如何从Gmail联系人获取朋友个人资料图片？

Question

我正在尝试导入GMail联系人（好友列表）。我有朋友的邮件ID，姓名和电话号码，但是如果我试图让图片显示“401错误”。

我用的代码如下：

GDataLink *photoLink = [contact photoLink]; 
NSLog(@"%@",photoLink); 

NSURL *imageURL = [photoLink URL]; 
NSLog(@"image url = %@",imageURL); 

我怎样才能得到朋友的个人资料图片？我哪里做错了？

Answer 1

Looking at some other (public) code that's roughly the same as what you're doing，我看你应该使用身份验证令牌与这些照片的链接。如果没有该身份验证令牌，Google会认为您可能是恶意的，并会发回401错误。

E.G.

GDataLink *photoLink = [contact photoLink]; 

    NSString *imageETag = [photoLink ETag]; 
    if (imageETag == nil || ![mContactImageETag isEqual:imageETag]) { 

     if (imageETag != nil) { 

     // get an NSURLRequest object with an auth token 
     NSURL *imageURL = [photoLink URL]; 
     GDataServiceGoogleContact *service = [self contactService]; 

     // requestForURL:ETag:httpMethod: sets the user agent header of the 
     // request and, when using ClientLogin, adds the authorization header 
     NSMutableURLRequest *request = [service requestForURL:imageURL 
                 ETag:nil 
                httpMethod:nil]; 

     [request setValue:@"image/*" forHTTPHeaderField:@"Accept"]; 

     GTMHTTPFetcher *fetcher = [GTMHTTPFetcher fetcherWithRequest:request]; 
     [fetcher setAuthorizer:[service authorizer]]; 
     [fetcher beginFetchWithDelegate:self 
       didFinishSelector:@selector(imageFetcher:finishedWithData:error:)]; 
     } 
    } 
    }