如何使用Facebook iOS sdk 4.2获取fb好友列表

Question

我试图通过Facebook iOS sdk 4.2查找所有Facebook好友列表。

我的代码是

NSDictionary *param=[NSDictionary dictionaryWithObjectsAndKeys:@"picture.width(1000).height(1000), 
                     name, 
                     link", 
                     @"fields", 
                     nil];

FBSDKGraphRequest *request = [[FBSDKGraphRequest alloc]
                              initWithGraphPath:@"me/friends"
                              parameters:param
                              HTTPMethod:@"GET"];

[request startWithCompletionHandler : ^(FBSDKGraphRequestConnection       
          *connection, 
          id result, 
          NSError *error) {
              NSLog(@"facebook friends :%@",result); // Handle the result
 }];