ios - 如何从gmail联系人中获取 friend 的个人资料图片？

Question

我正在尝试导入 GMail 联系人( friend 列表)。我有 friend 的邮件 ID、姓名和电话号码，但如果我尝试获取图像，它会显示“401 错误”。

我用过的代码如下:

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

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

如何获取 friend 的头像？我哪里出错了？

Answer 1

Looking at some other (public) code that's roughly the same as what you're doing ，我看到您应该对这些照片链接使用auth token。如果没有该授权 token ，Google 会认为您可能是恶意的，并会发回 401 错误。

例如

    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:)];
      }
    }
  }