在iOS中抓取Facebook的朋友时出错 [英] Error while fetching Facebook friends in iOS

问题描述

我正在尝试取得已登录用户的Facebook朋友列表，并且在我的帐户中可以正常工作，但是当我将应用详细信息迁移到新帐户并更改了应用程序ID和应用程序密码时，我收到以下错误信息

 错误域= com.facebook.sdk代码= 5操作无法完成（com.facebook.sdk错误5.）UserInfo = 0xf89c0b0 {com.facebook.sdk：HTTPStatusCode = 400，com.facebook.sdk：ParsedJSONResponseKey = {
 body = {
 error = {
 code = 100; 
 message =（＃100）未知字段：用户名。 
 type = OAuthException; 
}; 
}; 
 code = 400; 
}，com.facebook.sdk：ErrorSessionKey =&FBSession：0xe5a6c30，状态：FBSessionStateOpen，loginHandler：0xe58d5a0，appID：705259966179163，urlSchemeSuffix：，tokenCachingStrategy：< FBSessionTokenCachingStrategy：0xf87b180>，expirationDate：4001-01- 01 00:00:00 +0000，refreshDate：2014-05-20 07:14:50 +0000，attemptRefreshDate：0001-12-30 00:00:00 +0000，permissions :( 
 status，
权限
）>} 
  

这是我目前的代码， （NSArray *，NSError *））完成Block $（$）$（$）$（$）$（$） b $ b {

[FBSession openActiveSessionWithReadPermissions：nil
allowLoginUI：YES
completionHandler：^（FBSession * session，
FBSessionState state，
NSError * error）{
if（error）{

NSLog（@Error）;
} else if（session.isOpen）{

[[FBRequest requestForMe] startWithCompletionHandler：^（FBRequestConnection * connection，NSDictionary< FBGraphUser> * user，NSError * error）{
if（error）{
//在这里抛出代码100错误
completionBlock（nil，error）;
} else {
FBRequest * friendsRequest = [FBRequest requestForMyFriends];
[friendsRequest startWithCompletionHandler：^（FBRequestConnection * connection，NSDictionary * result，NSError * error）{
if（error）
completionBlock（nil，error）;
else
{
NSArray * friendJSONs = [result objectForKey：@data];

NSMutableArray * friends = [NSMutableArray array];
for（NSDictionary * friendDict in friendJSONs）
{
SocialProfile * friend = [[SocialProfile alloc] initWithDictionary：friendDict socialMedia：kSocialMediaFacebook];
[朋友addObject：friend];
}
completionBlock（friends，nil）;
}
}];
}
}];

}
}];
返回YES;
}

如果我使用我的旧应用程序ID和密码，此代码工作正常。我检查了新帐户的设置，一切都和我在旧帐户中所做的一样，我不明白问题是什么。

解决方案

根据 https://developers.facebook.com/docs/apps/changelog
朋友列表现在只返回也使用您的应用程序的朋友：通过/ me / friends endpoint现在限于已经授权您的应用程序的朋友列表。

所以我把上面的代码改成了这个，它给了我的朋友列表使用应用程序而不是整个FB朋友列表

  FBRequest * friendsRequest = [FBRequest requestForGraphPath：@/ me / friends]; 
  

I'm trying to fetch facebook friendlist of a logged in user and it works fine in my account, but when I migrated the app details to a new account and changed the app ID and app secret I'm getting this error below

Error Domain=com.facebook.sdk Code=5 "The operation couldn’t be completed. (com.facebook.sdk error 5.)" UserInfo=0xf89c0b0 {com.facebook.sdk:HTTPStatusCode=400, com.facebook.sdk:ParsedJSONResponseKey={
    body =     {
        error =         {
            code = 100;
            message = "(#100) Unknown fields: username.";
            type = OAuthException;
        };
    };
    code = 400;
}, com.facebook.sdk:ErrorSessionKey=<FBSession: 0xe5a6c30, state: FBSessionStateOpen, loginHandler: 0xe58d5a0, appID: 705259966179163, urlSchemeSuffix: , tokenCachingStrategy:<FBSessionTokenCachingStrategy: 0xf87b180>, expirationDate: 4001-01-01 00:00:00 +0000, refreshDate: 2014-05-20 07:14:50 +0000, attemptedRefreshDate: 0001-12-30 00:00:00 +0000, permissions:(
    status,
    permission
)>}

This is my current code for fetching friends

- (BOOL)retrieveFacebookFriendsForProfileId:(NSString *)fbProfileId completionBlock:(void (^)(NSArray *, NSError *))completionBlock
{

    [FBSession openActiveSessionWithReadPermissions:nil
                                       allowLoginUI:YES
                                  completionHandler:^(FBSession *session,
                                                      FBSessionState state,
                                                      NSError *error) {
                                      if (error) {

                                          NSLog(@"Error");
                                      } else if (session.isOpen) {

    [[FBRequest requestForMe] startWithCompletionHandler: ^(FBRequestConnection *connection, NSDictionary<FBGraphUser> *user, NSError *error) {
        if (error) {
            //Throws the code 100 error here
            completionBlock(nil, error);
        }else{
            FBRequest* friendsRequest = [FBRequest requestForMyFriends];
            [friendsRequest startWithCompletionHandler: ^(FBRequestConnection *connection,NSDictionary* result,NSError *error) {
                if(error)
                    completionBlock(nil, error);
                else
                {
                    NSArray *friendJSONs = [result objectForKey:@"data"];

                    NSMutableArray *friends=[NSMutableArray array];
                    for(NSDictionary * friendDict in friendJSONs)
                    {
                        SocialProfile *friend=[[SocialProfile alloc] initWithDictionary:friendDict socialMedia:kSocialMediaFacebook];
                        [friends addObject:friend];
                    }
                    completionBlock(friends, nil);
                }
            }];
        }
    }];

                                      }
                                  }];
    return YES;
}

This code works fine if I use my old app Id and secret. I checked the setting in new account and everything is same as I have done in my old account I dont understand what the problem is. Any help is appreciated

解决方案

According to https://developers.facebook.com/docs/apps/changelog Friend list now only returns friends who also use your app: The list of friends returned via the /me/friends endpoint is now limited to the list of friends that have authorized your app.

So I changed my above code to this and it gave me list of friends that use the app and not the whole FB friendlist

FBRequest *friendsRequest = [FBRequest requestForGraphPath:@"/me/friends"];

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