FBFriendPickerViewController来保存朋友图片

Question

是否有可能使用FBFriendPickerViewController获取朋友用户图片？ 我想：

FBFriendPickerViewController *friendPicker = [[FBFriendPickerViewController alloc] init]; 
friendPicker.fieldsForRequest = [[NSSet alloc] initWithObjects:@"picture", nil]; 
[friendPicker loadData]; 
[friendPicker presentModallyFromViewController:self 
             animated:YES 
             handler:^(FBViewController *sender, BOOL donePressed) { 
              if (donePressed) { 
UIImage *pic = friend[@"picture"]; 
... 

但在friend[@"picture"]nil。

Answer 1

解决方案

NSURL *profilePictureURL = [NSURL URLWithString:friend[@"picture"][@"data"][@"url"]]; 
                   NSURLRequest *profilePictureURLRequest = [NSURLRequest requestWithURL:profilePictureURL cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:10.0f]; // 

                   [NSURLConnection sendAsynchronousRequest:profilePictureURLRequest 
                            queue:[NSOperationQueue mainQueue] 
                         completionHandler:^(NSURLResponse* response, NSData* receivedData, NSError* error) 
                   { 
                    UIimage *userpic = [UIImage imageWithData:receivedData]; 
                   }]; 

Answer 2

试试这个代码在你的块内，在这里我得到它的工作。

if (donePressed) { 
    for (id<FBGraphUser> user in self.friendPickerController.selection) { 
     UIImage *pic = user[@"picture"]; 
     NSLog(@"%@",pic);            
    } 
}