@"link"];
NSString *album_id = nil;
NSRange fRange = [link rangeOfString:@"set=a."];
if(fRange.location != NSNotFound) {         
    NSInteger firstPos = fRange.location + 6;
    NSInteger endPos = [link rangeOfString:@"." options:NSLiteralSearch range:NSMakeRange(firstPos, 25)].location;
    album_id = [[link substringWithRange:NSMakeRange(firstPos, endPos - firstPos)] copy];
}

It could probably all be stripped down to one line of code, but I think this is more readable. For getting the album information use:

[facebook requestWithGraphPath:album_id andDelegate:delegate];

For getting all the photos in an album use:

[facebook requestWithGraphPath:[NSString stringWithFormat:@"%@/photos", album_id] andDelegate:delegate];

Hope this can help someone.

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